Plastic pollution: Difference between revisions

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'''Plastic pollution''' is the accumulation of [[plastic]] objects and particles (e.g. plastic bottles, bags and [[microbead]]s) in the Earth's environment that adversely affects humans, wildlife and their habitat.<ref>{{cite encyclopedia |url=http://www.britannica.com/EBchecked/topic/1589019/plastic-pollution |title=Plastic pollution |encyclopedia=Encyclopædia Britannica |access-date=1 August 2013}}</ref><ref name=":15">{{cite web |url=https://www.nationalgeographic.com/magazine/2018/06/plastic-planet-waste-pollution-trash-crisis |archive-url=https://web.archive.org/web/20180516224226/https://www.nationalgeographic.com/magazine/2018/06/plastic-planet-waste-pollution-trash-crisis/ |url-status=dead |archive-date=16 May 2018 |title=We Depend on Plastic. Now We're Drowning in It. |author=Laura Parker |date=June 2018 |website=[[NationalGeographic.com]] |access-date=25 June 2018}}</ref> Plastics that act as [[pollutant]]s are categorized by size into micro-, meso-, or macro debris.<ref name="plastics in marine environment">{{Cite book |last1=Hammer|first1=J|last2=Kraak|first2=MH|last3=Parsons|first3=JR|title=Reviews of Environmental Contamination and Toxicology|chapter=Plastics in the Marine Environment: The Dark Side of a Modern Gift|date=2012|volume=220|pages=1–44|doi=10.1007/978-1-4614-3414-6_1|pmid=22610295|isbn=978-1461434139|s2cid=5842747}}</ref> Plastics are inexpensive and durable, making them very adaptable for different uses; as a result, manufacturers choose to use plastic over other materials.<ref>Hester, Ronald E.; Harrison, R. M. (editors) (2011). [https://books.google.com/books?id=TCfYfIDymd8C&pg=PA84 Marine Pollution and Human Health]. Royal Society of Chemistry. pp. 84–85. {{ISBN|184973240X}}</ref> However, the chemical structure of most plastics renders them resistant to many natural processes of [[environmental degradation|degradation]] and as a result they are slow to degrade.<ref name="Plastic Pollution">{{cite web |title=When The Mermaids Cry: The Great Plastic Tide|last1=Le Guern|first1=Claire|date=March 2018|website=Coastal Care|url=https://coastalcare.org/2020/01/plastic-pollution-when-the-mermaids-cry-the-great-plastic-tide-by-claire-le-guern/ }}</ref> Together, these two factors allow large volumes of plastic to enter the environment as mismanaged [[waste]] which persists in the [[ecosystem]] and travels throughout [[Food web|food webs]].<ref name="Worm"/><ref name="Ong"/>
 
Plastic pollution can afflict [[land]], [[Waterway|waterways]] and [[Ocean|oceans]]. It is estimated that 1.1 to 8.8''&nbsp;''million tonnes of plastic waste enters the ocean from coastal communities each year.<ref name="Science2015">{{Cite journal|last1=Jambeck|first1=Jenna R.|last2=Geyer|first2=Roland|last3=Wilcox|first3=Chris|last4=Siegler|first4=Theodore R.|last5=Perryman|first5=Miriam|last6=Andrady|first6=Anthony|last7=Narayan|first7=Ramani|last8=Law|first8=Kara Lavender|date=2015-02-13|title=Plastic waste inputs from land into the ocean|url=https://www.science.org/doi/abs/10.1126/science.1260352|journal=Science|volume=347|issue=6223|pages=768–771|language=EN|doi=10.1126/science.1260352|pmid=25678662|bibcode=2015Sci...347..768J|s2cid=206562155}}</ref> It is estimated that there is a stock of 86''&nbsp;''million tons of plastic [[marine debris]] in the worldwide ocean as of the end of 2013, with an assumption that 1.4% of global plastics produced from 1950 to 2013 has entered the ocean and has accumulated there.<ref name="kci.go.kr">Jang, Y. C., Lee, J., Hong, S., Choi, H. W., Shim, W. J., & Hong, S. Y. 2015. "Estimating the global inflow and stock of plastic marine debris using material flow analysis: a preliminary approach". ''Journal of the Korean Society for Marine Environment and Energy'', 18(4), 263–273.[https://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiOrteView.kci?sereArticleSearchBean.artiId=ART002050087]</ref> Global plastic production has surged from 1.5''&nbsp;''million tons in the 1950s to 335''&nbsp;''million tons in 2016, resulting in environmental concerns. A significant issue arises from the inefficient treatment of 79% of plastic products, leading to their release into landfills or natural environments.<ref>{{Cite journal |last1=Li |first1=Penghui |last2=Wang |first2=Xiaodan |last3=Su |first3=Min |last4=Zou |first4=Xiaoyan |last5=Duan |first5=Linlin |last6=Zhang |first6=Hongwu |date=2021-10-01 |title=Characteristics of Plastic Pollution in the Environment: A Review |url=https://doi.org/10.1007/s00128-020-02820-1 |journal=Bulletin of Environmental Contamination and Toxicology |language=en |volume=107 |issue=4 |pages=577–584 |doi=10.1007/s00128-020-02820-1 |pmid=32166334 |bibcode=2021BuECT.107..577L |s2cid=212681362 |issn=1432-0800}}</ref>
 
Some researchers suggest that by 2050 there could be more plastic than fish in the oceans by weight.<ref name="Sutter">{{cite web|last=Sutter|first=John D.|date=12 December 2016|title=How to stop the sixth mass extinction|url=http://www.cnn.com/2016/12/12/world/sutter-vanishing-help/|access-date=18 September 2017|work=CNN}}</ref> Living organisms, particularly [[Marine life|marine animals]], can be harmed either by mechanical effects such as entanglement in plastic objects, problems related to ingestion of plastic waste, or through exposure to chemicals within plastics that interfere with their [[physiology]]. Degraded plastic waste can directly affect humans through direct consumption (i.e. in tap water), indirect consumption (by eating plants and animals), and disruption of various [[hormone|hormonal]] mechanisms.<ref name="Ziani">{{cite journal |last1=Ziani |first1=K |last2=Ioniță-Mîndrican |first2=CB |last3=Mititelu |first3=M |last4=Neacșu |first4=SM |last5=Negrei |first5=C |last6=Moroșan |first6=E |last7=Drăgănescu |first7=D |last8=Preda |first8=OT |title=Microplastics: A Real Global Threat for Environment and Food Safety: A State of the Art Review. |journal=Nutrients |date=25 January 2023 |volume=15 |issue=3 |page=617 |doi=10.3390/nu15030617 |pmid=36771324 |pmc=9920460 |doi-access=free }}</ref>
<ref name="kci.go.kr">Jang, Y. C., Lee, J., Hong, S., Choi, H. W., Shim, W. J., & Hong, S. Y. 2015. "Estimating the global inflow and stock of plastic marine debris using material flow analysis: a preliminary approach". ''Journal of the Korean Society for Marine Environment and Energy'', 18(4), 263–273.[https://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiOrteView.kci?sereArticleSearchBean.artiId=ART002050087]</ref> Global plastic production has surged from 1.5''&nbsp;''million tons in the 1950s to 335''&nbsp;''million tons in 2016, resulting in environmental concerns. A significant issue arises from the inefficient treatment of 79% of plastic products, leading to their release into landfills or natural environments. <ref>{{Cite journal |last1=Li |first1=Penghui |last2=Wang |first2=Xiaodan |last3=Su |first3=Min |last4=Zou |first4=Xiaoyan |last5=Duan |first5=Linlin |last6=Zhang |first6=Hongwu |date=2021-10-01 |title=Characteristics of Plastic Pollution in the Environment: A Review |url=https://doi.org/10.1007/s00128-020-02820-1 |journal=Bulletin of Environmental Contamination and Toxicology |language=en |volume=107 |issue=4 |pages=577–584 |doi=10.1007/s00128-020-02820-1 |pmid=32166334 |bibcode=2021BuECT.107..577L |s2cid=212681362 |issn=1432-0800}}</ref>
 
Some researchers suggest that by 2050 there could be more plastic than fish in the oceans by weight.<ref name="Sutter">{{cite web|last=Sutter|first=John D.|date=12 December 2016|title=How to stop the sixth mass extinction|url=http://www.cnn.com/2016/12/12/world/sutter-vanishing-help/|access-date=18 September 2017|work=CNN}}</ref> Living organisms, particularly marine animals, can be harmed either by mechanical effects such as entanglement in plastic objects, problems related to ingestion of plastic waste, or through exposure to chemicals within plastics that interfere with their [[physiology]]. Degraded plastic waste can directly affect humans through direct consumption (i.e. in tap water), indirect consumption (by eating plants and animals), and disruption of various [[hormone|hormonal]] mechanisms.<ref name="Ziani">{{cite journal |last1=Ziani |first1=K |last2=Ioniță-Mîndrican |first2=CB |last3=Mititelu |first3=M |last4=Neacșu |first4=SM |last5=Negrei |first5=C |last6=Moroșan |first6=E |last7=Drăgănescu |first7=D |last8=Preda |first8=OT |title=Microplastics: A Real Global Threat for Environment and Food Safety: A State of the Art Review. |journal=Nutrients |date=25 January 2023 |volume=15 |issue=3 |page=617 |doi=10.3390/nu15030617 |pmid=36771324 |pmc=9920460 |doi-access=free }}</ref>
 
As of 2019, 368''&nbsp;''million tonnes of plastic is produced each year; 51% in Asia, where China is the world's largest producer.<ref>{{Cite web |url=https://www.plasticseurope.org/application/files/8016/1125/2189/AF_Plastics_the_facts-WEB-2020-ING_FINAL.pdf |title=Plastics – the Facts 2020 |access-date=6 October 2021 |archive-date=1 September 2021 |archive-url=https://web.archive.org/web/20210901235830/https://www.plasticseurope.org/application/files/8016/1125/2189/AF_Plastics_the_facts-WEB-2020-ING_FINAL.pdf |url-status=dead }}</ref> From the 1950s up to 2018, an estimated 6.3''&nbsp;''billion tonnes of plastic has been produced worldwide, of which an estimated 9% has been recycled and another 12% has been [[incinerated]].<ref name="economist.com">{{cite news |title=The known unknowns of plastic pollution |url=https://www.economist.com/news/international/21737498-so-far-it-seems-less-bad-other-kinds-pollution-about-which-less-fuss-made |access-date=17 June 2018 |newspaper=The Economist |date=3 March 2018}}</ref> This large amount of plastic waste enters the environment and causes problems throughout the ecosystem; for example, studies suggest that the bodies of 90% of seabirds contain plastic debris.<ref name=":16">{{cite web |url=https://globalnomadic.com/turning-rubbish-into-money-environmental-innovation-leads-the-way/|title=Turning rubbish into money – environmental innovation leads the way|first=Global|last=Nomadic|date=29 February 2016}}</ref><ref name="plasticizer" /> In some areas there have been significant efforts to reduce the prominence of free range plastic pollution, through reducing plastic consumption, litter cleanup, and promoting [[plastic recycling]].<ref>{{Cite journal | doi=10.1016/j.resconrec.2018.02.014|title = A call for Canada to move toward zero plastic waste by reducing and recycling single-use plastics| journal=Resources, Conservation and Recycling| volume=133| pages=99–100|year = 2018|last1 = Walker|first1 = Tony R.| last2=Xanthos| first2=Dirk|s2cid = 117378637}}</ref><ref name=":17">{{cite web |url=https://www.unenvironment.org/news-and-stories/story/picking-litter-pointless-exercise-or-powerful-tool-battle-beat-plastic |title=Picking up litter: Pointless exercise or powerful tool in the battle to beat plastic pollution? |author=<!--Not stated-->|date=18 May 2018 |website=unenvironment.org |access-date=19 July 2019}}</ref>
 
As of 2020, the global mass of produced plastic exceeds the [[Biomass (ecology)|biomass]] of all land and marine animals combined.<ref>{{cite news |last=Laville |first=Sandra |date=December 9, 2020 |title=Human-made materials now outweigh Earth's entire biomass – study |work=The Guardian |url=https://www.theguardian.com/environment/2020/dec/09/human-made-materials-now-outweigh-earths-entire-biomass-study |access-date=December 9, 2020}}</ref> A May 2019 amendment to the [[Basel Convention]] regulates the exportation/importation of plastic waste, largely intended to prevent the shipping of plastic waste from [[developed countries]] to [[developing countries]]. Nearly all countries have joined this agreement.<ref name="nationalgeographic.com">National Geographic, 30 Oct. 2020, [https://web.archive.org/web/20210220014137/https://www.nationalgeographic.com/environment/article/us-plastic-pollution "U.S. Generates More Plastic Trash than Any Other Nation, Report Finds: The Plastic Pollution Crisis Has Been Widely Blamed on a Handful of Asian Countries, But New Research Shows Just How Much the U.S. Contributes"]</ref><ref>UN Environment Programme, 12 May 2019 [https://www.unep.org/news-and-stories/press-release/governments-agree-landmark-decisions-protect-people-and-planet "Governments Agree Landmark Decisions to Protect People and Planet from Hazardous Chemicals and Waste, Including Plastic Waste"]</ref><ref>The Guardian, 10 May 2019, [https://www.theguardian.com/environment/2019/may/10/nearly-all-the-worlds-countries-sign-plastic-waste-deal-except-us "Nearly All Countries Agree to Stem Flow of Plastic Waste into Poor Nations: US Reportedly Opposed Deal, which Follows Concerns that Villages in Indonesia, Thailand and Malaysia Had ‘Turned into Dumpsites’"]</ref><ref>Phys.org, 10 May 2019 [https://phys.org/news/2019-05-nations-export-plastic.html "180 Nations Agree UN Deal to Regulate Export of Plastic Waste"]</ref> On 2 March 2022, in Nairobi, 175 countries pledged to create a legally binding agreement by the end of the year 2024 with a goal to end plastic pollution.<ref name="unep.org">{{cite web |title=Historic day in the campaign to beat plastic pollution: Nations commit to develop a legally binding agreement |url=https://www.unep.org/news-and-stories/press-release/historic-day-campaign-beat-plastic-pollution-nations-commit-develop |website=UN Environment Programme (UNEP) |date=2 March 2022 |access-date=11 March 2022}}</ref>
 
The amount of plastic waste produced increased during the [[COVID-19 pandemic]] due to increased demand for [[Personal protective equipment|protective equipment]] and packaging materials.<ref>{{Cite journal |last1=Shams |first1=Mehnaz |last2=Alam |first2=Iftaykhairul |last3=Mahbub |first3=Md Shahriar |date=October 2021 |title=Plastic pollution during COVID-19: Plastic waste directives and its long-term impact on the environment |journal=Environmental Advances |volume=5 |pages=100119 |doi=10.1016/j.envadv.2021.100119 |issn=2666-7657 |pmc=8464355 |pmid=34604829|bibcode=2021EnvAd...500119S }}</ref> Higher amounts of plastic ended up in the ocean, especially plastic from medical waste and masks.<ref>{{Cite journal |last=Ana |first=Silva |year=2021 |title=Increased Plastic Pollution Due to Covid-19 Pandemic: Challenges and Recommendations. |journal=Chemical Engineering Journal |volume=405 |page=126683 |doi=10.1016/j.cej.2020.126683 |pmc=7430241 |pmid=32834764|bibcode=2021ChEnJ.40526683P }}</ref><ref name="Euronews Bubble Barrier" /> Several news reports point to a plastic industry trying to take advantage of the health concerns and desire for [[Disposable product|disposable]] masks and packaging to increase production of single use plastic.<ref>{{Cite web |date=2020-03-13 |title=Plastics industry adapts to business during COVID-19 |url=https://www.plasticsnews.com/news/plastics-industry-adapts-business-during-covid-19 |access-date=2021-12-18 |website=Plastics News |language=en}}</ref><ref>{{Cite web |title=Plastic in the time of a pandemic: protector or polluter? |url=https://www.weforum.org/agenda/2020/05/plastic-pollution-waste-pandemic-covid19-coronavirus-recycling-sustainability/ |access-date=2021-12-18 |website=World Economic Forum |date=6 May 2020 |language=en}}</ref><ref>{{Cite web |last=Monella |first=Lillo Montalto |date=2020-05-12 |title=Will plastic pollution get worse after the COVID-19 pandemic? |url=https://www.euronews.com/2020/05/12/will-plastic-pollution-get-worse-after-the-covid-19-pandemic |access-date=2021-12-18 |website=euronews |language=en}}</ref><ref>{{Cite web |last=Westervelt |first=Amy |author-link=Amy Westervelt|date=2020-01-14 |title=Big Oil Bets Big on Plastic |url=https://drillednews.com/big-oil-bets-big-on-plastic/ |access-date=2021-12-18 |website=Drilled News |language=en-US |archive-date=18 December 2021 |archive-url=https://web.archive.org/web/20211218161024/https://drillednews.com/big-oil-bets-big-on-plastic/ |url-status=dead }}</ref>
 
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[[File:Decomposition rates of marine debris items, OWID.svg|thumb|Average estimated decomposition times of typical marine debris items. Plastic items are shown in blue.]]
{{Main|Polymer degradation}}
Plastics themselves contribute to approximately 10% of discarded waste. Many kinds of plastics exist depending on their precursors and the method for their [[polymerization]]. Depending on their chemical composition, plastics and resins have varying properties related to contaminant [[Absorption (chemistry)|absorption]] and [[adsorption]]. [[Polymer degradation]] takes much longer as a result of [[Saline water|saline]] environments and the cooling effect of the sea. These factors contribute to the persistence of plastic debris in certain environments.<ref name="Barnes" /> Recent studies have shown that plastics in the ocean decompose faster than was once thought, due to exposure to sun, rain, and other environmental conditions, resulting in the release of toxic chemicals such as [[bisphenol A]]. However, due to the increased volume of plastics in the ocean, decomposition has slowed down.<ref name="ScienceDaily">{{cite web |last1=Chemical Society|first1=American|title=Plastics in Oceans Decompose, Release Hazardous Chemicals, Surprising New Study Says|url=https://www.sciencedaily.com/releases/2009/08/090819234651.htm|website=Science Daily|access-date=15 March 2015}}</ref> The Marine[[Ocean Conservancy]] has predicted the decomposition rates of several plastic products. It is estimated that a foam [[plastic cup]] will take 50 years, a plastic beverage holder will take 400 years, a [[disposable nappy]] will take 450 years, and [[fishing line]] will take 600 years to degrade.<ref name="Plastic Pollution" />
 
=== Persistent organic pollutants ===
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==== Plastic pollution as a cause of climate change ====
In 2019 a new report "Plastic and Climate" was published. According to the report, in 2019, production and incineration of plastic will contribute [[greenhouse gas]]es in the equivalent of 850''&nbsp;''million tonnes of [[carbon dioxide]] ({{CO2}}) to the atmosphere. In current trend, annual emissions from these sources will grow to 1.34''&nbsp;''billion tonnes by 2030. By 2050 plastic could emit 56''&nbsp;''billion tonnes of [[greenhouse]] gas emissions, as much as 14 percent of the earth's remaining [[carbon budget]].<ref>{{cite web |title=Sweeping New Report on Global Environmental Impact of Plastics Reveals Severe Damage to Climate |url=https://www.ciel.org/news/plasticandclimate/ |website=Center for International Environmental Law (CIEL) |access-date=16 May 2019}}</ref> By 2100 it will emit 260''&nbsp;''billion tonnes, more than half of the carbon budget. Those are emission from production, transportation, incineration, but there are also releases of [[methane]] and effects on [[phytoplankton]].<ref>{{cite book |title=Plastic & Climate: The Hidden Costs of a Plastic Planet |date=May 2019 |url=https://www.ciel.org/wp-content/uploads/2019/05/Plastic-and-Climate-Executive-Summary-2019.pdf |access-date=28 May 2019}}</ref>
 
The emissions of methane from plastic decomposition and impact on phytoplankton, were still not known well when the report was released. According to one estimate, plastic floating in the ocean can emit annually 76 Mt methane equal to 2,129 Mt CO2e, based on the 100 years [[global warming potential]] of methane. But these numbers are very preliminary. From one side, it can be an overestimate as it is based on the emissions of LDPE in powder form, the most emission intensive type of plastic in this case and in tropical water where intense radiation increases decomposition. But from the other side it can be an underestimate, as it is not including the decomposition of plastic on land which is probably more emission intensive, the effects on phytoplankton which can be significant, the emissions from submerged plastic. Therefore, the authors prefer to not include them in the official estimate, but to write them in the full report, as a base for further discussion noting the high importance of the problem.<ref>{{cite book |title=Plastic & Climate The Hidden Costs of a Plastic Planet |date=2019 |publisher=Center for International Environmental Law (CIEL), Environmental Integrity Project (EIP), FracTracker Alliance, Global Alliance for Incinerator Alternatives (GAIA), 5Gyres, Break free from plastic |pages=69–77 |url=https://www.ciel.org/wp-content/uploads/2019/05/Plastic-and-Climate-FINAL-2019.pdf |access-date=7 February 2024}}</ref>
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A 2017 study found that 83% of tap water samples taken around the world contained plastic pollutants.<ref name=":1">{{Cite web|url=https://orbmedia.org/stories/Invisibles_plastics|title=Invisibles|website=orbmedia.org|access-date=15 September 2017|archive-date=6 September 2017|archive-url=https://web.archive.org/web/20170906172409/https://orbmedia.org/stories/Invisibles_plastics|url-status=dead}}</ref><ref>{{Cite web|url=https://orbmedia.org/stories/Invisibles_final_report|title=Synthetic Polymer Contamination in Global Drinking Water|website=orbmedia.org|access-date=19 September 2017}}</ref> This was the first study to focus on global [[Water quality|drinking water pollution]] with plastics,<ref name=":2">{{Cite news|url=https://phys.org/news/2017-09-plastic.html|title=Your tap water may contain plastic, researchers warn (Update)|access-date=15 September 2017}}</ref> and showed that with a contamination rate of 94%, tap water in the [[United States]] was the most polluted, followed by [[Lebanon]] and [[India]]. European countries such as the [[United Kingdom]], [[Germany]] and [[France]] had the lowest contamination rate, though still as high as 72%.<ref name=":1" /> This means that people may be ingesting between 3,000 and 4,000 [[microparticle]]s of plastic from tap water per year.<ref name=":2" /> The analysis found particles of more than 2.5 microns in size, which is 2500 times bigger than a [[nanometer]]. It is currently unclear if this contamination is affecting human health, but if the water is also found to contain nano-particle pollutants, there could be adverse impacts on human well-being, according to scientists associated with the study.<ref>{{Cite news|url=https://www.theguardian.com/environment/2017/sep/06/plastic-fibres-found-tap-water-around-world-study-reveals|title=Plastic fibres found in tap water around the world, study reveals |first=Damian |last=Carrington |date=5 September 2017|work=The Guardian|access-date=15 September 2017|language=en-GB|issn=0261-3077}}</ref>
 
However, plastic tap water pollution remains under-studied, as are the links of how pollution transfers between humans, air, water, and soil.<ref>{{Cite magazine|url=httphttps://time.com/4928759/plastic-fiber-tap-water-study/|title=Plastic Fibers Are Found in '83% of the World's Tap Water'|last=Lui|first=Kevin|magazine=Time|access-date=15 September 2017}}</ref>
 
==== In terrestrial ecosystems ====
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=== Effects on freshwater ecosystems ===
Research into freshwater plastic pollution has been largely ignored over marine ecosystems, comprising only 13% of published papers on the topic.<ref>{{Cite journal |last1=Blettler |first1=Martín C.M. |last2=Abrial |first2=Elie |last3=Khan |first3=Farhan R. |last4=Sivri |first4=Nuket |last5=Espinola |first5=Luis A. |date=2018 |title=Freshwater plastic pollution: Recognizing research biases and identifying knowledge gaps |url=https://linkinghub.elsevier.com/retrieve/pii/S0043135418304597 |journal=Water Research |language=en |volume=143 |pages=416–424 |doi=10.1016/j.watres.2018.06.015|pmid=29986250 |bibcode=2018WatRe.143..416B |s2cid=51617474 |hdl=11336/88691 |hdl-access=free }}</ref>
 
Plastics make their way into bodies of freshwater, underground aquifers, and moving freshwaters through runoff and erosion of mismanaged plastic waste (MMPW). In some areas, the direct waste disposal into rivers is a remaining factor of historical practices, and has only been somewhat limited by modern legislation.<ref name=":04">{{Cite journal |last1=Azevedo-Santos |first1=Valter M. |last2=Brito |first2=Marcelo F. G. |last3=Manoel |first3=Pedro S. |last4=Perroca |first4=Júlia F. |last5=Rodrigues-Filho |first5=Jorge Luiz |last6=Paschoal |first6=Lucas R. P. |last7=Gonçalves |first7=Geslaine R. L. |last8=Wolf |first8=Milena R. |last9=Blettler |first9=Martín C. M. |last10=Andrade |first10=Marcelo C. |last11=Nobile |first11=André B. |date=2021 |title=Plastic pollution: A focus on freshwater biodiversity |journal=Ambio |language=en |volume=50 |issue=7 |pages=1313–1324 |doi=10.1007/s13280-020-01496-5 |issn=0044-7447 |pmc=8116388 |pmid=33543362|bibcode=2021Ambio..50.1313A }}</ref> Rivers are the primary transport of plastics into marine ecosystems, sourcing potentially 80% of the plastic pollution in the oceans.<ref>{{Cite journal |last1=Winton |first1=Debbie J. |last2=Anderson |first2=Lucy G. |last3=Rocliffe |first3=Stephen |last4=Loiselle |first4=Steven |date=2020 |title=Macroplastic pollution in freshwater environments: Focusing public and policy action |journal=Science of the Total Environment |language=en |volume=704 |pages=135242 |doi=10.1016/j.scitotenv.2019.135242|pmid=31812404 |bibcode=2020ScTEn.704m5242W |s2cid=208955699 |doi-access=free |hdl=11365/1128793 |hdl-access=free }}</ref><ref name="Ritchie">{{cite journal |last1=Ritchie |first1=Hannah |last2=Roser |first2=Max |title=Where does the plastic in our oceans come from? |url=https://ourworldindata.org/ocean-plastics |journal=Our World in Data |date=May 1, 2021 |access-date=30 April 2024}}</ref> Research on the top ten river catchments ranked by annual amount of MMPW showed that some rivers contribute as high as 88–95% of ocean-bound plastics, the highest being the [[Yangtze]] River into the East China Sea.<ref name="10.1021/acs.est.7b02368">{{Cite journal |last1=Schmidt |first1=Christian |last2=Krauth |first2=Tobias |last3=Wagner |first3=Stephan |date=2017-11-07 |title=Export of Plastic Debris by Rivers into the Sea |url=https://pubs.acs.org/doi/10.1021/acs.est.7b02368 |journal=Environmental Science & Technology |language=en |volume=51 |issue=21 |pages=12246–12253 |doi=10.1021/acs.est.7b02368 |pmid=29019247 |bibcode=2017EnST...5112246S |issn=0013-936X}}</ref> Asian rivers contribute nearly 67% of plastic waste found in the ocean annually, largely influenced by the high density coastal populations all throughout the continent as well as relatively intense bouts of seasonal rainfall.<ref>{{Cite journal |last1=Lebreton |first1=Laurent C. M. |last2=van der Zwet |first2=Joost |last3=Damsteeg |first3=Jan-Willem |last4=Slat |first4=Boyan |last5=Andrady |first5=Anthony |last6=Reisser |first6=Julia |date=2017 |title=River plastic emissions to the world's oceans |journal=Nature Communications |language=en |volume=8 |issue=1 |pages=15611 |doi=10.1038/ncomms15611 |pmid=28589961 |pmc=5467230 |bibcode=2017NatCo...815611L |issn=2041-1723}}</ref>
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=== Effects on humans ===
[[File:Refuse Recycling site.jpg|thumb|The site where the refuse is being recycled in Ghana]]
Compounds that are used in manufacturing pollute the environment by releasing chemicals into the air and water. Some compounds that are used in plastics, such as phthalates, bisphenol A (BRABPA), polybrominated diphenyl ether (PBDE), are under close statute and might be very hurtfulharmful. Even though these compounds are unsafe, they have been used in the manufacturing of [[food packaging]], medical devices, flooring materials, bottles, perfumes, cosmetics and much more. Inhalation of microplastics (MPs) have been shown to be one of the major contributors to MP uptake in humans. MPs in the form of dust particles are circulated constantly through ventilation and air conditioning systems indoors.<ref name=":05">{{Cite journal |last1=Kannan |first1=Kurunthachalam |last2=Vimalkumar |first2=Krishnamoorthi |date=2021-08-18 |title=A Review of Human Exposure to Microplastics and Insights Into Microplastics as Obesogens |journal=Frontiers in Endocrinology |volume=12 |page=724989 |doi=10.3389/fendo.2021.724989 |pmid=34484127 |pmc=8416353 |issn=1664-2392|doi-access=free }}</ref> The large dosage of these compounds are hazardous to humans, destroying the endocrine system. BRABPA imitates the female's hormone called estrogen. PBD destroys and causes damage to thyroid hormones, which are vital hormone glands that play a major role in the metabolism, growth and development of the human body. MPs can also have a detrimental effect on male reproductive success. MPs such as BPA can interfere with [[Steroid|steroid biosynthesis]] in the male endocrine system and with early stages of [[spermatogenesis]].<ref name=":13">{{Cite journal |last1=D'Angelo |first1=Stefania |last2=Meccariello |first2=Rosaria |date=2021-03-01 |title=Microplastics: A Threat for Male Fertility |journal=International Journal of Environmental Research and Public Health |volume=18 |issue=5 |pages=2392 |doi=10.3390/ijerph18052392 |pmid=33804513 |pmc=7967748 |issn=1660-4601|doi-access=free }}</ref> MPs in men can also create [[oxidative stress]] and DNA damage in spermatozoa, causing reduced sperm viability.<ref name=":13" /> Although the level of exposure to these chemicals varies depending on age and geography, most humans experience simultaneous exposure to many of these chemicals. Average levels of daily exposure are below the levels deemed to be unsafe, but more research needs to be done on the effects of low dose exposure on humans. A lot is unknown on how severely humans are physically affected by these chemicals. Some of the chemicals used in plastic production can cause [[dermatitis]] upon contact with human skin. In many plastics, these toxic chemicals are only used in trace amounts, but significant testing is often required to ensure that the toxic elements are contained within the plastic by inert material or polymer. Children and women during their reproduction age are at most at risk and more prone to damaging their immune as well as their reproductive system from these hormone-disrupting chemicals. Pregnancy and nursing products such as baby bottles, pacifiers, and plastic feeding utensils place infants and children at a very high risk of exposure.<ref name=":05" />
 
Human health has also been negatively impacted by plastic pollution. "Almost a third of groundwater sites in the US contain BPA. BPA is harmful at very low concentrations as it interferes with our hormone and reproductive systems.<ref>{{Cite web|date=February 20, 2019|title=Report: Plastic Threatens Human Health at a Global Scale|url=https://www.plasticpollutioncoalition.org/blog/2019/2/20/report-plastic-threatens-human-health-at-a-global-scale.|access-date=December 14, 2021|website=Plastic Pollution Coalition}}</ref> This quote tells us how much of a percentage of our water is contaminated and should not be drunk on a daily basis. "At every stage of its lifecycle, plastic poses distinct risks to human health, arising from both exposure to plastic particles themselves and associated chemicals".<ref>{{Cite web|title=Ocean Plastics Pollution.|url=http://www.biologicaldiversity.org/campaigns/ocean_plastics/index.html|archive-url=https://web.archive.org/web/20120825233910/http://www.biologicaldiversity.org/campaigns/ocean_plastics/index.html|url-status=dead|archive-date=25 August 2012|access-date=17 May 2019|website=Center for Biological Diversity}}</ref> This quote is an intro to numerous points of why plastic is damaging to us, such as the carbon that is released when it is being made and transported which is also related to how plastic pollution harms our environment.
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===== Sex hormones =====
BPA can disrupt normal, physiological levels of [[sex hormone]]s. It does this by binding to [[globulin]]s that normally bind to sex hormones such as [[androgen]]s and [[estrogen]]s, leading to the disruption of the balance between the two. BPA can also affect the [[metabolism]] or the [[catabolism]] of sex hormones. It often acts as an [[antiandrogen]] or as an estrogen, which can cause disruptions in gonadal development and sperm production.<ref name="plasticizer" />
 
===== Carotid arteries =====
A recent research found that approximately 58% of patients who underwent [[vascular surgery]] for clogged blood vessels were patients with invisible plastic nano particles in their [[common carotid artery|carotid arteries]], blocking the blood supply to the brain and neck. The researchers also found that the blood vessels of those with plastic were inflamed, thus putting them at risk of [[heart attacks]], [[strokes]], and death.
Another research found that amounts of [[polyethylene]] were found in the plaque tissues of 150 people who underwent [[carotid endarterectomy]].<ref>{{Cite web |date=7 March 2024 |title=Nanoplastics linked to heart attack, stroke and early death, study finds |url=https://edition.cnn.com/2024/03/06/health/nanoplastics-heart-attack-study-wellness/index.html |website=CNN Health}}</ref><ref>{{Cite web |date=8 March 2024 |title=Can plastic pollution damage our heart health? Study shows microplastics raises heart attack risk |url=https://www.euronews.com/health/2024/03/08/can-plastic-pollution-damage-our-heart-health-study-shows-microplastics-raises-heart-attac |website=Euronews}}</ref>
 
===== Breast milk =====
A study in 2022 showed that plastic particles were identified in the breast milk of 77% of the sample of healthy mothers. The researchers were concerned with plastic particles jeopardizing the infants’ health during lactation. The Mothers’ consumption of food and drink in plastic packaging and the use of plastic-containing personal hygiene products was recorded. The results showed absence of microplastics, thus scientists considered the omnipresence of microplastics in the environment and the inevitability of them entering the body.<ref>{{Cite web |date=7 October 2022 |title=Microplastics found in human breast milk for the first time |url=https://www.theguardian.com/environment/2022/oct/07/microplastics-human-breast-milk-first-time |website=[[The Guardian]]}}</ref>
 
=== Disease ===
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In January 2019 a "Global [[Alliance to End Plastic Waste]]" was created by companies in the plastics industry. The alliance aims to clean the environment from existing waste and increase recycling, but it does not mention reduction in plastic production as one of its targets.<ref>{{cite web |last1=Staff |first1=Waste360 |title=New Global Alliance to End Plastic Waste Has Launched |url=https://www.waste360.com/plastics/new-global-alliance-end-plastic-waste-has-launched |website=Waste360 |access-date=18 January 2019|date=16 January 2019 }}</ref> Moreover, subsequent reporting has suggested the group is a [[greenwashing]] initiative.<ref>{{Cite news |title=Inside Big Plastic's Faltering $1.5 Billion Global Cleanup Effort |language=en |work=Bloomberg.com |url=https://www.bloomberg.com/features/2022-exxon-mobil-plastic-waste-cleanup-greenwashing/ |access-date=2023-02-22}}</ref><ref name="cite2">{{cite web |author=<!--Not stated--> |date=August 2022 |title=Alliance to End Plastic Waste: Barely Credible |url=https://planet-tracker.org/wp-content/uploads/2022/08/AEPW.pdf |website=planet-tracker.org/}}</ref><ref name="Ciitc1">{{cite web |title='It's a pipe dream': Green groups blast plastic makers' recycling push |url=https://www.msn.com/en-us/money/other/it-s-a-pipe-dream-green-groups-blast-plastic-makers-recycling-push/ar-BB1eXlDl |website=www.msn.com}}</ref>
 
On 2 March 2022 in Nairobi, representatives of 175 countries pledged to create a legally binding agreement to end plastic pollution. The agreement should address the full lifecycle of plastic and propose alternatives including [[reusability]]. An Intergovernmental Negotiating Committee (INC) that should conceive the agreement by the end of the year 2024 was created. The agreement should facilitate the transition to a circular economy, which will reduce GHG emissions by 25%. Inger Andersen, executive director of UNEP called the decision "a triumph by planet earth over single-use plastics".<ref name="unep.org"/><ref>{{cite web |title=End plastic pollution: Towards an international legally binding instrument* |url=https://wedocs.unep.org/bitstream/handle/20.500.11822/38522/k2200647_-_unep-ea-5-l-23-rev-1_-_advance.pdf?sequence=1&isAllowed=y |website=United Nations Environmental Programm |access-date=13 March 2022}}</ref>
 
Around 100 countries implemented single use plastic bags bans or taxes, which successfully reduced pollution and had public support. Many implemented measures to reduce the use of "single use cutlery, straws, balloon sticks, and coffee buds".<ref>{{cite news |title='Really encouraging': Plastic bag bans work, say campaigners. Where is Europe lagging behind? |url=https://www.euronews.com/green/2023/04/05/really-encouraging-plastic-bag-bans-work-say-campaigners-where-is-europe-lagging-behind |access-date=7 February 2024 |agency=Euronews |date=5 April 2023}}</ref>
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{{See also|Category:Organisms breaking down plastic}}
Also worth noting is the evolution of new enzymes allowing microorganisms living in polluted locations to digest normal, hard-to-degrade plastic.<ref name="Ong">{{cite journal |last1=Ong |first1=Sandy |title=The living things that feast on plastic |journal=Knowable Magazine {{!}} Annual Reviews |date=24 August 2023 |doi=10.1146/knowable-082423-1|doi-access=free |url=https://knowablemagazine.org/article/food-environment/2023/how-to-recycle-plastic-with-enzymes}}</ref> AnA 2021 study looking for [[homologs]] of 95 known plastic-degrading enzymes spanning 17 plastic types found a further 30,000 possible enzymes. Despite their apparent ubiquity, there is no current evidence that these novel enzymes are breaking down any meaningful amount of plastic to reduce pollution.<ref>{{cite web |title=Bugs across globe are evolving to eat plastic, study finds |url=https://www.theguardian.com/environment/2021/dec/14/bugs-across-globe-are-evolving-to-eat-plastic-study-finds |website=The Guardian |language=en |date=14 December 2021}}</ref>
 
=== Incineration ===
Up to 60% of used plastic medical equipment is incinerated rather than deposited in a landfill as a precautionary measure to lessen the transmission of disease. This has allowed for a large decrease in the amount of plastic waste that stems from medical equipment.<ref name="plastics environ health" />
 
At a large scale, plastics, paper, and other materials provides [[waste-to-energy]] plants with useful fuel. About 12% of total produced plastic has been incinerated.<ref>{{Cite web|title=Our planet is drowning in plastic pollution. This World Environment Day, it's time for a change|url=https://www.unep.org/interactive/beat-plastic-pollution/#:~:text=Because%20right%20now,%20a%20lot,dumps%20or%20the%20natural%20environment.|access-date=2021-03-27|website=www.unep.org}}</ref> Many studies have been done concerning the [[incineration#Gaseous emissions|gaseous emissions]] that result from the incineration process.<ref name=":4">{{Cite journal|date=2016-01-01|title=Toxic Pollutants from Plastic Waste – A Review|journal=Procedia Environmental Sciences|language=en|volume=35|pages=701–708|doi=10.1016/j.proenv.2016.07.069|issn=1878-0296|doi-access=free|last1=Verma|first1=Rinku|last2=Vinoda|first2=K.S.|last3=Papireddy|first3=M.|last4=Gowda|first4=A.N.S.}}</ref> Incinerated plastics release a number of toxins in the burning process, including [[dioxin]]s, [[furan]]s, [[Mercury (element)|mercury]] and [[Polychlorinatedpolychlorinated biphenyl|polychlorinated biphenyls]]s.<ref name=":4" /> When burned outside of facilities designed to collect or process the toxins, this can have significant health effects and create significant air pollution.<ref name=":4" />
 
=== Policy ===
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The export of plastic waste from rich countries to poorer countries has been well documented.
Differences between countries in environmental policy and costs relating to taxes, disposal, and transport, are important determinants on legal and illegal international traffic in hazardous and nonhazardousnon[[hazardous waste]] and scrap products, including plastics.<ref name="Benson">{{cite news |last1=Benson |first1=Emily |last2=Mortensen |first2=Sarah |title=The Basel Convention: From Hazardous Waste to Plastic Pollution |url=https://www.csis.org/analysis/basel-convention-hazardous-waste-plastic-pollution |date=7 October 2021 |language=en}}</ref><ref name="Kellenberg">{{cite journal |last1=Kellenberg |first1=Derek |title=The Economics of the International Trade of Waste |journal=Annual Review of Resource Economics |date=1 October 2015 |volume=7 |issue=1 |pages=109–125 |doi=10.1146/annurev-resource-100913-012639 |s2cid=155009941 |url=https://www.annualreviews.org/doi/full/10.1146/annurev-resource-100913-012639 |language=en |issn=1941-1340}}</ref>
 
There have been several international covenants which address marine plastic pollution, such as the [[London Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter|Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter 1972]], the [[MARPOL 73/78|International Convention for the Prevention of Pollution from Ships, 1973]] and the Honolulu Strategy, there is nothing around plastics which infiltrate the ocean from the land.<ref name="Farrelly">{{Cite journal |last1=Farrelly |first1=Trisia |author-link=Trisia Farrelly |last2=Green |first2=Laura |date=2020-05-11 |title=The Global Plastic Pollution Crisis: how should New Zealand respond? |url=https://ojs.victoria.ac.nz/pq/article/view/6484 |journal=Policy Quarterly |language=en |volume=16 |issue=2 |doi=10.26686/pq.v16i2.6484 |issn=2324-1101 |doi-access=free}}</ref><ref>{{cite web |title=The Honolulu Strategy |url=https://www.unep.org/resources/report/honolulu-strategy |website=UNEP - UN Environment Programme |language=en |date=31 August 2017}}</ref>
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== Obstruction by major plastic producers ==
[[File:Surgical mask in dry grass at Brädgårdsvägen in Brastad.jpg|thumb|[[Face masks during the COVID-19 pandemic|Surgical mask]] among dry grass in [[Brastad]] during the COVID-19 pandemic]]
The ten corporations that produce the most plastic on the planet, [[The Coca-Cola Company]], [[Colgate-Palmolive]], [[Danone]], [[Mars, Incorporated]], [[Mondelēz International]], [[Nestlé]], [[PepsiCo]], [[Perfetti Van Melle]], [[Procter & Gamble]], and [[Unilever]], formed a well-financed network that has sabotaged for decades government and community efforts to address the plastic pollution crisis, according to a detailed investigative report by the Changing Markets Foundation. The investigation documents how these companies delay and derail legislation so that they can continue to inundate consumers with disposable plastic packaging. These large plastic producers have exploited public fears of the [[COVID-19 pandemic]] to work toward delaying and reversing existing regulation of plastic disposal. Big ten plastic producers have advanced voluntary commitments for plastic waste disposal as a stratagem to deter governments from imposing additional regulations.<ref>Changing Markets Foundation, 17 Sept. 2020, [http://changingmarkets.org/wp-content/uploads/2020/09/Talking-Trash-FINAL.pdf "Ground-Breaking Report Reveals Hypocrisy of World’s Biggest Plastic Polluters: ‘Talking Trash’ Exposes How Big Plastic Has Obstructed and Undermined Proven Legislative Solutions to The Crisis for Decades"]</ref>
 
PepsiCo faced legal action on 15 November 2023, as the New York attorney general filed a lawsuit. The allegations asserted that the food and beverage giant jeopardized the environment and disseminated deceptive information about its dedication to reducing single-use plastic in packaging. Moreover, a substantial portion of the plastic pollution along the Buffalo River was linked to products manufactured by the company.<ref>{{Cite news |last=Nerkar |first=Santul |date=2023-11-15 |title=New York Attorney General Sues Pepsi Over Plastic Packaging |language=en-US |work=The New York Times |url=https://www.nytimes.com/2023/11/15/business/pepsi-plastic-recycling-lawsuit.html |access-date=2023-11-19 |issn=0362-4331}}</ref>
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* [[Burning]]
* [[Eddy pumping]] – The role of mesoscale eddies in trapping and transporting plastic in the ocean
* [[Great Pacific garbageGarbage patchPatch]] – an area with concentrations of pelagic plastics, chemical sludge, and other debris
* [[Plastic-eating organisms]]
* [[Marine plastic pollution]]
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* [https://www.rollingstone.com/culture/culture-features/plastic-problem-recycling-myth-big-oil-950957/ Planet Plastic: How Big Oil and Big Soda kept a global environmental calamity a secret for decades]. ''Rolling Stone''. 3 March 2020.
* [https://www.bbc.com/news/world-us-canada-55006333 Plastics an 'unfolding disaster' for US marine life]. BBC, 19 November 2020.
* [[Elizabeth Kolbert]], "A Trillion Little Pieces: How [[plastics]] are [[poison]]ing us", ''[[The New Yorker]]'', 3 July 2023, pp. &nbsp;24–27. "If much of contemporary life is wrapped up in plastic, and the result of this is that we are poisoning our kids, ourselves, and our [[ecosystem]]s, then contemporary life may need to be rethought." (p. &nbsp;27.)
 
== External links ==