Support the Arctic Sea Ice Forum and Blog

Author Topic: Consequences of using plastics  (Read 50376 times)

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #100 on: February 10, 2022, 11:46:28 AM »
Negotiators from around the world will start work this month on a treaty to reduce plastic pollution, in what diplomats say is the most ambitious round of climate diplomacy since the 2015 Paris agreement that focuses on global warming.

...

Talks are so preliminary that diplomats are still haggling over the issues they will and won’t negotiate. And few expect immediate breakthroughs. But officials say there is a window during President Biden’s current term in office to make a deal that would shake up the realm of plastics with the cooperation of the United States, the world’s biggest producer of plastic waste per person.

As with the Paris agreement, one of the first issues a plastics treaty would address is the basic issue of counting: How much plastic is being manufactured? How much gets recycled? What kinds of chemicals are going into the plastic, and how are they being handled when the plastic is discarded? In much of the world, there aren’t reliable numbers.

https://ieefa.org/talks-to-start-this-month-on-global-plastic-pollution-reduction-treaty/

Early blah stage but it´s something...
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

Alexander555

  • Young ice
  • Posts: 2503
    • View Profile
  • Liked: 185
  • Likes Given: 49
Re: Consequences of using plastics
« Reply #101 on: February 11, 2022, 07:51:40 PM »
We can not even eat our own egg's anymore. They contain to much PFAS/PFOS. Why would it be so bad in egg's ?

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #102 on: February 11, 2022, 08:44:27 PM »
Are you located near the coast?

It probably just concentrates well in the eggs so one is not that bad but if you eat a lot or the normal amount in the diet you will get too much too.
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

Alexander555

  • Young ice
  • Posts: 2503
    • View Profile
  • Liked: 185
  • Likes Given: 49
Re: Consequences of using plastics
« Reply #103 on: February 11, 2022, 08:56:09 PM »
Probably, but let's say that a chicken gives you an egg every 2 days. And that most chickens have a couple square meters of space. She has to find that PFAS in that few square meters. It has to come from somewhere. And to get enough PFAS in 2 days to make the egg risky. It makes me think it's everywhere. At work we have these renewable coffee cups. They are paper with a thin layer of plastic in it. There are 2 signs on it. One that you should not trow it in the water, with a death fish on it. And a second one that shows that you should not touche it after you used it. That thin layer of plastic is probably PFAS. And we use it to drink coffee from.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #104 on: February 12, 2022, 03:03:50 PM »
3M in Antwerp dumped a lot in the environment so if you are near Zwijndrecht it would be everywhere. Alternatively if you are near a airfield where they might have been used a lot the would be another reason to explain it. And yes if the eggs are not safe the ground is not safe.

I think it would be a good time to discuss even using those cups.
Printed receipts are also a source.
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

Alexander555

  • Young ice
  • Posts: 2503
    • View Profile
  • Liked: 185
  • Likes Given: 49
Re: Consequences of using plastics
« Reply #105 on: February 12, 2022, 08:22:25 PM »
I'm located near the dutch border. 20 km from Turnhout, and something like 6 to 7 km from the dutch border. They  advise not to eat egg's in the entire flemish part of Belgium. In this area there are no big cases like with 3M. So probably it's for a part some kind of consumption pollution. It's used in textile, cosmetics, to pack food.... Many things we use a lot.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #106 on: February 16, 2022, 09:05:55 AM »
‘There’s too much plastic on Earth’, a new study warns

Limiting production seems to be the practical solution, the authors say.

The quantity of plastic on our planet has massively exceeded the safe limits for humans and wildlife, says a new study. Although efforts to recycle have increased substantially over the last few decades, they are falling woefully short of solving the issue; the paper suggests placing limits on plastic production as a necessary solution.

The study was penned by the Stockholm Resilience Centre ahead of a UN meeting in Nairobi at the end of the month. This meeting, the Fifth session of the United Nations Environment Assembly, plans to tackle the issue of plastic pollution “from source to sea”, according to a statement by UN Environment Programme head Inger Andersen said on Monday.

There are an estimated 350,000 different manufactured chemicals on the market today, and large quantities of them end up dumped in the environment in one way or another, the study explains.

Recycling has, so far, not been sufficient; less than 10% of the world’s plastic is being recycled currently, while production of these materials has doubled to 367 million tons since 2000.

This has led us to an extreme quantity of plastic piling up on our planet. According to previous research cited by the study, the total weight of plastic on Earth today is four times greater than the biomass of living animals.

...

“Novel entities” — man-made chemical products such as plastics, pesticides, medicine, and non-natural metals — have an impact on the environment. Until now, the team explains, exactly what this impact was remained unclear. This is due to how recent some of them are — most have been developed in the past 70 years — and the fact that data on these materials is often handled as corporate secrets.

Even the most comprehensive databases to date, such as the EU’s REACH inventory, only cover 150,000 of these products; only a third of those have been the subject of detailed toxicity studies, the team adds.

...

https://www.zmescience.com/science/theres-too-much-plastic-on-earth-75445634/

the paper:
https://pubs.acs.org/doi/10.1021/acs.est.1c04158
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #107 on: February 25, 2022, 10:41:33 AM »
Upcycling plastic waste into more valuable materials could make recycling pay for itself

A new and simple method for upcycling plastic waste at room temperature has been developed by a team of researchers at the Centre for Sustainable and Circular Technologies (CSCT) at the University of Bath. The researchers hope the new process will help recycling become more economically viable.

Plastic waste residing in either landfill or the natural environment currently outweighs all living biomass (4 Giga tonnes), culminating in one of the great environmental challenges of the 21st century. Whilst recycling rates are increasing across Europe, traditional methods remain limited because the harsh remelting conditions reduce the quality of the material each time it’s recycled.

Now researchers at the CSCT have developed a mild and rapid chemical recycling process for polycarbonates, a robust class of plastics commonly used in construction and engineering.

Using a zinc-based catalyst and methanol, they were able to completely break down commercial poly(bisphenol A carbonate) (BPA-PC) beads within 20 minutes at room temperature.

The waste can then be converted into its chemical constituents, namely bisphenol A (BPA) and dimethyl carbonate (DMC), helping to preserve product quality over an infinite number of cycles.

Importantly, BPA recovery prevents leakage of a potentially damaging environmental pollutant, whilst DMC is a valuable green solvent and building block for other industrial chemicals.

Their results are published in ChemSusChem, noting enhanced process efficiency and milder conditions compared to previous methods.

Promisingly, the catalyst is also tolerant to other commercial sources of BPA-PC (e.g. CD) and mixed waste feeds, increasing industrial relevance, whilst being amenable to other plastics (e.g. poly(lactic acid) (PLA) and poly(ethylene terephthalate) (PET)) at higher temperatures.

...

First author of the paper, Jack Payne from the CSCT, said: “Whilst plastics will play a key role in achieving a low-carbon future, current practices are unsustainable.

“Moving forward, it’s imperative we source plastics from renewable feedstocks, embed biodegradability/recyclability at the design phase and diversify existing waste management strategies.

“Such future innovation should not be limited to emerging materials but encompass established products too.

“Our method creates new opportunities for polycarbonate recycling under mild conditions, helping to promote a circular economy approach and keep carbon in the loop indefinitely.”

...

https://www.eurekalert.org/news-releases/944444
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

Sigmetnow

  • Multi-year ice
  • Posts: 26266
    • View Profile
  • Liked: 1167
  • Likes Given: 436
Re: Consequences of using plastics
« Reply #108 on: March 03, 2022, 12:43:37 AM »
U.N. adopts historic resolution aimed at ending plastic pollution
The measure at the United Nations lays out plan for developing a legally binding treaty by the end of 2024
Quote
For the first time, the international community has agreed on a framework to curb the world’s growing plastic problem. A resolution adopted Wednesday by the United Nations lays out an ambitious plan for developing a legally binding treaty to “end plastic pollution.”

“With plastic pollution getting worse every day, there is no time to waste,” said Rwandan Environment Minister Jeanne d’Arc Mujawamariya. “This decision is a historic milestone in the global effort to prevent our planet from drowning in plastics.”

Wednesday’s resolution came on the third day of the biennial U.N. Environment Assembly in Nairobi, where more than 150 countries are represented. It calls for the creation of an intergovernmental negotiating committee to hash out details of a treaty by the end of 2024.

The committee’s mandate includes all phases of the plastic life cycle — from design and production to waste management. It comes at a time when the world produces billions of pounds of plastic waste annually — about 353 million tons in 2019, according to a recent report from the Organization for Economic Cooperation and Development, and amid mounting scientific concerns about issues such as marine plastic debris and the potential impact of microplastics.

Environmental activists and industry representatives alike welcomed the agreement. “It has all the critical components we thought were necessary at this stage in the process,” said Erin Simon, the head of plastic waste and business at the World Wildlife Fund. In a statement, the International Council of Chemical Associations, a trade association, wrote, “We commend the governments that spent long days finding common ground to develop a meaningful resolution to address plastic pollution.”

The U.N. resolution was years in the making, said David Azoulay, a lawyer at the Center for International Environmental Law. He says he remembers the idea first surfacing at the 2016 iteration of the U.N. Environment Assembly in the context of marine plastic. “Envisioning a treaty was unthinkable,” Azoulay said. But, he added, Wednesday’s resolution has gone even beyond that early focus.

“The issue is not just plastic in the ocean; the issue is plastic pollution throughout its life cycle,” Azoulay said. “There is very little in there that I wish wasn’t in there. Everything we need to have the conversations that will lead to a good treaty is in there.”

Azoulay was glad that among the achievements in the resolution, its final version specifically charged the negotiating committee with looking at plastic production, included the option for a dedicated fund to help finance the treaty and mentioned human health impacts of plastic pollution.

“There were efforts to weaken the language on health that failed,” said Bjorn Beeler, the international coordinator at the International Pollutants Elimination Network, an advocacy and research group. Although he said he would have liked a more explicit mention of the chemical additives in plastics, that language was “negotiated out.” An aspect about which Simon is excited is the call for national action plans from each participating country. More harmonized and standard data is “critical,” she said but acknowledged that “the proof is in the action we take from here on out.”

Getting from resolution to treaty will not be easy. “The fact that they are headed toward binding rules I take as a very good sign,” said Steven Blackledge, who runs the conservation program at the nonprofit group Environment America. “The devil is in the details.”

“The million-dollar question is how much we’ll talk about reducing the production of virgin plastic,” Azoulay said.
That topic is likely to prove contentious. …
https://www.washingtonpost.com/climate-solutions/2022/03/02/un-adopts-historic-resolution-aimed-ending-plastic-pollution/
People who say it cannot be done should not interrupt those who are doing it.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #109 on: March 24, 2022, 11:08:08 PM »
Microplastics found in human blood for first time in ‘extremely concerning’ study

The world’s first study to look for the presence of plastics in human blood detected particles in 77 per cent of those tested, new research has found.

...

Dick Vethaak, professor of ecotoxicology and water quality and health at the Vrije Universiteit Amsterdam in the Netherlands, told The Independent the findings were “certainly alarming because it shows that people apparently ingest or inhale so much plastic that it can be found in the bloodstream”.

“Such particles can cause chronic inflammation,” he added.

The research team tested the blood of 22 people for five types of plastic. These were polymethyl methacrylate (PMMA), polypropylene (PP), polystyrene (PS), polyethylene (PE), and polyethylene terephthalate (PET).

Some 17 of the 22 blood donors carried a quantifiable mass of plastic particles in their blood, the results found.

After PET, polystyrene, which is used to make a wide variety of household products, was the most commonly found plastic in the blood samples tested.

The third most widely found plastic in blood was polyethylene, a material regularly used in the production of plastic carrier bags.

Up to three different types of plastic in a single blood sample were measured, the scientists said.

PET was found in the bloodstream of 50 per cent of those tested, while polystyrene was present in 36 per cent.

...

https://www.independent.co.uk/climate-change/news/microplastics-human-blood-pollution-environment-b2043133.html
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

etienne

  • Nilas ice
  • Posts: 2091
    • View Profile
    • About energy
  • Liked: 311
  • Likes Given: 23
Re: Consequences of using plastics
« Reply #110 on: March 25, 2022, 09:55:51 PM »
It's a little bit out of topic, but because of supply issues, companies start to reduce plastic dependency. For the first time in years, there was a special offer for my wife's favorite cola in glass bottles.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #111 on: March 28, 2022, 11:56:06 PM »
Harmful PFAS Chemicals Found in Food Wrappers at Major Fast-Food Restaurants and Grocery Stores


Recent Consumer Reports tests of more than 100 food packaging products from U.S. restaurants and supermarkets found dangerous PFAS chemicals in many of the products, including paper bags for french fries, wrappers for hamburgers, molded fiber salad bowls, and single-use paper plates.

Previous CR tests found PFAS—per- and polyfluoroalkyl substances—in drinking water and bottled water.

That’s concerning, as growing research documents that PFAS, which are added to many materials to make them resistant to grease, water, and stains, have led to environmental contamination around the globe and raised questions about their health risks when they accumulate in our bodies.

How Humans Are Exposed to PFAS


One of the main concerns about PFAS is how long they last. In fact, they are often called “forever chemicals” because they break down extremely slowly, if ever.

That persistence, combined with the many products that now contain PFAS, means that there are many ways the chemicals can enter the environment and eventually reach humans, too.   

Consider, for example, the production of food packaging with PFAS coating. In Maine, wastewater sludge from mills where such products are produced has reportedly been used to fertilize fields where cattle graze. In 2020, the Maine Department of Agriculture, Conservation and Forestry tested milk from dairy farms and found levels of one particular PFAS in a sample from a farm that were more than 150 times higher than state regulations permit.

When food packaging contains PFAS, some of those chemicals can migrate into food. Other products, like stain-resistant carpets, can leave PFAS in household dust and air.

And finally, once food packaging or other products containing PFAS are thrown away, PFAS can leach out from landfills or spread from incinerators into the environment, where they can contaminate soil, food, water, and air—just like they can when they are first produced.

https://www.technologynetworks.com/analysis/news/harmful-pfas-chemicals-found-in-food-wrappers-at-major-fast-food-restaurants-and-grocery-stores-360029
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #112 on: April 07, 2022, 11:30:16 AM »
Microplastics Have Now Been Found in The Deepest Part of The Human Lungs

The term 'microplastic' was coined just 18 years ago, but already they seem to be just about everywhere.

Each year, the average human consumes an estimated 74,000 particles of plastic with unknown health effects. In March of this year, scientists announced they'd found microplastics flowing through our very veins.

Turns out, they're also circulating at low levels deep in our lungs.

The most robust study of its kind has discovered 39 microplastic particles (each at least three micrometers in size) in 11 out of 13 lung tissue samples from living humans.

Previous studies on cadavers and lung cancer samples have uncovered tiny fibers and flakes of plastics before, but none analyzed the makeup of the synthetic polymers.

Of the types of microplastic detected in this latest study, a dozen polymer types showed up the most. These included polyethylene, which is found in plastic bags and packaging, resin from paints, roads, and tires, and nylon from clothing.

While these microplastics were only found in small amounts, they were present throughout the lungs, and the lower the lung tissue, the more contamination there generally was.

This deep in the lungs, the plastic particles were unexpectedly large.

"This is surprising as the airways are smaller in the lower parts of the lungs, and we would have expected particles of these sizes to be filtered out or trapped before getting this deep into the lungs," explains respiratory specialist Laura Sadofsky from Hull York Medical School in the UK.

For decades it's been thought that only particles with a physical diameter below 3 μm can enter the alveolar region of the lung. Today, in the scientific literature, the alveolar duct is said to have a diameter of about 540 μm and a length of 1,410 μm.

But the current study found particles ranging up to 2,475 μm in length and up to 88 μm in width, which they note is "too large to be present, yet present nonetheless".

The findings suggest that inhalation is a regular route of microplastic exposure for humans, and that we may be breathing larger particles than experts assumed.

Apart from that, we know very little. It's unclear, for instance, what low levels of microplastics in our lungs are actually doing to human health, if anything at all.

"This data provides an important advance in the field of air pollution, microplastics and human health," says Sadofsky.

"The characterization of types and levels of microplastics we have found can now inform realistic conditions for laboratory exposure experiments with the aim of determining health impacts."

The study was published in Science of the Total Environment.

https://www.sciencealert.com/microplastics-are-not-just-in-our-blood-they-re-in-our-lungs-too
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

be cause

  • Nilas ice
  • Posts: 2462
    • View Profile
  • Liked: 1022
  • Likes Given: 1063
There is no death , the Son of God is We .

Tor Bejnar

  • Young ice
  • Posts: 4606
    • View Profile
  • Liked: 879
  • Likes Given: 826
Re: Consequences of using plastics
« Reply #114 on: April 07, 2022, 11:08:28 PM »
Driving home this afternoon, we watched an empty plastic bag drifting over the cars in front of us.  A song immediately came to mind: the relevant line being, "The answer my friend, is blowing in the wind."  Some answers make you cry.  :'(
« Last Edit: April 07, 2022, 11:27:57 PM by kassy »
Arctic ice is healthy for children and other living things because "we cannot negotiate with the melting point of ice"

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #115 on: April 07, 2022, 11:30:59 PM »
We have a separate music thread you can put music videos in. There is also so much you don´t even see blowing around and that is probably a Kansas video but again The Rest/Music.
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

morganism

  • Nilas ice
  • Posts: 2031
    • View Profile
  • Liked: 235
  • Likes Given: 143
Re: Consequences of using plastics
« Reply #116 on: April 10, 2022, 08:30:55 PM »
Treated plastic waste good at grabbing carbon dioxide

" "Point sources of CO2 emissions like power plant exhaust stacks can be fitted with this waste-plastic-derived material to remove enormous amounts of CO2 that would normally fill the atmosphere," Tour said. "It is a great way to have one problem, plastic waste, address another problem, CO2 emissions."

A current process to pyrolyze plastic known as chemical recycling produces oils, gases and waxes, but the carbon byproduct is nearly useless, he said. However, pyrolyzing plastic in the presence of potassium acetate produces porous particles able to hold up to 18% of their own weight in CO2 at room temperature.

In addition, while typical chemical recycling doesn't work for polymer wastes with low fixed carbon content in order to generate CO2 sorbent, including polypropylene and high- and low-density polyethylene, the main constituents in municipal waste, those plastics work especially well for capturing CO2 when treated with potassium acetate.

The lab estimates the cost of carbon dioxide capture from a point source like post-combustion flue gas would be $21 a ton, far less expensive than the energy-intensive, amine-based process in common use to pull carbon dioxide from natural gas feeds, which costs $80-$160 a ton.

Like amine-based materials, the sorbent can be reused. Heating it to about 75 degrees Celsius (167 degrees Fahrenheit) releases trapped carbon dioxide from the pores, regenerating about 90% of the material's binding sites."

https://www.spacedaily.com/reports/Treated_plastic_waste_good_at_grabbing_carbon_dioxide_999.html

Plastic Waste Product Captures Carbon Dioxide in Nanometer Pores

https://pubs.acs.org/doi/10.1021/acsnano.2c00955

vox_mundi

  • Multi-year ice
  • Posts: 10466
    • View Profile
  • Liked: 3536
  • Likes Given: 762
Re: Consequences of using plastics
« Reply #117 on: April 29, 2022, 06:56:43 AM »
California Is Investigating Big Oil for Allegedly Misleading the Public On Plastic  Recycling
https://www.npr.org/2022/04/28/1095305949/california-is-investigating-big-oil-for-allegedly-misleading-the-public-on-recyc

Accusing the country's largest oil and gas companies of "a half-century campaign of deception," California's attorney general opened an investigation Thursday into the possible role the companies played promoting the idea that plastics could be recycled, in an effort to manipulate the public to buy more of it.

Attorney General Rob Bonta said the fossil fuel industry benefited financially from the industry's misleading statements which he said go back decades. Bonta has so far subpoenaed ExxonMobil seeking information and documents.

Quote
... "For more than half a century, the plastics industry has engaged in an aggressive campaign to deceive the public, perpetuating a myth that recycling can solve the plastics crisis," ... "The truth is: The vast majority of plastic cannot be recycled."

The announcement cited NPR and the PBS series Frontline's 2020 investigation into the oil and gas industry which uncovered documents showing top officials knew that recycling plastic was unlikely to work but spent tens of millions of dollars telling the public the opposite.

https://www.npr.org/2020/09/11/897692090/how-big-oil-misled-the-public-into-believing-plastic-would-be-recycled

Starting in the 1980s, the industry launched dozens of ads, nonprofits, and campaigns touting the benefits of recycling plastic – and placing the responsibility on consumers – even as their own documents warned that recycling was "infeasible" and that there was "serious doubt" that plastic recycling "can ever be made viable on an economic basis," the investigation found.

... Industry officials have told NPR in the past that the industry has never misled the public and believes it can make plastic recycling work, though they were not able to specify how. In 40 years, no more than 10 percent of all plastic has ever been recycled.

At a press conference, Bonta said his office's preliminary findings have provided them with enough information to proceed with an investigation.

"We are not prejudging this, but there is information, significant amounts of it, that is compelling and in the public sphere that has led us to a good faith belief that we should be subpoenaing ExxonMobil to get more information," Bonta said. "There is a broad belief that plastics are recyclable. That has been the result of the misinformation campaign, of the deception, that consumers have been manipulated to believe that plastic is recyclable. It was a strategy as far as we can tell."

Officials say the investigation also hopes to determine whether any deception is still ongoing. Critics of the oil industry have raised concerns about the industry's current $1.5 billion effort, which launched in 2019 under the banner "The Alliance to End Plastic Waste" and is made up of the country's largest oil and plastic producers. Through glossy ads and small demonstration projects, the group promotes plastic recycling and clean up efforts rather than using less plastic.

Bonta said his office is eager to move quickly with the investigation and get hold of the documents they are looking for.

-------------------------------------------



--------------------------------------------

How Big Oil Misled The Public Into Believing Plastic Would Be Recycled
https://www.npr.org/2020/09/11/897692090/how-big-oil-misled-the-public-into-believing-plastic-would-be-recycled

NPR and PBS Frontline spent months digging into internal industry documents and interviewing top former officials. We found that the industry sold the public on an idea it knew wouldn't work — that the majority of plastic could be, and would be, recycled — all while making billions of dollars selling the world new plastic.

The industry's awareness that recycling wouldn't keep plastic out of landfills and the environment dates to the program's earliest days, we found. "There is serious doubt that [recycling plastic] can ever be made viable on an economic basis," one industry insider wrote in a 1974 speech.

Yet the industry spent millions telling people to recycle, because, as one former top industry insider told NPR, selling recycling sold plastic, even if it wasn't true.

"If the public thinks that recycling is working, then they are not going to be as concerned about the environment," Larry Thomas, former president of the Society of the Plastics Industry, known today as the Plastics Industry Association and one of the industry's most powerful trade groups in Washington, D.C., told NPR.

... It may have sounded like an environmentalist's message, but the ads were paid for by the plastics industry, made up of companies like Exxon, Chevron, Dow, DuPont and their lobbying and trade organizations in Washington.

Industry companies spent tens of millions of dollars on these ads and ran them for years, promoting the benefits of a product that, for the most part, was buried, was burned or, in some cases, wound up in the ocean.

Documents show industry officials knew this reality about recycling plastic as far back as the 1970s.

... At Syracuse University, there are boxes of files from a former industry consultant. And inside one of them is a report written in April 1973 by scientists tasked with forecasting possible issues for top industry executives.

Recycling plastic, it told the executives, was unlikely to happen on a broad scale.

"There is no recovery from obsolete products," it says.

It says pointedly: Plastic degrades with each turnover.

"A degradation of resin properties and performance occurs during the initial fabrication, through aging, and in any reclamation process," the report told executives.

Recycling plastic is "costly," it says, and sorting it, the report concludes, is "infeasible."

And there are more documents, echoing decades of this knowledge, including one analysis from a top official at the industry's most powerful trade group. "The costs of separating plastics ... are high," he tells colleagues, before noting that the cost of using oil to make plastic is so low that recycling plastic waste "can't yet be justified economically."

... NPR tracked down almost a dozen projects the industry publicized starting in 1989. All of them shuttered or failed by the mid-1990s. Mobil's Massachusetts recycling facility lasted three years, for example. Amoco's project to recycle plastic in New York schools lasted two. Dow and Huntsman's highly publicized plan to recycle plastic in national parks made it to seven out of 419 parks before the companies cut funding.

None of them was able to get past the economics: Making new plastic out of oil is cheaper and easier than making it out of plastic trash.

Both Freeman and Thomas, the head of the lobbying group, say the executives all knew that. ... "They knew that the infrastructure wasn't there to really have recycling amount to a whole lot."

... Lobbying group in D.C. knew the truth in Smith's community too. A report given to top officials at the Society of the Plastics Industry in 1993 told them about the problems.

"The [recycling] code is being misused," it says bluntly. "Companies are using it as a 'green' marketing tool."

The code is creating "unrealistic expectations" about how much plastic can actually be recycled, it told them.

... "It's pure manipulation of the consumer," ... Analysts now expect plastic production to triple by 2050.

------------------------------------------------

Plastics Industry Insiders Reveal the Truth About Recycling
https://www.pbs.org/wgbh/frontline/article/plastics-industry-insiders-reveal-the-truth-about-recycling/

« Last Edit: April 29, 2022, 07:21:39 AM by vox_mundi »
There are 3 classes of people: those who see. Those who see when they are shown. Those who do not see

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

Fiat iustitia, et pereat mundus

John Batteen

  • Frazil ice
  • Posts: 228
    • View Profile
  • Liked: 60
  • Likes Given: 3
Re: Consequences of using plastics
« Reply #118 on: April 30, 2022, 08:50:07 PM »
So what actually happens to the plastic we send to the recycling center?

vox_mundi

  • Multi-year ice
  • Posts: 10466
    • View Profile
  • Liked: 3536
  • Likes Given: 762
Re: Consequences of using plastics
« Reply #119 on: April 30, 2022, 09:38:21 PM »
Burned or buried (or lost to the oceans). Maybe less than 10% is recycled. ...

https://www.npr.org/2020/09/11/897692090/how-big-oil-misled-the-public-into-believing-plastic-would-be-recycled

Laura Leebrick, a manager at Rogue Disposal & Recycling in southern Oregon, is standing on the end of its landfill watching an avalanche of plastic trash pour out of a semitrailer: containers, bags, packaging, strawberry containers, yogurt cups.

None of this plastic will be turned into new plastic things. All of it is buried.

"To me that felt like it was a betrayal of the public trust," she said. "I had been lying to people ... unwittingly."

Rogue, like most recycling companies, had been sending plastic trash to China, but when China shut its doors two years ago, Leebrick scoured the U.S. for buyers. She could find only someone who wanted white milk jugs. She sends the soda bottles to the state.

But when Leebrick tried to tell people the truth about burying all the other plastic, she says people didn't want to hear it.

"I remember the first meeting where I actually told a city council that it was costing more to recycle than it was to dispose of the same material as garbage," she says, "and it was like heresy had been spoken in the room: You're lying. This is gold. We take the time to clean it, take the labels off, separate it and put it here. It's gold. This is valuable."

But it's not valuable, and it never has been. And what's more, the makers of plastic — the nation's largest oil and gas companies — have known this all along, even as they spent millions of dollars telling the American public the opposite.
There are 3 classes of people: those who see. Those who see when they are shown. Those who do not see

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

Fiat iustitia, et pereat mundus

be cause

  • Nilas ice
  • Posts: 2462
    • View Profile
  • Liked: 1022
  • Likes Given: 1063
There is no death , the Son of God is We .

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #121 on: May 01, 2022, 03:40:36 PM »
It only helps with a part of the problem although it can be used for the not so recyclable plastics we also use.

We just need to make less crap overall to really solve this.

Scientists call for cap on production to end plastic pollution
https://www.sciencedaily.com/releases/2022/04/220428142653.htm

Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

be cause

  • Nilas ice
  • Posts: 2462
    • View Profile
  • Liked: 1022
  • Likes Given: 1063
Re: Consequences of using plastics
« Reply #122 on: May 02, 2022, 04:19:40 PM »
I recall one of d'trump's first promises was to double plastic production in the US .. did he succeed ?
There is no death , the Son of God is We .

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #123 on: May 11, 2022, 11:35:03 AM »
Micro- and nanoplastic from the atmosphere is polluting the ocean

According to estimates, by 2040 the level of plastic pollution could reach 80 million metric tons per year. Plastic particles have now been detected in virtually all spheres of the environment, e.g. in water bodies, the soil and the air. Via ocean currents and rivers, the tiny plastic particles can even reach the Arctic, Antarctic or ocean depths. A new overview study has now shown that wind, too, can transport these particles great distances -- and much faster than water can: in the atmosphere, they can travel from their point of origin to the most remote corners of the planet in a matter of days. In the journal Nature Reviews Earth and Environment, an international team of researchers -- including experts from the Alfred Wegener Institute, the Institute for Advanced Sustainability Studies in Potsdam, and the GEOMAR Helmholtz Centre for Ocean Research in Kiel -- describes how microplastic finds its way into the atmosphere and how it is subsequently transported.

Today, between 0.013 and 25 million metric tons of micro- and nanoplastic per year are transported up to thousands of kilometres by ocean air, snow, sea spray and fog, crossing countries, continents and oceans in the process. This estimate was arrived at by an international team of 33 researchers, including experts from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), the Institute for Advanced Sustainability Studies in Potsdam (IASS) and the GEOMAR Helmholtz Centre for Ocean Research in Kiel.

"Air is a much more dynamic medium than water," says co-author Dr Melanie Bergmann from the AWI. "As a result, micro- and nanoplastic can much more quickly penetrate those regions of our planet that are most remote and still largely untouched." Once there, the particles could affect the surface climate and the health of local ecosystems. For example, when these darker particles are deposited on snow and ice, they affect the ice-albedo feedback, reducing their ability to reflect sunlight and promoting melting. Similarly, darker patches of seawater absorb more solar energy, further warming the ocean. And in the atmosphere, microplastic particles can serve as condensation nuclei for water vapour, producing effects on cloud formation and, in the long term, the climate.

more on:
https://www.sciencedaily.com/releases/2022/05/220510102934.htm
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

morganism

  • Nilas ice
  • Posts: 2031
    • View Profile
  • Liked: 235
  • Likes Given: 143
Re: Consequences of using plastics
« Reply #124 on: May 19, 2022, 08:19:42 PM »
More than 3,000 potentially harmful chemicals found in food packaging

"Scientists have identified more than 3,000 potentially harmful chemicals that can be found in food packaging and other food-related materials, two-thirds of which were not previously known to be in contact with food.

An international group of scientists analyzed more than 1,200 scientific studies where chemicals had been measured in food packaging, processing equipment, tableware and reusable food containers.

A report released on Thursday by the Food Packaging Forum, a Switzerland-based non-profit, noted little is known about many of the 3,240 chemicals examined in these studies or their effects on people.

Manufacturers are either intentionally or unintentionally adding these chemicals to packaging and other equipment, said Pete Myers, a report co-author and founder and chief scientist of Environmental Health Sciences, a non-profit advocacy group. Either way, many of those chemicals are ending up in the human body, he said.

“If we don’t know what it is, we don’t know its toxicity,” Myers said. “The mix of chemicals is just too complicated to allow us to regulate them safely.”

The new analysis, published in the journal Critical Reviews in Food Science and Nutrition, comes amid growing concerns about exposure to potentially toxic chemicals in food and water.

The Food Packaging Forum has created a searchable database with the chemicals found in the packaging and equipment, known as food contact materials. While many of the chemicals on the list are known hazards such as phthalates and PFAS, others have not been adequately studied, the group said, and their health effects are unclear."

https://www.theguardian.com/world/2022/may/19/more-than-3000-potentially-harmful-chemicals-food-packaging-report-shows

https://www.tandfonline.com/doi/full/10.1080/10408398.2022.2067828

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #125 on: May 20, 2022, 09:34:17 AM »
How plastic is fuelling a hidden climate crisis in Southeast Asia

From production to disposal, plastic emits a lot of greenhouse gas, and may even be interfering with the ocean’s ability to absorb carbon

...

From its production to consumption and disposal, plastic is one of the planet’s most carbon-intensive industries. Scientists have found its carbon footprint has doubled in less than 30 years, now accounting for nearly 5% of total annual greenhouse gas emissions. If plastics were a country, they would be the fifth largest emitter in the world. Yet petrochemicals, the refined oil and gas products that plastic production relies on, have been labelled an “energy blind spot” – a sector that policymakers consistently neglect in the drive towards decarbonisation.

For the countries of Southeast Asia, plastic is becoming an ever thornier issue, as the region confronts a growing tide of waste from home and abroad that threatens its environment and, as it degrades or is incinerated, even the global climate.

...

Take Indonesia, which relies on coal for 60% of its electricity production. There a growth in plastic production has exacerbated carbon emissions and particulate matter pollution from coal burning. The country’s coal-mining activities for plastics production specifically have boomed since 1995, with researchers noting a 300-fold increase by 2015. As a result, they calculate that more than one-tenth of Indonesia’s total emissions can be attributed to the plastics industry.

...

Hoang Hai, a researcher at the University of Da Nang in Vietnam, surveyed 307 households in the city of Da Nang as part of a research project in collaboration with the Norwegian Institute for Water Research (NIVA). Their study demonstrates the use of disposable plastics is ubiquitous, and dramatically increasing in the country due to the growth of app-based food and drink delivery services. The surveyed households chose home delivery due to its convenience, in terms of avoiding cooking and washing up. But, these options exacerbate the plastic waste problem. “This lifestyle will generate [per person] hundreds of plastic bags, cups, boxes, and straws to be disposed of,” Hoang tells China Dialogue.

Hernandez points out that companies are starting to take notice of the issue. Nestlé, which generates nearly 2 million tonnes of plastic waste annually and has been identified as one of the major players responsible for a high share of imported plastic waste in Southeast Asia, has set a net-zero greenhouse gas emissions target by 2050. A company spokesperson told China Dialogue that this will include both direct and indirect emissions, the majority of which come from agriculture, packaging and product distribution.

...

https://chinadialogueocean.net/en/pollution/how-plastic-is-fuelling-a-hidden-climate-crisis-in-southeast-asia/
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #126 on: May 23, 2022, 08:30:52 PM »
Monitoring the journey of microplastics through the intestine of a living organism

A UAB research team has managed to track the movement of microplastics during their journey through the intestinal tract of a living organism and illustrate what happens along the way. The study, carried out on Drosophila melanogaster using electron microscopy equipment developed by the researchers themselves, represents a significant step towards a more precise analysis of the health risks of being exposed to these pollutants.
....

Effects at the nanometric level

The evaluation of the biological effects at different stages of the larvae's life showed that, although no significant toxicity was observed, the exposure produced a broad molecular response, altering the expression of genes involved in the general response to stress, oxidative damage and genotoxicity, as well as in genes related to the response to physical damage on the intestinal barrier.

https://phys.org/news/2022-05-journey-microplastics-intestine.html
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #127 on: May 30, 2022, 05:14:39 PM »
Harmful bacteria survives longer on plastic Scottish beach waste

Bacteria on wet wipes and cotton buds washed up on Scottish beaches can survive long enough to pose a risk to human health, researchers have found.

A Stirling University team found "concentrated reservoirs" of faecal bacteria on plastic waste on 10 beaches along the Firth of Forth estuary.

It found that bacteria such as E. coli were binding to the plastic more often than natural material like seaweed.

The team said the volume of waste discovered was "shocking".

Prof Richard Quilliam, who led the team, said: "We expected to collect a few wet wipes everywhere, but the team came back with bags of them."

...

The team found evidence that species of vibrio, a naturally-occurring bacteria, some strains of which can cause a severe upset stomach, were able to colonise wet wipes.

They also found high rates of resistance to antibiotics present in the bacteria on the wipes and cotton bud sticks.

https://www.bbc.com/news/uk-scotland-tayside-central-61594833
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #128 on: June 09, 2022, 08:16:22 PM »
Microplastics found in fresh Antarctic snow

Scientists have for the first time found microplastics in freshly fallen Antarctic snow.

Researchers from the University of Canterbury in New Zealand collected samples from 19 sites in Antarctica and each contained tiny plastic fragments.

Microplastics stem from the erosion of plastic materials and are smaller than a grain of rice - sometimes even invisible to the naked eye.

The researchers found an average of 29 particles per litre of melted snow.

They identified 13 different types of plastics and the most common was polyethylene terephthalate (PET), mostly used in soft-drink bottles and clothing. This was found in 79% of the samples.

Where did they come from?
"The most likely source of these airborne microplastics is local scientific research stations," researcher Alex Aves wrote in the journal, Cryosphere.

"However, modelling shows their origin could have been up to 6,000km (3,700 miles) away."

...

https://www.bbc.com/news/science-environment-61739159
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #129 on: July 01, 2022, 03:51:04 PM »
New study reveals impact of plastic on small mammals, as four out of seven species identified as ‘plastic positive’

Researchers investigating the exposure of small mammals to plastics in England and Wales have found traces in the feces of more than half of the species examined

Researchers investigating the exposure of small mammals to plastics in England and Wales have found traces in the faeces of more than half of the species examined.

In a paper published in Science of the Total Environment, researchers from the University of Sussex, the Mammal Society and the University of Exeter state that the densities of plastic excreted were comparable with those reported in human studies.

Fiona Mathews, Professor of Environmental Biology at the University of Sussex, says:

‘Much is known about the impact of plastic on aquatic ecosystems, but very little is known about the same with terrestrial systems.

‘By analysing the droppings of some of our most widespread small mammals, we’ve been able to provide a glimpse of the potential impact plastic is having on our wildlife - and the most commonly found plastics leaking into our environment.’

The paper, authored by graduate Emily Thrift, Prof Fiona Mathews and Dr Frazer Coomber of the University of Sussex and the Mammal Society, with Dr Adam Porter and Prof Tamara Galloway of the University of Exeter, identifies plastic polymers in four out of the seven species for which they had faecal samples for. The European hedgehog, wood mouse, field vole and brown rat were all found to be plastic positive.

While expecting to see higher plastic concentrations in samples from urban locations and less plastic in herbivorous species, researchers actually discovered that ingestion of plastics were occurring across locations as well as across differing dietary habits – from herbivores, insectivores and omnivores.

‘It’s very worrying that the traces of plastic were so widely distributed across locations and species of different dietary habits. This suggests that plastics could be seeping into all areas of our environment in different ways.

‘We’re also concerned that the European hedgehog, and field vole are both species suffering declines in numbers in the UK.’

Using equipment at the Greenpeace labs at the University of Exeter, the team analysed 261 faecal samples, with 16.5% containing plastic. The most common types identified were polyester, polyethylene (widely used in single-use packaging), and polynorbornene (used mainly in the rubber industry). Polyester accounted for 27% of the fragments identified, and was found in all the plastic positive species, except the wood mouse. Widely used in textiles and the fashion industry, the paper explains that microfibres can enter the waste water system through household washing and subsequently end up on the land through the use of sewage sludge as fertiliser.

Over a quarter of the plastics found in the study were also ‘biodegradable’ or bioplastics. The authors warn that while these types of plastics may degrade faster than polymers, they can still be ingested by small mammals and further research is needed to investigate their true biological impacts.   

...

https://www.eurekalert.org/news-releases/957639
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #130 on: July 01, 2022, 03:54:22 PM »
Large Quantities of Biodegradable Plastics Found in Fertilizers From Composting Plants

Composting plants process biowaste into finished compost, which ends up as fertiliser in the soils of fields and gardens. A study by the University of Bayreuth shows that finished compost from composting plants in Germany contains a large number of biodegradable plastic particles. Applicable legal and certification standards are not violated by the sizes and quantities of the particles detected. However, the data published in "Scientific Reports" call into question the contribution of these standards to effective environmental protection. They draw into question whether biodegradable plastics are suitable for replacing conventional plastics in environmentally and nutritionally sensitive areas.

The new study is the result of close interdisciplinary cooperation in the SFB 1357 "Microplastics" Collaborative Research Centre at the University of Bayreuth. The Ministry for the Environment, Climate Protection and the Energy Sector of the State of Baden-Württemberg funded the research work. This is the first scientific study to systematically examine commercially available compost for biodegradable plastic particles. The Bayreuth scientists worked together with four municipal biowaste recycling plants in Baden-Württemberg. These plants use established technical procedures to process biowaste in a two-stage process, the microbial production of biogas being followed by the conversion of the organic residual material into high-quality compost.   

In the finished compost from the four plants, the Bayreuth researchers discovered a significant number of biodegradable microplastic particles that have a size of less than one millimetre. Together, these particles make up 0.43 percent of the compost's dry weight. The German Fertiliser Ordinance (DüMV) does require that the proportion of biodegradable plastic in high-quality compost be a maximum of only 0.1 per cent of the dry weight. However, this limit refers only to microplastic particles larger than two millimetres.

"The legally defined limit value for the proportion of biodegradable microplastics should in future also include much smaller particles in order to significantly reduce the pollution of agricultural land. This seems particularly necessary because finished compost contains a very large number of particles smaller than two millimetres.

and more:
https://www.technologynetworks.com/analysis/news/large-quantities-of-biodegradable-plastics-found-in-fertilizers-from-composting-plants-363166

It is probably a bit too late to regulate the small particles...
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

El Cid

  • Young ice
  • Posts: 2544
    • View Profile
  • Liked: 935
  • Likes Given: 227
Re: Consequences of using plastics
« Reply #131 on: July 01, 2022, 09:24:38 PM »
People here collect grass cuttings and leaves into so called biodegradable plastic bags which gets taken by the city to the central composting facility and is turned into compost. However, biodegradable plastic is a scam. People think that it is somehow environment friendly when in reality these are normal plastic bags but enhanced so that they break down quickly into small bits and pieces, in effect microplastics. And then that gets into the compost. And into your food. Splendid.

I have always hated this. Good that some realize how stupid it is. All these things could be collected in paper bags. Which are in fact biodegradable...

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #132 on: July 02, 2022, 08:22:11 AM »
Or collected in a different way. We have green containers for these materials which get picked up weekly. They are plastic but hard plastics so they don´t degrade but you don´t need any bags.

In theory we can almost stop making new plastics:

Pioneering recycling turns mixed waste into premium plastics with no climate impact

Only a fraction of the material that could be turned into new plastic is currently recycled. Researchers at Chalmers University of Technology in Sweden have now demonstrated how the carbon atoms in mixed waste can replace all fossil raw materials in the production of new plastic. The recycling method is inspired by the natural carbon cycle and could eliminate the climate impact of plastic materials, or even clean the air of carbon dioxide.

"There are enough carbon atoms in waste to meet the needs of all global plastic production. Using these atoms, we can decouple new plastic products from the supply of virgin fossil raw materials. If the process is powered by renewable energy, we also get plastic products with more than 95% lower climate impact than those produced today, which effectively means negative emissions for the entire system," says Henrik Thunman, Professor of Energy Technology at Chalmers University of Technology and one of the authors of the study published in the Journal of Cleaner Production.

To achieve circular cycles, we need to make better use of the resources already in use in society. Henrik Thunman and his research team want to focus on an important resource that often goes up in smoke today: the carbon atoms in our waste, which are currently incinerated or end up in landfills instead of being recycled. This is made possible with technologies targeting the carbon contained in plastic, paper and wood wastes, with or without food residues, to create a raw material for the production of plastics with the same variety and quality as those currently produced from fossil raw materials.

....

https://www.sciencedaily.com/releases/2022/06/220630083309.htm
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #133 on: July 02, 2022, 09:04:55 AM »
India imposes nationwide ban on many single-use plastics but huge challenges remain

India has implemented a ban on single-use or disposable plastic products from yesterday, despite pressure from manufacturers to defer the measure as the nation of 1.4 billion aims to phase out the material altogether.

Plastic cups, straws, and some disposable plastic bags are among 19 single-use plastic items that are now illegal to produce, import, stock, distribute or sell.

Violating the ban is punishable with a fine or even a jail term, the federal environment ministry said.

But doubts remain over the chances of the ban proving effective, as small businesses struggle to find viable alternatives to the plastic products. Popular items such as drinks bottles and crisp packets, which frequently become litter, are exempt from the ban – a major problem in a country where rubbish is a common sight.

...

“Given the magnitude of the plastic crisis, this is too little. And it’s too little both in its scope as well as the coverage,” said Satyarupa Shekhar, the Asia-Pacific coordinator for advocacy group Break Free from Plastic.

Dharmesh Shah, an adviser with environmental advocacy group Legal Initiatives for Forest and Environment (LIFE), told The Independent that while this is definitely a step in the right direction, it’s still a “wait and watch game”, as actual enforcement depends on the municipal bodies of individual states and cities.

..

Earlier this year, India’s National Green Tribunal (NGT) – a government agency that handles environment-related cases – lashed out at authorities for the poor implementation of exisiting rules on plastics by state governments, union territories and urban local bodies.

...

The country is the world’s third-largest producer of plastic waste, trailing behind only the US and China, according to a recent report from Australia’s Minderoo Foundation.

This time, the government claims to have found alternatives, in bamboo straws instead of plastic ones, and thicker plastic bags to fill in for the banned thin ones – a product it hopes will encourage recycling because of its longevity.

Thinner carrier bags find fewer takers among waste collectors across 11 informal recycling hubs in the national capital Delhi, according to a survey conducted last year by non-profit Toxics Link, which is based in the city.

...

The move by India is the latest in a series of measures taken by countries such as China and Canada, which have decided to curb the manufacture and purchase of plastic as calls to get rid of the material grow globally.

https://www.independent.co.uk/climate-change/news/india-single-use-plastic-ban-b2113556.html
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

Sigmetnow

  • Multi-year ice
  • Posts: 26266
    • View Profile
  • Liked: 1167
  • Likes Given: 436
Re: Consequences of using plastics
« Reply #134 on: July 04, 2022, 01:37:59 AM »
July 2, 2022
A huge mass of used wet wipes has formed an 'island' that has changed the course of England's second longest river, MP says
Quote
Ministers have asked people to stop using wet wipes, and the government is considering banning those that contain plastic.

Fleur Anderson, a Labour MP, warned that when flushed down the drains, wet wipes don't disintegrate and instead end up in the Thames, England's second-longest river.


Most wet wipes are made with plastic, which does not break down when flushed, according to environmental charity Thames21.

Furthermore, they can break down into microplastic and damage aquatic life and the Thames' ecosystem, the charity said.


Wet wipes also make up nearly 90% of the materials contained in "fatbergs," which are masses of solid waste made of grease and fat that can block sewers. …
https://news.yahoo.com/huge-mass-used-wet-wipes-153303358.html
People who say it cannot be done should not interrupt those who are doing it.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #135 on: July 04, 2022, 02:45:51 PM »
'They're everywhere': microplastics in oceans, air and human body

...

"We did not imagine 10 years ago that there could be so many small microplastics, invisible to the naked eye, and that they were everywhere around us," said Jean-Francois Ghiglione, a researcher at the Laboratory of Microbial Oceanography in France.

"And we could not yet envisage finding them in the human body".

Now scientific studies are increasingly detecting microplastics in some human organs—including "the lungs, spleen, kidneys, and even the placenta," Ghiglione told AFP.

It may not come as much of a shock that we breathe in these particles present in the air, in particular microfibres from synthetic clothing.

"We know that there's microplastics in the air, we know it's all around us," said Laura Sadofsky, from the Hull York Medical School in the UK.

Her team found polypropylene and PET (polyethylene terephthalate) in lung tissue, identifying fibres from synthetic fabrics.

"The surprise for us was how deep it got into the lungs and the size of those particles," she told AFP.

In March, another study reported the first traces of PET found in the blood.

Given the small sample of volunteers, some scientists say it is too early to draw conclusions, but there are concerns that if plastics are in the bloodstream they could be transported to all organs.

Breathing in plastics for years

In 2021, researchers found microplastics in both maternal and foetal placental tissue, expressing "great concern" over the possible consequences on the development of the foetus.

But concern is not the same as a proven risk.

"If you ask a scientist if there is a negative effect, he or she would say 'I don't know'," said Bart Koelmans, professor in Aquatic Ecology and Water Quality at Wageningen University.

...

In 2019, a shock report by the environmental charity WWF estimated that people are ingesting and inhaling up to five grams of plastic per week—enough to make a credit card.

Koelmans, who contests the methodology and results of that study, has calculated the amount is closer to a grain of salt.

"Over a lifetime, a grain of salt per week is still quite something," he told AFP.

While health studies on humans have yet to be developed, toxicity in certain animals reinforces concerns.

"Small microplastics invisible to the naked eye have deleterious effects on all the animals that we have studied in the marine environment, or on land," said Ghiglione.

...

https://phys.org/news/2022-07-theyre-microplastics-oceans-air-human.html
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #136 on: July 17, 2022, 09:07:14 PM »
Why fake grass is far from green in ways you might not guess

...

But I keep getting leaflets urging me to destroy my leafy garden and to landscape it with artificial grass, allegedly “almost maintenance free”. They show “gardens” with emerald-green plastic “lawns” surrounded by austere plant-free fencing. These lifeless green carpets are set off with paving stones and have concrete “planters”, bleak designs sending a message: no living creatures tolerated here.

In my neighbourhood, this advertising has worked. Two decades ago, most London gardens would have shrubs and grass. Now the lethal shroud of plastic grass is everywhere, a coal- and oil-derived product, which can’t be easily recycled, replacing natural vegetation. Those who adopt it usually destroy front gardens too, ripping out hedges and tiling over the flower beds. Estate agents call these “stunning low-maintenance gardens” and treat them as performance indicators that the house has been “modernised”.

...

Imagine how grim those bright white slabs and plastic lawns are in this heatwave. Artificial lawns get hotter than bitumen and concrete. Without a blade of grass, and no shading vegetation, they are furnaces, emitting an unpleasant smell of melting plastic. For dog owners, there are particular perils, and not just the smell of dog urine. “Whoever has fake grass in their garden,” one hapless owner on the Isle of Wight wrote last week, “Don’t let your dogs on it, it’s just burnt my dog’s paws.”

Artificial “lawns” turn out to be high maintenance after all. They need to be watered to cool them down. They need special cleaning products to get rid of smells and stains. You even have to vacuum them to get rid of leaves.

...

There’s plenty of public anger about this. The Twitter account Shitlawns, “showcasing the hideous trend of plastic lawns” has 30,000 followers. Newcastle city council has just agreed to “avoid” fake grass in landscaping. More boldly, Quebec prohibits plastic grass, and several German cities, including Nuremberg, have recently banned what they call “horror gardens”. Their plague involves gravel not plastic grass but the issues are the same. There is “no cooling effect in gravel gardens”, the council said, “the hard surfaces contribute to flooding risk”, and “horror gardens” are disastrous for biodiversity.

...

https://www.theguardian.com/environment/2022/jul/17/why-fake-grass-is-far-from-green-in-ways-you-might-not-guess
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #137 on: July 21, 2022, 09:02:25 AM »
The story of how plastic was invented, and how it’s turned into a big problem

...

The amount of plastic film manufactured every year across the globe is enough to cover the UK — twice. The number of other plastic-made products such as bags, utensils, bottles, etc that come into circulation each year weighs more than 380 billion tons.

...

However, the first man-made plastic material Parkesine was not known to the public before 1864’s Great London Exposition, an international science fair where English metallurgist Alexander Parkes exhibited Parkesine for the first time (yes, he named it after himself).

...

From Parkesine to bakelite to “plastic”
The very next year, American inventor John W. Hyatt came up with a new plastic material called celluloid. It was a blend of nitrocellulose and camphor and emerged as a popular replacement for animal-derived materials such as ivory and tortoiseshell.

Celluloid turned out to be a huge commercial success and Hyatt founded his own company, manufacturing piano keys, billiard balls, toys, artificial gemstones, combs, and a wide range of products in bulk using celluloid. By the early 1880s, Hyatt even started using celluloid to create linen-like men’s wear. A couple of years later, camera company Eastman Kodak’s chemist Henry Reichenbach began developing thin films from celluloid that later became a primary material for capturing photos and shooting motion pictures via camera. However, since celluloid camera films were expensive and could easily catch fire, they were replaced by cellulose-acetate films in the 1930s.

Though celluloid was very popular, the word “plastic” still didn’t exist by the 1900s. Belgian scientist Leo Hendrick Baekeland used the word “plastics” for the first time in 1907 when he came up with the first 100% synthetic plastic substance called bakelite.

The following years witnessed the birth of polymer science which led to the rise of numerous other plastic materials such as polyethylene, polyvinyl chloride (PVC), polypropylene, etc. In 1959, Swedish engineer Sten Gustaf Thulin invented the most common plastic product: the plastic carry bag. According to his son Raoul Thulin, Sten created plastic bags to replace paper bags which were causing large-scale deforestation at that time. He told BBC in an interview, “To my dad, the idea that people would simply throw these away would be bizarre”.

...

Here’s a disturbing fact: every 60 seconds, approximately one million plastic bottles are bought by people around the globe. That means that every year more than 500 billion plastic bottles are manufactured and sold, which is more than 62 times the current global human population. Here are more concerning facts about plastic:

A report from UNEP (United Nations Environment Program) suggests that the total plastic on Earth currently weighs 8.3 billion tons and out of this about 5 billion tons of used plastic never got recycled. Since plastic is believed to take hundreds of years (450 years or more) to decompose, this huge mass of waste is likely to release toxins in the oceans and contaminate our soil for many coming centuries.

...

A study revealed that plastic has become so abundant in our environment that most of the food we eat now contains microplastic particles. On average, each year a single person consumes 70,000 microplastic particles along with his or her food, these microplastics later lead to problems such as abnormal pregnancy, cancer, endocrine, and stomach-related disorders, cellular damage, etc. Researchers have found microplastic pieces in our blood and even our lungs.

...

A joint report developed by the World Economic Forum and Ellen MacArthur Foundation highlights that each year eight million tons of plastic (IUCN data suggest 14 tonnes) is dumped into the oceans. At this pace, by 2025, there will be two tonnes of plastic for every six tonnes of fish and by 2050, in terms of weight, the amount of plastic will overtake the total fish in the oceans.

...

https://www.zmescience.com/ecology/the-story-of-how-plastic-was-invented-and-how-its-turned-into-a-big-problem/
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #138 on: July 25, 2022, 09:12:21 PM »
Microplastics pass through fish, altering nutrient metabolism


When Dong-Fang Deng and her students make feed for the fish they raise at UWM's School of Freshwater Sciences, they often use ground fishmeal—dried fish parts from fisheries or wild catch—as the protein source.

t's possible to find microplastics in commercial fish food, she said, because the wild fish that end up in fishmeal consume some of the microplastics that litter the waters they live in. But after Deng actually spotted tiny plastic beads in pre-ground fishmeal, it prompted a question.

"We wondered, "If the fish eat the microplastics, could the particles accumulate inside their bodies?'" said Deng, professor of freshwater sciences who researches the role of diet in fish farming, or aquaculture.

The research team conducted a nine-week experiment to see if they could find some answers.

"We chose yellow perch because they are a favorite fish of people living in the Great Lakes region, and the reduced supply of wild perch has driven commercial aquaculture," Deng said.

Juvenile yellow perch were fed four meals daily with feed contaminated with medium and high concentrations of microparticles of high-density polyethylene, a common plastic. A control group ate feed that was plastic-free.

At the end of the exposure period, none of the fish eating contaminated food had died and the microplastics had passed out of their bodies and showed up in their feces. That's good news, right?

Not so fast, said Deng.

Less protein and minerals

After the microplastics were excreted, exposed fish contained lower amounts of protein and minerals than fish fed the diet with no HDPE added, she said. This could be evidence that the fish's bodies were not able to break down the microplastics and needed more nutrients than normal to expel them, or the microplastics might have reduced the absorption of these nutrients from their diets.

The researchers also found evidence of altered liver function in exposed fish and a change in their gut microorganism community.
Like it does in humans, the fish gut microbial community performs essential tasks like food digestion and immune system protection.

"So, even though they didn't get 'stuck' in the body," Deng said, "that doesn't mean the exposure to microplastics wasn't harmful."

...

https://phys.org/news/2022-07-microplastics-fish-nutrient-metabolism.html
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #139 on: August 07, 2022, 11:05:07 AM »
Covid face masks 'devastating' bird populations all over the world

Face masks are entangling birds across the world, with plastic pollution is now affecting avian populations across every continent, new research shows.

The online citizen science project, Birds and Debris, is collecting photographs from around the world of birds nesting or entangled in waste.

Nearly a quarter of the photos taken show birds caught up in personal protective equipment (PPE), with the majority being disposable face masks, the researchers said.

...

"It's almost all masks," Dr Bond said.

"And if you think of the different materials a surgical mask is made from - there's the elastic that we see tangled around birds' legs or we might see birds injured by trying to ingest the fabric or the hard piece of plastic that secures it over your nose.

"So we use this catch-all term of 'plastic' but it's a whole range of different polymers, and masks are a good example of that."

...

Estimates have suggested 129 billion face masks and 65 billion gloves were used monthly at the height of the pandemic globally.

The majority of disposable face masks are made from plastic which cannot biodegrade, but may break down into microplastics that spread into the environment.

Previous research has suggested 1.6 billion disposable masks ended up in the ocean in 2020.

...

https://www.telegraph.co.uk/environment/2022/08/05/covid-face-masks-devastating-bird-populations-world/
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #140 on: September 06, 2022, 10:53:17 AM »
Ocean ‘garbage patch’ is filled with fishing gear from just a few places

Fishing gear from just five regions could account for most of the floating plastic debris in the ‘North Pacific garbage patch’, a vast swathe of the North Pacific Ocean that holds tens of thousands of tonnes of plastic.

A study published on 1 September in Scientific Reports1 found that as much as 86% of the large pieces of floating plastic in the garbage patch are items that were abandoned, lost or discarded by fishing vessels. The finding is counterintuitive, given that most marine plastic makes its way into the ocean through rivers.

These findings “change our understanding of the sources of plastic in the North Pacific garbage patch”, says Matthias Egger, an ocean plastic researcher at the Ocean Cleanup, a non-profit organization based in Rotterdam, the Netherlands, that develops techniques to remove plastic from the oceans. The information could help to shape future policy to reduce plastic pollution in the ocean, he says.

...

In 2018, a survey2 found that fishing nets made up nearly half of the debris. The nets clearly came from fishing vessels, but the research team couldn't determine the source of the rest of the plastic in the area. So, in 2019, the Ocean Cleanup collected more than 6,000 floating items totalling around 547 kilograms from the patch, and analysed the debris for letters and logos to pin down its origins.

The researchers determined production dates for dozens of items, including a buoy dating back to 1966. They were also able to track down the regions of origin of 232 objects. One-third of the identified debris came from Japan — possibly in part because of the tsunami that hit the country in 2011 — with the rest split between Taiwan, the United States, South Korea and the Chinese mainland, Hong Kong and Macau.

Notably absent from the debris was plastic from nations with lots of plastic pollution in their rivers. This was surprising, says Egger, because rivers are thought to be the source of most ocean plastic. Instead, most of the garbage-patch plastic seemed to have been dumped into the ocean directly by passing ships.

This suggests that “plastic emitted from land tends to accumulate along coastal areas, while plastic lost at sea has a high chance of accumulating in ocean garbage patches”, Egger says. The combination of the new results and the finding that fishing nets make up a large proportion of the debris indicates that fishing — spearheaded by the five countries and territories identified in the study — is the main source of plastic in the North Pacific garbage patch.

...

https://www.nature.com/articles/d41586-022-02788-4
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #141 on: September 12, 2022, 08:58:29 PM »
Plastic may be making you obese, scientists warn

Chemicals known as ‘obesogens’ directly boost the production of fatty tissues associated with obesity

Scientists have warned that the presence of plastic in everyday items could be a factor responsible for obesity.

The presence of certain chemicals known as “obesogens” in everyday items disturbs the normal functioning of human metabolism, upsetting the body’s ability to regulate its intake and expenditure of energy.

Recent research says that obesogens directly boost the production of specific cell types and fatty tissues associated with obesity and are found in all sorts of items including plastic packaging, clothes, furniture, cosmetics, food additives, herbicides and pesticides.

“Obesogens are certainly a contributing factor to the obesity epidemic,” Bruce Blumberg, an expert on obesity and endocrine-disrupting chemicals from the University of California, Irvine, was quoted as saying to Bloomberg.

“The difficulty is determining what fraction of obesity is related to chemical exposure.”

A study published in the journal Environmental Science and Technology in January this year found that there are over 55,000 different chemical components in plastic consumer products and identified 629 substances of which 11 are known to be metabolism-disrupting chemicals (MDCs) that trigger obesity.

According to recent research, obesogens have harmful effects on individuals that often go undetected by traditional tests of chemical toxicity.

Mr Blumberg and his colleagues demonstrate this in studies using tributyltin (TBT), a chemical used in wood preservatives, among other things.

In their experiments, scientists found that exposing mice to low and supposedly safe levels of TBT significantly increased fat accumulation in the next three generations.

In addition, around 1,000 obesogens with such effects have already been identified in studies with animals or humans, the Bloomberg report said.

This includes Bisphenol A, a chemical widely used in plastics, and phthalates, plasticising agents used in paints, medicine and cosmetics.

Others include parabens used as preservatives in food and paper products and chemicals called organotins used as fungicides.

Recent studies have also found that obesity affects cats, dogs and other animals living in proximity to people as well as in laboratory rodents and primates – animals raised under strictly controlled conditions of caloric intake and exercise.

https://www.independent.co.uk/climate-change/news/plastic-obesity-epidemic-fat-study-b2165089.html

Chemicals found in plastic consumer products can affect human metabolism, contribute to the development of fat cells in the body and trigger obesity, according to a new study.

The research, published in the journal Environmental Science and Technology on Wednesday, found over 55,000 different chemical components in plastic consumer products and identified 629 substances of which 11 of them are known to be metabolism-disrupting chemicals (MDCs).

“Our experiments show that ordinary plastic products contain a mix of substances that can be a relevant and underestimated factor behind overweight and obesity,” Martin Wagner, a co-author of the study from the Norwegian University of Science and Technology (NTNU), said in a statement.

In the study, the researchers looked at 34 different daily-use plastic products such as yoghurt containers, drink bottles and kitchen sponges to see which chemicals they contained.

Obesity is a leading contributing factor linked to some of the most common causes of death in the world, such as cardiovascular disease and cancer, with nearly 650 million people across the globe living with the condition.

...

“It’s very likely that it is not the usual suspects, such as Bisphenol A, causing these metabolic disturbances. This means that other plastic chemicals than the ones we already know could be contributing to overweight and obesity,” said Johannes Völker, the first author of the study who is affiliated with NTNU’s Department of Biology.

..

https://www.independent.co.uk/news/science/plastic-consumer-products-chemicals-obesity-b2001645.html

Perspectives and challenges of epigenetic determinants of childhood obesity: A systematic review

Summary

The tremendous increase in childhood obesity prevalence over the last few decades cannot merely be explained by genetics and evolutionary changes in the genome, implying that gene–environment interactions, such as epigenetic modifications, likely play a major role. This systematic review aims to summarize the evidence of the association between epigenetics and childhood obesity. A literature search was performed via PubMed and Scopus engines using a combination of terms related to epigenetics and pediatric obesity. Articles studying the association between epigenetic mechanisms (including DNA methylation and hydroxymethylation, non-coding RNAs, and chromatin and histones modification) and obesity and/or overweight (or any related anthropometric parameters) in children (0–18 years) were included. The risk of bias was assessed with a modified Newcastle–Ottawa scale for non-randomized studies. One hundred twenty-one studies explored epigenetic changes related to childhood obesity. DNA methylation was the most widely investigated mechanism (N = 101 studies), followed by non-coding RNAs (N = 19 studies) with evidence suggestive of an association with childhood obesity for DNA methylation of specific genes and microRNAs (miRNAs). One study, focusing on histones modification, was identified. Heterogeneity of findings may have hindered more insights into the epigenetic changes related to childhood obesity. Gaps and challenges that future research should face are herein described.

https://onlinelibrary.wiley.com/doi/full/10.1111/obr.13389
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #142 on: September 18, 2022, 04:21:31 PM »
Nanoplastics can disrupt human liver, lung cells' processes in lab experiments

What happens when people unknowingly eat, drink or inhale nearly invisible pieces of plastic? Although it's unclear what impact this really has on humans, researchers have now taken a step toward answering that question. In ACS' Environmental Science & Technology, a team reports laboratory results indicating that tiny plastic particles could enter liver and lung cells and disrupt their regular processes, potentially causing adverse health outcomes.

Plastic can't be avoided in daily life. Many products that we bring into our homes are made of plastic or wrapped in plastic packaging -- all of which could release micro- and nanometer-sized pieces that could be accidentally consumed or inhaled. Although the health risks to humans from taking in nanoplastics isn't entirely clear, researchers recently have shown that particles less than 100 nm-wide can enter animals' blood and organs, causing inflammation, toxicity and neurological changes. So, Zongwei Cai, Chunmiao Zheng and colleagues wanted to examine the molecular-level and metabolic impacts when human lung and liver cells are exposed to similarly sized nanoplastics.

The researchers cultured human liver and lung cells separately in laboratory plates and treated them with different amounts of 80 nm-wide plastic particles. After two days, electron microscopy images showed that nanoplastics had entered both types of cells without killing them.

To learn more about what happened to the cells, the researchers looked at the compounds released by mitochondria -- crucial energy-producing organelles that are thought to be sensitive to nanoplastics -- during metabolism. As liver and lung cells were exposed to more nanoplastics, they produced more reactive oxygen species and different amounts of nucleotides, nucleosides, amino acids, peptides and carboxylic acids, indicating that multiple metabolic processes were disturbed. In some cases, mitochondrial pathways appeared to be dysfunctional. These observations demonstrate that while nanoplastics exposure doesn't kill human lung and liver cells, it could disrupt critical processes, potentially causing negative impacts to organs, the researchers say.

https://www.sciencedaily.com/releases/2022/09/220915104824.htm

Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #143 on: September 18, 2022, 04:30:33 PM »
Study Shows How Microplastics Can Easily Climb The Food Chain. Should We Be Worried?

...

Just as with heavy metals in the ocean, it turns out nanoplastics – plastic particles less than one micrometer in size – can also move up the food chain. These particles are primarily the result of bigger plastic pieces being weathered down by natural processes – sometimes by the animals ingesting them.

Researchers from Europe, led by biologist Fazel Monikh from the University of Eastern Finland, demonstrated this process in a laboratory by feeding tiny 250 nm particles of polystyrene and polyvinyl chloride to lettuce (Lactuca sativa).

After 14 days, researchers fed that lettuce to black soldier fly larvae (Hermetia illucens), then gave those larvae to hungry roach fish (Rutilus rutilus) after another 5 days. Once the fish fed on the insects for 5 days, the team dissected and imaged the tissues from each food chain (trophic) level.

Because these particles are hard to detect and can be altered during their physiological journeys, researchers encased the rare element gadolinium within the tiny plastics to more easily track them. The team used a scanning electron microscope (SEM) to make sure the plastic completely covered the metal to reduce its biological influence.

The good news is that biomagnification did not appear to occur with these types of nanoplastics in the species studied. Biomagnification is when the chemicals taken up at the lower trophic levels become more concentrated as they pass up the food chain; this is a common problem caused by pollutants like mercury and polychlorinated biphenyls.

But the images revealed nanoplastics in the gills, liver, and intestines of the fish, in the mouth and guts of the insects, and accumulated in the leaves of the lettuce.

Moreover, the two plastics behaved differently as they journeyed through the food chain. The lettuce took up slightly less polystyrene, so less of this plastic flavor was passed on compared to the polyvinyl chloride.

Properties like the size, shape, and surface chemistry of the particles could all influence the different impacts they have on life, the researchers explain. For instance, some earthworms might be more likely to break down polyethylene in the soil before it gets taken up by a plant.

"Our results show that lettuce can take up nanoplastics from the soil and transfer them into the food chain," says Monikh. "This indicates that the presence of tiny plastic particles in soil could be associated with a potential health risk to herbivores and humans if these findings are found to be generalizable to other plants and crops and to field settings."

more details:
https://www.sciencealert.com/study-shows-how-microplastics-can-easily-climb-the-food-chain-should-we-be-worried

Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #144 on: October 05, 2022, 02:26:00 PM »
Scientists figure out upcycling plastics to reduce greenhouse gas emissions

Scientists from the University of Illinois Urbana-Champaign, University of California, Santa Barbara, and Dow have developed a breakthrough process to transform the most widely produced plastic—polyethylene (PE)—into the second-most widely produced plastic, polypropylene (PP), which could reduce greenhouse gas emissions (GHG).

"The world needs more and better options for extracting the energy and molecular value from its waste plastics," said co-lead author Susannah Scott, Distinguished Professor and Mellichamp Chair of Sustainable Catalytic Processing at UC Santa Barbara. Conventional plastic recycling methods result in low-value plastic molecules and, thus, offer little incentive to recycle the mountains of plastic waste that have accumulated over the past several decades.

But, Scott added, "turning polyethylene into propylene, which can then be used to make a new polymer, is how we start to build a circular economy for plastics."

...

https://phys.org/news/2022-10-scientists-figure-upcycling-plastics-greenhouse.html

Every little bit helps.
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #145 on: October 05, 2022, 02:30:12 PM »
‘One more thing’ about plastics: They could be acidifying the ocean, study says

New research suggests that plastic could contribute to ocean acidification, especially in highly polluted coastal areas, through the release of organic chemical compounds and carbon dioxide, both of which can lower the pH of seawater.

The study found that sunlight enabled this process and that older, degraded plastics released a higher amount of dissolved organic carbon and did more to lower the pH of seawater.

However, the findings of this study were conducted in a laboratory, so it’s unclear whether experiments conducted in estuaries or the open ocean would yield similar results, experts said.

...

However, he questioned whether plastic would significantly contribute to acidification in the actual ocean. For instance, he suggested that waves and currents could mix the water and dissipate the impacts of plastic acidification. He also pointed out that ocean plastics are often encrusted with biological organisms that consume carbon dioxide and produce oxygen, which might also reduce the plastic’s contribution to acidification.

Furthermore, Hall-Spencer noted that a lot of ocean plastic ends up in places far from sunlight — like on the seafloor.

“It’s important that we know these plastics break down, and in doing so, they lower the pH,” he said. “But what’s needed as a next stage is verification that plastics in the ocean are lowering the pH.”

...

https://news.mongabay.com/2022/10/one-more-thing-about-plastics-they-could-be-acidifying-the-ocean-study-says/
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #146 on: October 10, 2022, 03:15:05 PM »
Thanks to a Honeycomb, We Know The Secret to The Wax Worm's Ability to Destroy Plastic


Researchers have identified a pair of enzymes in wax worm saliva that naturally break down a common form of plastic within a few hours at room temperature.

Polyethylene is among the most widely used plastics in the world, having uses in everything from food containers to shopping bags. Unfortunately, its robustness also makes it a stubbornly persistent pollutant – the polymer needs to be treated with high temperatures to kickstart the degradation process.

Wax worm saliva contains the only enzymes we know of that can work on untreated polyethylene, which makes these naturally occurring proteins potentially rather useful for recycling.

Federica Bertocchini, a molecular biologist and amateur beekeeper, accidentally discovered wax worms have a talent for degrading plastic a few years ago.

"At the end of the season, usually beekeepers put some empty beehives in a storage room, to put them back in the field in the spring," Bertocchini recently told AFP.

"One year I did that, and I found my stored honeycombs plagued with wax worms."

She cleaned the honeycomb and put all the wax worms in a plastic bag. When she came back a short time later, she found the bag "riddled with holes".

Wax worms (Galleria mellonella) are larvae that eventually transform into short-lived wax moths. In the larval stage, the worms make themselves right at home in bee hives where they feed on wax and pollen.

and more:

https://www.sciencealert.com/thanks-to-a-honeycomb-we-know-the-secret-to-the-wax-worms-ability-to-destroy-plastic
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

neal

  • Grease ice
  • Posts: 731
    • View Profile
  • Liked: 205
  • Likes Given: 50
Re: Consequences of using plastics
« Reply #147 on: October 13, 2022, 12:49:58 AM »
 Microplastics found in breast milk...
In this pilot single-centre observational prospective study, human breastmilk samples collected from N. 34 women were analysed by Raman Microspectroscopy, and, for the first time, MP contamination was found in 26 out of 34 samples. The detected microparticles were classified according to their shape, colour, dimensions, and chemical composition. The most abundant MPs were composed of polyethylene, polyvinyl chloride, and polypropylene, with sizes ranging from 2 to 12 µm. MP data were statistically analysed in relation to specific patients’ data (age, use of personal care products containing plastic compounds, and consumption of fish/shellfish, beverages, and food in plastic packaging), but no significant relationship was found, suggesting that the ubiquitous MP presence makes human exposure inevitable.
https://t.co/AJL6MAdSqB

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #148 on: October 19, 2022, 03:21:20 PM »
The consequences of a plastic-filled world


How big of a problem is plastic?
Plastic has become a staple of life all around the world, from the water bottles we drink out of to the utensils we use to the packaging we receive products in. However, rampant plastic production only really began 50 years ago. Between the 1950s and 1970s, production was quite minimal and therefore manageable. Beginning in the 1970s, plastic production rapidly picked up, tripling by the 1990s, according to the U.N. Environment Program (UNEP). Today, the world produces approximately 400 million tons of plastic waste per year.

Of the waste, about 36 percent comes from packaging, including single-use plastics like utensils and food containers, and 85 percent of single-use waste ends up in landfills or unregulated. The ocean has also become heavily polluted by plastic, the largest amount being close to 2 trillion pieces in the North Pacific Ocean. Much of that is part of the Great Pacific Garbage Patch, which is a collection of debris with an area of about 1.6 million square kilometers spanning the west coast of the U.S. to Japan.

The U.S. is the largest global producer of plastic waste, producing around 40 million tons of plastic just last year, Smithsonian Magazine reports. Only about 2 million tons were recycled, while the majority ended up in landfills and some ended up incinerated. The U.S. also takes part in plastic exports, where it sends waste to other countries to be recycled, the top destination being Canada.

What are the impacts on the environment?
Approximately 98 percent of single-use plastics are produced using fossil fuels. Based on the rising levels of plastic demand, the UNEP predicts that production will account for 19 percent of the global carbon budget by 2040.

...

https://theweek.com/feature/briefing/1017586/the-danger-of-plastic-pollution


Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

kassy

  • Moderator
  • First-year ice
  • Posts: 8588
    • View Profile
  • Liked: 2064
  • Likes Given: 2002
Re: Consequences of using plastics
« Reply #149 on: October 24, 2022, 03:10:40 PM »
Plastic recycling remains a 'myth': Greenpeace study

Plastic recycling rates are declining even as production shoots up, according to a Greenpeace U.S. report out Monday that blasted industry claims of creating an efficient, circular economy as "fiction."

Titled "Circular Claims Fall Flat Again," the study found that of 51 million tons of plastic waste generated by US households in 2021, only 2.4 million tons were recycled, or around five percent.

After peaking in 2014 at 10 percent, the trend has been decreasing, especially since China stopped accepting the West's plastic waste in 2018.

Virgin production—of non-recycled plastic, that is—meanwhile is rapidly rising as the petrochemical industry expands, lowering costs.

...

According to the report, there were five main reasons why plastic recycling is a "failed concept."

Economically unfeasible

First, plastic waste is generated in vast quantities and is extremely difficult to collect— as becomes clear during what the report called ineffective "volunteer cleanup stunts" funded by nonprofits such as "Keep America Beautiful."

Second, even if it were all collected, mixed plastic waste cannot be recycled together, and it would be "functionally impossible to sort the trillions of pieces of consumer plastic waste produced each year," the report said.

Third, the recycling process itself is environmentally harmful, exposing workers to toxic chemicals and itself generating microplastics.

Fourth, recycled plastic carries toxicity risks through contamination with other plastic types in collection bins, preventing it from becoming food-grade material again.

Fifth and finally, the process of recycling is prohibitively expensive.

...

https://phys.org/news/2022-10-plastic-recycling-myth-greenpeace.html
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.