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Review
. 2021 Jun 1:771:144719.
doi: 10.1016/j.scitotenv.2020.144719. Epub 2021 Jan 21.

Degradation of conventional plastic wastes in the environment: A review on current status of knowledge and future perspectives of disposal

Affiliations
Review

Degradation of conventional plastic wastes in the environment: A review on current status of knowledge and future perspectives of disposal

Sameh Samir Ali et al. Sci Total Environ. .

Abstract

Accumulation of plastic wastes has been recently recognized as one of the most critical environmental challenges, affecting all life forms, natural ecosystems and economy, worldwide. Under this threat, finding alternative environmentally-friendly solutions, such as biodegradation instead of traditional disposal, is of utmost importance. However, up to date, there is limited knowledge on plastic biodegradation mechanisms and efficiency. From this point of view, the purpose of this review is to highlight the negative effects of the accumulation of the most conventional plastic waste (polyethylene, polypropylene, polystyrene, polyvinylchloride, polyethylene terephthalate and polyurethane) on the environment and to present their degradability potential through abiotic and biotic processes. Furthermore, the ability of different microbial species for degradation of these polymers is thoroughly discussed. The present review also addresses the contribution of invertebrates, such as insects, in plastic degradation process, highlighting the vital role that they could play in the future. In total, a schematic pathway of an innovative approach to improve the disposal of plastic wastes is proposed, with view to establishing an effective and sustainable practice for plastic waste management.

Keywords: Biodegradation; Degradation mechanisms; Insects; Plastic; Pollution; Polymer.

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Conflict of interest statement

Declaration of competing interest The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

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