Plastic and other Environmental Dangerous Waste
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Lisbeth
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Re: Plastic and other Environmental Dangerous Waste
We'll have to eat a lot of lobsters, but probably also the shrimps and alike are fine 
There are lots of farming of those all over and they often sell them ready for eating
There are lots of farming of those all over and they often sell them ready for eating "Education is the most powerful weapon which you can use to change the world." Nelson Mandela
The desire for equality must never exceed the demands of knowledge
The desire for equality must never exceed the demands of knowledge
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RogerFraser
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Re: Plastic and other Environmental Dangerous Waste
Biodegradable shopping bags buried for three years still work
A new study casts doubt on the viability of biodegradable plastics as an answer to plastic pollution.
BY LAURA PARKER
https://www.nationalgeographic.com/envi ... 2ScYfuEm9Y
Richard Thompson, a British marine biologist who devoted his career to studying plastic waste, has long wondered how well biodegradable shopping bags actually degrade.
So in 2015, he and his graduate students at Plymouth University buried a collection of bags labeled as biodegradable in the school’s garden.
Three years later, when the bags were dug up, they not only had remained intact, they still could carry almost five pounds of groceries.
“It did surprise me that after three years you can still carry shopping home in them,” he said in an interview with National Geographic. “They didn’t have the same strength as they had when they were brand new. But they hadn’t degraded to any meaningful extent.”
The indestructible qualities of biodegradable bags are just one of the findings in a first-of-its-kind study published today in the journal Environmental Science & Technology. The research documents deterioration of five types of shopping bags that were immersed in water, buried in soil, or exposed to outdoor air as if litter. Thompson and his team tested bags commonly dispensed in retail shops around Plymouth and concluded that none of them–including compostable bags–reliably deteriorated enough over three years to give them any environmental advantages over conventional bags. (Read more about potential problems with bioplastics.)
The study highlights how the term “biodegradable” can confuse consumers, lulling them into thinking the bag will simply disappear if thrown away. If consumers think they are being even more responsible by adding biodegradable bags to their recycling bins, that can destroy efforts to collect conventional plastic bags for remanufacture into new bags, the scientists warn. Chemical additives in biodegradable bags can contaminate the mixture, rendering it unusable.
“If you’ve got bags with a self-destruct function, the recycler doesn’t want that mixed in with other bags,” Thompson said. “They need known and consistent material. So the issue becomes how do you separate biodegradables from conventional plastics? How is the consumer supposed to know how to dispose of it?”
Bag manufacturer disagrees
The study is likely to rekindle a controversy that erupted last summer after the BBC reported preliminary results showing one of the biodegradable bags had not degraded after two years.
Symphony Environmental Technologies, which made the bag that was still intact at two years, criticized the study and called into question Thompson’s credentials, noting “he is not a polymer scientist.”
Thompson, who was awarded the Order of the British Empire by Queen Elizabeth for his research on plastic waste, said he stands behind his group’s research.
“We are entirely confident in the work, as we have been all along,” he said. “And it’s been through full peer review.”
“Biodegradable” controversy
Disposable shopping bags are one of the world’s most widely used plastic products. They are often used for only moments, and the European Union is estimated to use about 100 billion bags every year, with annual use per capita exceeding 450 bags per year in some EU countries. As the world searches for solutions to the growing accumulation of plastic waste on Earth, products advertised as biodegradable have been marketed with increasing frequency, offering the promise of an easy answer to using disposable bags. But in many cases, biodegradability may be just that—only a promise.
“There is no magical degradable material that will breakdown in a very short time in all environments that you expose it to. That does not exist,” says Ramani Narayan, a chemical engineer at Michigan State University and expert on biodegradables. He did not participate in the Plymouth study.
Both the United Nations and the European Union have staked out positions against biodegradables. The UN, in a report published in 2016, flatly declared that biodegradable plastics are not the answer to marine plastic pollution. And the EU last year, with some controversy, recommended banning oxo-biodegradables, which contain additives that are designed to hasten breakdown of polymer molecules, sometimes, according to Britain’s largest manufacturer of oxo products, Symphony, “in the same way as a leaf and leaving nothing behind.”
That process causes the bag to disintegrate into small microplastics, raising concerns that they are adding to the growing collection of microplastics in the world’s oceans.
Testing at three outdoor sites
Thompson and his team tested five types of bags, including one compostable bag, one conventional high-density polyethylene bag, and three kinds of biodegradable bags. Two of the biodegradable bags were oxo-biodegradable. The other biodegradable bag was manufactured in a way that promotes its breakdown differently.
Bags were exposed to environmental conditions in three different sites. For the experiment, some of the bags were cut into strips and placed in mesh pouches that exposed them to outdoor elements at each of three different test sites. Whole bags were also used in each of the test locations.
For the soil test in the university garden, samples were buried almost ten inches deep. For the outdoor exposure test, samples were placed on a wall in the garden with a southern exposure. For the marine test, samples were submerged more than three feet beneath the surface of Plymouth Harbor. A fourth laboratory test site was set up as a control.
Samples were set out July 10, 2015, and inspected regularly for signs of surface loss, holes, or disintegration. Samples were also measured for tensile strength, meaning how easily they broke under tension.
Compostable bag disappears
At the harbor site, all the bags and test strips had acquired a microbial biofilm on the surface after a month. The compostable bag disappeared after three months.
At the open-air site in the garden, all of the bags and test strips had become too brittle to test further or had disintegrated into microplastics after nine months. They could not be tested further.
At the soil site in the garden, the bags remained intact. Although the compostable bag survived in its original shape for 27 months, it was unable to hold any weight without tearing.
Narayan, the chemist, says the study provides real world data revalidating the limitations of biodegradables. But he questioned the inclusion of a compostable bag in tests that compostable bags are not designed to endure. Compostable bags, he says, are intended to be disposed of in industrial composters and regulations in the United States and most other nations require label instructions that clearly describe that.
“That is where the confusion is,” he says. “The compostable bag is biodegradable only in the industrial composting environment and is meant to be disposed of in that environment.”
Vegware, the maker of the compostable bags used in the study, said in a statement to the Guardian newspaper it has updated its description of its bag labels to say: “commercially compostable where accepted.”
Likewise, Symphony says oxo-biodegradables are not intended to degrade in landfills or submerged at depth in the seas. Rather, oxo-biodegradable bags are intended to degrade if they become litter on the open landscape or ocean surface, said Michael Stephen, Symphony's deputy chairman, in an interview.
Oxo-biodegradables contain stabilizers to give the bags a “useful service life,” Stephen said, and keep them from falling apart while the customer is carrying groceries to their car. Usually, he said, bag companies want the stabilizers to function 18 months.
“When the stabilizer has been exhausted and the product has come to the end of its useful life, then the catalyst kicks in and it starts to degrade,” Stephen said.
The timeline for degradation varies. “In a warm environment, it will degrade within a year. In a damp, cold environment, maybe two or three years, but it will be a whole lot quicker than conventional plastic,” Stephen said. "Do you want two years or 100 years?"
Imogen Napper, who led the study as part of her PhD and a National Geographic Explorer, said she noticed “very little change” in the samples in the soil over the three years. Still, she was skeptical they would hold groceries. But she loaded a bag with box of cereal, cans of Coke, bananas and oranges, crackers, and pasta. “The bags were discolored and disgusting, but they were still usable,” she said.
Thompson said the study should not be read as an argument against development of biodegradables or compostables. Instead, he says, the study argues for rethinking which products work best as biodegradables. “We’ve got to link these products to appropriate uses,” he said.
Contained environments, such as football stadiums, may be better suited to use biodegradable or compostable products than retail shops. Shopping bags can end up anywhere at the end of their lives. But in a stadium, disposable food containers and wrappers, even those containing uneaten food, can be gathered in one place, and all of the waste can be processed in an industrial composter. “The idea that all of that can go into the same waste stream makes sense,” Thompson said.
A better future for plastic bags, he suggested, may be to reverse course and stick with the property that made them so popular in the first place–durability. That is the study’s final conclusion: “A bag that can and is reused many times presents a better alternative to degradability.”
A new study casts doubt on the viability of biodegradable plastics as an answer to plastic pollution.
BY LAURA PARKER
https://www.nationalgeographic.com/envi ... 2ScYfuEm9Y
Richard Thompson, a British marine biologist who devoted his career to studying plastic waste, has long wondered how well biodegradable shopping bags actually degrade.
So in 2015, he and his graduate students at Plymouth University buried a collection of bags labeled as biodegradable in the school’s garden.
Three years later, when the bags were dug up, they not only had remained intact, they still could carry almost five pounds of groceries.
“It did surprise me that after three years you can still carry shopping home in them,” he said in an interview with National Geographic. “They didn’t have the same strength as they had when they were brand new. But they hadn’t degraded to any meaningful extent.”
The indestructible qualities of biodegradable bags are just one of the findings in a first-of-its-kind study published today in the journal Environmental Science & Technology. The research documents deterioration of five types of shopping bags that were immersed in water, buried in soil, or exposed to outdoor air as if litter. Thompson and his team tested bags commonly dispensed in retail shops around Plymouth and concluded that none of them–including compostable bags–reliably deteriorated enough over three years to give them any environmental advantages over conventional bags. (Read more about potential problems with bioplastics.)
The study highlights how the term “biodegradable” can confuse consumers, lulling them into thinking the bag will simply disappear if thrown away. If consumers think they are being even more responsible by adding biodegradable bags to their recycling bins, that can destroy efforts to collect conventional plastic bags for remanufacture into new bags, the scientists warn. Chemical additives in biodegradable bags can contaminate the mixture, rendering it unusable.
“If you’ve got bags with a self-destruct function, the recycler doesn’t want that mixed in with other bags,” Thompson said. “They need known and consistent material. So the issue becomes how do you separate biodegradables from conventional plastics? How is the consumer supposed to know how to dispose of it?”
Bag manufacturer disagrees
The study is likely to rekindle a controversy that erupted last summer after the BBC reported preliminary results showing one of the biodegradable bags had not degraded after two years.
Symphony Environmental Technologies, which made the bag that was still intact at two years, criticized the study and called into question Thompson’s credentials, noting “he is not a polymer scientist.”
Thompson, who was awarded the Order of the British Empire by Queen Elizabeth for his research on plastic waste, said he stands behind his group’s research.
“We are entirely confident in the work, as we have been all along,” he said. “And it’s been through full peer review.”
“Biodegradable” controversy
Disposable shopping bags are one of the world’s most widely used plastic products. They are often used for only moments, and the European Union is estimated to use about 100 billion bags every year, with annual use per capita exceeding 450 bags per year in some EU countries. As the world searches for solutions to the growing accumulation of plastic waste on Earth, products advertised as biodegradable have been marketed with increasing frequency, offering the promise of an easy answer to using disposable bags. But in many cases, biodegradability may be just that—only a promise.
“There is no magical degradable material that will breakdown in a very short time in all environments that you expose it to. That does not exist,” says Ramani Narayan, a chemical engineer at Michigan State University and expert on biodegradables. He did not participate in the Plymouth study.
Both the United Nations and the European Union have staked out positions against biodegradables. The UN, in a report published in 2016, flatly declared that biodegradable plastics are not the answer to marine plastic pollution. And the EU last year, with some controversy, recommended banning oxo-biodegradables, which contain additives that are designed to hasten breakdown of polymer molecules, sometimes, according to Britain’s largest manufacturer of oxo products, Symphony, “in the same way as a leaf and leaving nothing behind.”
That process causes the bag to disintegrate into small microplastics, raising concerns that they are adding to the growing collection of microplastics in the world’s oceans.
Testing at three outdoor sites
Thompson and his team tested five types of bags, including one compostable bag, one conventional high-density polyethylene bag, and three kinds of biodegradable bags. Two of the biodegradable bags were oxo-biodegradable. The other biodegradable bag was manufactured in a way that promotes its breakdown differently.
Bags were exposed to environmental conditions in three different sites. For the experiment, some of the bags were cut into strips and placed in mesh pouches that exposed them to outdoor elements at each of three different test sites. Whole bags were also used in each of the test locations.
For the soil test in the university garden, samples were buried almost ten inches deep. For the outdoor exposure test, samples were placed on a wall in the garden with a southern exposure. For the marine test, samples were submerged more than three feet beneath the surface of Plymouth Harbor. A fourth laboratory test site was set up as a control.
Samples were set out July 10, 2015, and inspected regularly for signs of surface loss, holes, or disintegration. Samples were also measured for tensile strength, meaning how easily they broke under tension.
Compostable bag disappears
At the harbor site, all the bags and test strips had acquired a microbial biofilm on the surface after a month. The compostable bag disappeared after three months.
At the open-air site in the garden, all of the bags and test strips had become too brittle to test further or had disintegrated into microplastics after nine months. They could not be tested further.
At the soil site in the garden, the bags remained intact. Although the compostable bag survived in its original shape for 27 months, it was unable to hold any weight without tearing.
Narayan, the chemist, says the study provides real world data revalidating the limitations of biodegradables. But he questioned the inclusion of a compostable bag in tests that compostable bags are not designed to endure. Compostable bags, he says, are intended to be disposed of in industrial composters and regulations in the United States and most other nations require label instructions that clearly describe that.
“That is where the confusion is,” he says. “The compostable bag is biodegradable only in the industrial composting environment and is meant to be disposed of in that environment.”
Vegware, the maker of the compostable bags used in the study, said in a statement to the Guardian newspaper it has updated its description of its bag labels to say: “commercially compostable where accepted.”
Likewise, Symphony says oxo-biodegradables are not intended to degrade in landfills or submerged at depth in the seas. Rather, oxo-biodegradable bags are intended to degrade if they become litter on the open landscape or ocean surface, said Michael Stephen, Symphony's deputy chairman, in an interview.
Oxo-biodegradables contain stabilizers to give the bags a “useful service life,” Stephen said, and keep them from falling apart while the customer is carrying groceries to their car. Usually, he said, bag companies want the stabilizers to function 18 months.
“When the stabilizer has been exhausted and the product has come to the end of its useful life, then the catalyst kicks in and it starts to degrade,” Stephen said.
The timeline for degradation varies. “In a warm environment, it will degrade within a year. In a damp, cold environment, maybe two or three years, but it will be a whole lot quicker than conventional plastic,” Stephen said. "Do you want two years or 100 years?"
Imogen Napper, who led the study as part of her PhD and a National Geographic Explorer, said she noticed “very little change” in the samples in the soil over the three years. Still, she was skeptical they would hold groceries. But she loaded a bag with box of cereal, cans of Coke, bananas and oranges, crackers, and pasta. “The bags were discolored and disgusting, but they were still usable,” she said.
Thompson said the study should not be read as an argument against development of biodegradables or compostables. Instead, he says, the study argues for rethinking which products work best as biodegradables. “We’ve got to link these products to appropriate uses,” he said.
Contained environments, such as football stadiums, may be better suited to use biodegradable or compostable products than retail shops. Shopping bags can end up anywhere at the end of their lives. But in a stadium, disposable food containers and wrappers, even those containing uneaten food, can be gathered in one place, and all of the waste can be processed in an industrial composter. “The idea that all of that can go into the same waste stream makes sense,” Thompson said.
A better future for plastic bags, he suggested, may be to reverse course and stick with the property that made them so popular in the first place–durability. That is the study’s final conclusion: “A bag that can and is reused many times presents a better alternative to degradability.”
Re: Plastic and other Environmental Dangerous Waste
..............A better future for plastic bags, he suggested, may be to reverse course and stick with the property that made them so popular in the first place–durability. That is the study’s final conclusion: “A bag that can and is reused many times presents a better alternative to degradability.”......
Hah !!......If this happens , then a lot of bag manufacturers , especially small mom-and-dad concerns , will go out of business . These companies rely on continued sales . You cannot take away people's lively-hood
And , what about plastic bottles , and especially PET containers . They are certainly re-usable , but still it pollutes in ever growing manners
Hah !!......If this happens , then a lot of bag manufacturers , especially small mom-and-dad concerns , will go out of business . These companies rely on continued sales . You cannot take away people's lively-hood
And , what about plastic bottles , and especially PET containers . They are certainly re-usable , but still it pollutes in ever growing manners
Enough is enough
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Lisbeth
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Re: Plastic and other Environmental Dangerous Waste
S. Africa Taken to Court After Doubling Coal-Emission Limits
By Bloomberg• 7 May 2019
South Africa’s government is facing a legal challenge over its decision last year to double the amount of sulfur dioxide that coal-fired power plants and refineries can emit.
groundWork, an environmental non-governmental organization, filed the challenge against Environmental Affairs Minister Nomvula Mokonyane and President Cyril Ramaphosa in the Pretoria High Court, saying the government broke the law by not publishing the amendments for comment before enacting the legislation. The law is beneficial to power company Eskom Holdings SOC Ltd. and Sasol Ltd., which produces fuel and chemicals from coal, it said.
“If the court agrees with groundWork, big sulfur-dioxide emitters like Eskom and Sasol will have to act immediately to reduce their pollution,” the organization, which is being represented by lawyers from the Centre for Environmental Rights, said in a statement. “This will requite significant capital expenditure.”
South Africa relies on coal for most of its power, with Eskom running some of the world’s biggest coal-fired power plants and spending tens of billions of dollars building two more. Albi Modise, a spokesman for the Department of Environmental Affairs, declined to comment.
The limit of 1,000 milligrams of the pollutant per normal cubic meter is significantly more lax than standards in China and India, according to groundWork. The group said sulfur dioxide leads to increased incidences of low birth weights and still births and contributes to acid rain. 8
About 25 facilities in the country are affected by the legislation, ranging from plants operated by Eskom and Sasol to coal boilers at the operations of paper and pulp producers Sappi Ltd. and Mondi Ltd., groundWork said in its founding affidavit.
By Bloomberg• 7 May 2019
South Africa’s government is facing a legal challenge over its decision last year to double the amount of sulfur dioxide that coal-fired power plants and refineries can emit.
groundWork, an environmental non-governmental organization, filed the challenge against Environmental Affairs Minister Nomvula Mokonyane and President Cyril Ramaphosa in the Pretoria High Court, saying the government broke the law by not publishing the amendments for comment before enacting the legislation. The law is beneficial to power company Eskom Holdings SOC Ltd. and Sasol Ltd., which produces fuel and chemicals from coal, it said.
“If the court agrees with groundWork, big sulfur-dioxide emitters like Eskom and Sasol will have to act immediately to reduce their pollution,” the organization, which is being represented by lawyers from the Centre for Environmental Rights, said in a statement. “This will requite significant capital expenditure.”
South Africa relies on coal for most of its power, with Eskom running some of the world’s biggest coal-fired power plants and spending tens of billions of dollars building two more. Albi Modise, a spokesman for the Department of Environmental Affairs, declined to comment.
The limit of 1,000 milligrams of the pollutant per normal cubic meter is significantly more lax than standards in China and India, according to groundWork. The group said sulfur dioxide leads to increased incidences of low birth weights and still births and contributes to acid rain. 8
About 25 facilities in the country are affected by the legislation, ranging from plants operated by Eskom and Sasol to coal boilers at the operations of paper and pulp producers Sappi Ltd. and Mondi Ltd., groundWork said in its founding affidavit.
"Education is the most powerful weapon which you can use to change the world." Nelson Mandela
The desire for equality must never exceed the demands of knowledge
The desire for equality must never exceed the demands of knowledge
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Lisbeth
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Re: Plastic and other Environmental Dangerous Waste
Plastic bags will be banned at some of SA's biggest malls, including Sandton City
Jay Caboz , Business Insider SA
May 13, 2019, 02:33 PM
- Liberty Two Degrees (L2D), which owns some of South Africa’s top shopping malls, will implement a 'no plastic shopping bag' policy by 1 January 2020.
- Almost 2,000 tenants at Sandton City, Nelson Mandela Square, Melrose Arch, and the Eastgate complex may be affected.
JSE-listed real estate giant Liberty Two Degrees (L2D), which owns some of South Africa's top shopping malls, says it will implement a "no plastic shopping bag" policy at its malls by 1 January 2020.
Some 1,808 tenant shops may have to drop plastic bags by the end of the year.
L2D’s shopping mall portfolio includes Sandton City, Melrose Arch, and the Eastgate complex.
L2D decided to take the "bold step to implement a ‘no plastic shopping bags’ policy across our malls to ensure that change starts with us,” said Amelia Beattie, the company's chief executive, in a statement.
“With rising levels of plastic pollution in our country and oceans, it is no longer a case of best practice to eradicate the use of plastic shopping bags but rather a commitment of paramount importance and necessity. We are committed to implementing this initiative to drive our sustainability imperative," said Beattie.
It has already introduced recycling drop-off booths at Sandton City and at Eastgate, and this will be expanded to all its malls.
In Johannesburg, more than 740 tenants at Sandton City will be affected, as well as 425 tenants at the Eastgate Complex and 171 tenants at Nelson Mandela Square.
The company also owns Liberty Midlands Mall (240 tenants) in KwaZulu-Natal, and Liberty Promenade Mitchells Plain (172 tenants), in the Western Cape.
In addition, L2D has interests in the mixed-use precinct of Melrose Arch and the newly developed Botshabelo Mall (57 tenants), in the Free State.
Jay Caboz , Business Insider SA
May 13, 2019, 02:33 PM
- Liberty Two Degrees (L2D), which owns some of South Africa’s top shopping malls, will implement a 'no plastic shopping bag' policy by 1 January 2020.
- Almost 2,000 tenants at Sandton City, Nelson Mandela Square, Melrose Arch, and the Eastgate complex may be affected.
JSE-listed real estate giant Liberty Two Degrees (L2D), which owns some of South Africa's top shopping malls, says it will implement a "no plastic shopping bag" policy at its malls by 1 January 2020.
Some 1,808 tenant shops may have to drop plastic bags by the end of the year.
L2D’s shopping mall portfolio includes Sandton City, Melrose Arch, and the Eastgate complex.
L2D decided to take the "bold step to implement a ‘no plastic shopping bags’ policy across our malls to ensure that change starts with us,” said Amelia Beattie, the company's chief executive, in a statement.
“With rising levels of plastic pollution in our country and oceans, it is no longer a case of best practice to eradicate the use of plastic shopping bags but rather a commitment of paramount importance and necessity. We are committed to implementing this initiative to drive our sustainability imperative," said Beattie.
It has already introduced recycling drop-off booths at Sandton City and at Eastgate, and this will be expanded to all its malls.
In Johannesburg, more than 740 tenants at Sandton City will be affected, as well as 425 tenants at the Eastgate Complex and 171 tenants at Nelson Mandela Square.
The company also owns Liberty Midlands Mall (240 tenants) in KwaZulu-Natal, and Liberty Promenade Mitchells Plain (172 tenants), in the Western Cape.
In addition, L2D has interests in the mixed-use precinct of Melrose Arch and the newly developed Botshabelo Mall (57 tenants), in the Free State.
"Education is the most powerful weapon which you can use to change the world." Nelson Mandela
The desire for equality must never exceed the demands of knowledge
The desire for equality must never exceed the demands of knowledge
-
Lisbeth
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Re: Plastic and other Environmental Dangerous Waste
We tested the new R5 bags from Checkers, Pick n Pay and Woolworths – and found that there’s really no excuse to use plastic anymore
Click on the title to read the article.
Click on the title to read the article.
"Education is the most powerful weapon which you can use to change the world." Nelson Mandela
The desire for equality must never exceed the demands of knowledge
The desire for equality must never exceed the demands of knowledge
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Richprins
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Re: Plastic and other Environmental Dangerous Waste
Please check Needs Attention pre-booking: https://africawild-forum.com/viewtopic.php?f=322&t=596
Re: Plastic and other Environmental Dangerous Waste
The best news ever could be the total ban on plastic bags 
See this :http://www.msn.com/en-za/news/national/ ... &ocid=iehp
See this :http://www.msn.com/en-za/news/national/ ... &ocid=iehp
Enough is enough