A review on microbial bioremediation of polyethylene terephthalate microplastics

IF 1.5 Q4 ENGINEERING, ENVIRONMENTAL Environmental Quality Management Pub Date : 2024-05-24 DOI:10.1002/tqem.22264

Rajeswari M. Kulkarni, Neha S. Patwardhan, Pratham B. Iyer, Tanvi D. Bharadwaj

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Abstract

Microplastics (<5 mm size) continue to be a disruptor in the ecosystem being omnipresent in the various spheres of the earth. While there have been various approaches for their degradation, biological approaches continue to be an emerging technology owing to their reduced stress on the environment and energy efficiency. This review paper encompasses the problems created by these microplastics and specifically focuses on polyethylene terephthalate (PET) that are widely used in the packaging and textile industries. This review paper highlights the various microorganisms used to degrade PET and optimum conditions in which PET degradation was carried out. PET is converted to MHET (mono (2-hydroxyethyl) terephthalic acid) by extracellular PETase, which is subsequently transferred into the periplasmic region of microorganisms by outer membrane anchored MHETase, which transforms MHET to terephthalic acid and ethylene glycol. Factors affecting PET degradation like temperature, pH, crystallinity and environment have also been analyzed.

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聚对苯二甲酸乙二酯微塑料微生物生物修复综述

微塑料（尺寸小于 5 毫米）仍然是生态系统的破坏者，在地球的各个领域无处不在。虽然降解这些塑料的方法多种多样，但生物方法因其对环境的压力较小和能源效率高而继续成为新兴技术。本文综述了这些微塑料造成的问题，并特别关注广泛应用于包装和纺织行业的聚对苯二甲酸乙二酯（PET）。本文重点介绍了用于降解 PET 的各种微生物以及进行 PET 降解的最佳条件。PET 通过细胞外 PET 酶转化为 MHET（单（2-羟乙基）对苯二甲酸），随后通过外膜锚定的 MHET 酶转移到微生物的外质区，将 MHET 转化为对苯二甲酸和乙二醇。此外，还分析了温度、pH 值、结晶度和环境等影响 PET 降解的因素。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environmental Quality Management Environmental Science-Management, Monitoring, Policy and Law

CiteScore

2.20

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0.00%

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期刊介绍： Four times a year, this practical journal shows you how to improve environmental performance and exceed voluntary standards such as ISO 14000. In each issue, you"ll find in-depth articles and the most current case studies of successful environmental quality improvement efforts -- and guidance on how you can apply these goals to your organization. Written by leading industry experts and practitioners, Environmental Quality Management brings you innovative practices in Performance Measurement...Life-Cycle Assessments...Safety Management... Environmental Auditing...ISO 14000 Standards and Certification..."Green Accounting"...Environmental Communication...Sustainable Development Issues...Environmental Benchmarking...Global Environmental Law and Regulation.