Degrading plastics emit greenhouse gases

05 Août, 2018, 15:58 | Auteur: Therese Cote
  • Plastic pollution at Kamilo Point Big Island in Hawai earlier this year. Sarah Jeanne Royer

Plastic pollution at Kamilo Point, Big Island on February 14, 2018.

Methane emissions, mainly caused by burning fossil fuels, are a major driver of global warming, putting them in the crosshairs of the global fight against climate change.

About 6.3 billion tons of plastic have been generated since it was first mass produced about 70 years ago. As plastics degrade, they emit a range of chemicals-some of which have a deleterious effect on ecosystems and organisms.

Polyethylene - the substance used in shopping bags - was found to be the most prolific emitter of both gases.

These materials used to make food packaging, textiles, construction materials and various plastic goods.

All of these plastics were found to produce the harmful emissions, including polycarbonate, acrylic, polypropylene, polyethylene terephthalate, polystyrene, high-density polyethylene, and low-density polyethylene (LDPE).

F1: Mercedes troll Daniel Ricciardo amid Red Bull-Renault madness
However, it appears the recent form of the side proved to be the key factor standing in the way of the proposed move. Ricciardo yesterday announced he will be leaving Red Bull at the end of the year to join Formula One rivals Renault.

Venus reaches San Jose quarter-finals as Keys withdraws
Boulter, 22, who knocked out fifth seed Aleksandra Krunic in the first round, lost 4-6 7-5 1-6 to American Kiick. After a convincing second set from Watson, Williams returned to court with renewed energy.

Black student claims white staffer called cops on her for reading
The private college in Northampton , Massachusetts , is one of the nation's oldest and largest women's colleges. In audio snippets that she posted on Facebook, she speaks cordially to the officer.

According to an article published by the team in the online science journal PLOS ONE, the researchers exposed a variety of plastic materials available in the market to sunlight for long periods of time, and confirmed that polyethylene, which is widely used for wrapping and other purposes, emitted the largest amount of methane and ethylene.

And once initiated by this solar radiation the emission of these gases continued - even in the dark. "This source is not yet budgeted for when assessing global methane and ethylene cycles, and may be significant".

"We attribute the increased emission of greenhouse gases with time from the virgin pellets to photo-degradation of the plastic, as well as the formation of a surface layer marked with fractures, micro-cracks and pits", said lead author Sarah-Jeanne Royer, a post-doctoral scholar in the Center for Microbial Oceanography: Research and Education (C-MORE) at the time of this investigation.

The study also says that microplastics, which stem from the breakdown of plastic products, may further accelerate the production of gas. Microplastics - smaller pieces of plastic particles found to move up the food chain and in almost every corner of the world, including Antarctica - may further accelerate GHG production.

Sir David Attenborough revealed during Blue Planet 2 that "we dump eight million tonnes of plastic into the sea every year" which is killing and harming marine life.

Greenhouse gases have a direct impact on climate change and have been previously linked to changing sea levels, increasing global temperatures, drought and erosion.

Conseillé:

  • Un groupe émirati met la main sur l'armurier français Manurhin

    C'est une page de l'industrie française de l'armement qui se tourne avec la reprise de Manurhin. Le fabricant historique des pistolets de la Police a été racheté par un groupe émirati.
    Mannarino s'arrête en quarts — Los Cabos

    Mannarino s'arrête en quarts — Los Cabos

    Adrian Mannarino s'est imposé face à Elias Ymer ce mercredi lors des huitièmes de finale du tournoi de Los Cabos. Il sera opposé au Britannique Cameron Norrie , 74e joueur mondial, en quarts de finale .
    Sarri admits Chelsea are underdogs ahead of Community Shield

    Sarri admits Chelsea are underdogs ahead of Community Shield

    Hopefully, we can switch again to a back four. "The team already in a short time plays like he wants", the City boss said. So the situation is the same as it was at my first press conference: impossible.
  • Real Madrid boss Julen Lopetegui ends Luka Modric to Inter Milan talk

    Real Madrid boss Julen Lopetegui ends Luka Modric to Inter Milan talk

    His comments came as Spanish newspaper AS claimed Modric has demanded a meeting with Real over his future upon returning from his extended holiday following Croatia's run to the World Cup final.
    Doctored lungs for pigs could cut transplant waiting lists

    Doctored lungs for pigs could cut transplant waiting lists

    This eliminated the cells and blood in the lung, leaving just a lungshaped scaffold of proteins behind. For 30 days, the bioengineered lungs grew in a bioreactor before being transplanted into adult pigs.
    England vs India, first Test day 4 LIVE

    England vs India, first Test day 4 LIVE

    Failed with the bat but delivered one of his most influential performances with the ball, claiming match figures of 6/113. Several slip chances went down to the despair of bowlers on both sides, who deserved better support from their fielders.
  • Apple CEO: $1 Trillion Value Not Most Important Measure Of Success

    Apple CEO: $1 Trillion Value Not Most Important Measure Of Success

    Since then, Apple shares have increased by 1,100 per cent, and have grown by nearly a third in just the past year. Apple's stock market value is greater than the combined capitalisation of Exxon Mobil, Procter & Gamble and AT&T.
    Federal judge says DACA must be fully restored

    Federal judge says DACA must be fully restored

    The decision comes as a related case unfolds in Texas, which sets up the possibility of conflicting rulings. The Justice Department said in April that Bates' ruling "doesn't change" its position on DACA.
    Mike Scioscia expected to step down after season

    Mike Scioscia expected to step down after season

    The Angels have struggled in recent seasons, reaching the postseason only once in the last eight years. Mike Scioscia has been with the Angels for 19 years, but his contract is up at the end of the year.
  • Manchester United eye late deal for Chelsea's Willian

    Manchester United eye late deal for Chelsea's Willian

    Summer of discontent: Anthony Martial . (Getty Images) Fosu-Mensah, Darmian, Fred and Pereira all travelled to Germany. The forward also noted that while his family would always come first, he would return to Manchester on Thursday.
    Yoshinori Muto finalises Newcastle United move from Mainz

    Yoshinori Muto finalises Newcastle United move from Mainz

    Information from The Associated Press and Reuters was used in this report . "He was right last season - you had more than enough". Meanwhile a £9.5mn deal for Mainz's Japan forward Yoshinori Muto was formalised yesterday.
    Giant Rogue Planet Wandering Outside Our Solar System Has Been Discovered

    Giant Rogue Planet Wandering Outside Our Solar System Has Been Discovered

    Scientists have made the first radio-telescope detection of a huge free-floating planet beyond our solar system, a new study said. But the discovery could also have another exciting implication that goes way beyond understanding aurora.


Populaire

Deux internes de l'hôpital de la Timone blessés à la carabine — Marseille
L'un a été très légèrement blessé au dos et l'autre a reçu un projectile au cou. "Selon la DDSP (Direction Départementale de la Sécurité Publique), ses jours ne sont pas en danger", précisent nos confrères.

Saturday marks 1st Barack Obama Day in IL
President Barack Obama was honored in IL on Saturday as the state's first annual " Barack Obama Day" was officially kicked off. Bruce Rauner (R) signed the bill into law on August 6, 2017, making this year the first that the holiday is celebrated.

La Corse maintenue en vigilance orange — Canicule
La chaleur devrait légèrement baisser dimanche, avant un "deuxième pic" lundi et mardi . Face à la situation, la ministre de la santé est très présente dans les médias.

As many as 20 feared dead after plane crash in Swiss Alps
The airline posteda statement online: "We have the sad duty to announce that one of our Ju-52 aircraft had an accident today". The 20 Minutes newspaper quoted a witness who was on the mountainside at the time of the crash.

Birthday girl Meghan shines alongside Prince Harry at lavish celebration
He reportedly joked about Harry playing "dormitory monitor" during their school days. "All I wanted was a cuddle from my mummy", he said.

Schniederjans leads Barracuda Championship
The PGA Tour rookie looked to recover with a birdie on the 17th hole but then suffered another triple bogey on the first hole. Norman Xiong, the Nicklaus Award victor at the University of OR , scored eight points playing on a sponsor's exemption.

Brexit. Un risque d'absence d'accord, selon la Banque d'Angleterre
La croissance de l'économie britannique a ralenti depuis le vote en faveur du Brexit en juin 2016. Nous ne sommes pas d'accord avec cela et pensons que les taux resteront inchangés pour le moment.

USA : il se fait amputer après avoir été léché par un chien
C'est le très sérieux Washington Post qui relaie cette information, assurant qu'une bactérie est à l'origine de ce terrible drame. Sur place, les médecins choisissent de placer Greg sous surveillance, le plongeant sous intraveineuse d'antibiotiques .

Helicopter Misuse Case: NAB summons Imran Khan on August 7
But if, the Assembly session is called on August 12, then the swearing in will take place on August 15. Similarly, three days will be spent on seats reserved for women and minorities.

Facing Deportation, Former Marine's Wife Leaves for Mexico
Alejandra ultimately made a decision to "self-deport" to Mexico, rather than turn herself in to be detained and then deported. On Friday, she spoke directly to the president in Spanish. "You're not just punishing me", she said, referring to her family.