Microplastics pollution and reduction strategies

Abstract

Microplastic particles smaller than 5 mm in size are of increasing concern, especially in aquatic environments, such as the ocean. Primary source is microbeads (<1 mm) used in cosmetics and cleaning agents and fiber fragments from washing of clothes, and secondary source such as broken down plastic litter and debris. These particles are mostly made from polyethylene (PE), polypropylene (PP), polystyrene (PS), polyethylene terephthalate (PET) and polyesters. They are ingested by diverse marine fauna, including zooplanktons, mussel, oyster, shrimp, fish etc. and can enter human food chains via several pathways. Strategy for control of microplastics pollution should primarily focus on source reduction and subsequently on the development of cost-effective clean up and remediation technologies. Recent research results on biodegradation of plastics have revealed a potential for microbial biodegradation and bioremediation of plastic pollutants, such as PE, PS and PET under appropriate conditions.

Keywords

microplastics / plastic microbeads / environmental pollution / biodegradation

References

[1] Jambeck J R, Geyer R, Wilcox C, Siegler T R, Perryman M, Andrady A, Narayan R, Law K L. Plastic waste inputs from land into the ocean. Science, 2015, 347(6223): 768–771

[2] Cµzar A, Echevarría F, González-Gordillo J I, Irigoien X, Úbeda B, Hernández-León S, Palma Á T, Navarro S, García-de-Lomas J, Ruiz A, Fernández-de-Puelles M L, Duarte C M. Plastic debris in the open ocean. Proceedings of the National Academy of Sciences of the United States of America, 2014, 111(28): 10239–10244

[3] Cole M, Lindeque P, Halsband C, Galloway T S. Microplastics as contaminants in the marine environment: a review. Marine Pollution Bulletin, 2011, 62(12): 2588–2597

[4] Zhao S, Zhu L, Wang T, Li D. Suspended microplastics in the surface water of the Yangtze Estuary System, China: first observations on occurrence, distribution. Marine Pollution Bulletin, 2014, 86(1-2): 562–568

[5] Fendall L S, Sewell M A. Contributing to marine pollution by washing your face: microplastics in facial cleansers. Marine Pollution Bulletin, 2009, 58(8): 1225–1228

[6] Andrady A L. Microplastics in the marine environment. Marine Pollution Bulletin, 2011, 62(8): 1596–1605

[7] Tokiwa Y, Calabia B P, Ugwu C U, Aiba S. Biodegradability of plastics. International Journal of Molecular Sciences, 2009, 10(9): 3722–3742

[8] Yang J, Yang Y, Wu W M, Zhao J, Jiang L. Evidence of polyethylene biodegradation by bacterial strains from the guts of plastic-eating waxworms. Environmental Science & Technology, 2014, 48(23): 13776–13784

[9] Yang Y, Yang J, Wu W M, Zhao J, Song Y, Gao L, Yang R, Jiang L. Biodegradation and mineralization of polystyrene by plastic-eating mealworms: Part 2. Role of gut Microorganisms. Environmental Science & Technology, 2015, 49(20): 12087–12093

[10] Yoshida S, Hiraga K, Takehana T, Taniguchi I, Yamaji H, Maeda Y, Toyohara K, Miyamoto K, Kimura Y, Oda K. A bacterium that degrades and assimilates poly(ethylene terephthalate). Science, 2016, 351(6278): 1196–1199

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Higher Education Press and Springer-Verlag Berlin Heidelberg