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Current progress on plastic/microplastic degradation: Fact influences and mechanism

Environmental Pollution 2022 308 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Dandan Xu, Jiangchi Fei Zhenyan Lin, Tao Zou, Tuo Jin, Tuo Jin, Tuo Jin, Zhenyan Lin, Dandan Xu, Tuo Jin, Tao Zou, Yaoyu Zhou, Yaoyu Zhou, Tuo Jin, Tuo Jin, Li Xu, Tuo Jin, Yaoyu Zhou, Jianwei Peng, Tuo Jin, Tuo Jin, Bin Xi, Jiangchi Fei Bin Xi, Dandan Xu, Tuo Jin, Tuo Jin, Jianwei Peng, Yaoyu Zhou, Yaoyu Zhou, Tuo Jin, Jian-Wu He, Jian-Wu He, Jianwei Peng, Jiangchi Fei Yaoyu Zhou, Lizhi Xiong, Chong-Jian Tang, Yaoyu Zhou, Chong-Jian Tang, Jianwei Peng, Jiangchi Fei Yaoyu Zhou, Jiangchi Fei

Summary

This review examined current physicochemical and biological methods for degrading plastics and microplastics, including mechanical, UV, thermal, and microbial approaches. Researchers found that while multiple degradation pathways exist, their efficiency varies widely depending on polymer type and environmental conditions. The study highlights the need for more effective and scalable degradation technologies to address growing plastic pollution.

Plastic pollution, particularly non-degradable residual plastic films and microplastics (MPs), is a serious environmental problem that continues to worsen each year. Numerous studies have characterized the degradation of plastic fragments; however, there is known a lack of about the state of current physicochemical biodegradation methods used for plastics treatment and their degradation efficiency. Therefore, this review explores the effects of different physicochemical factors on plastics/MPs degradation, including mechanical comminution, ultraviolet radiation, high temperature, and pH value. Further, this review discusses different mechanisms of physicochemical degradation and summarizes the degradation efficiency of these factors under various conditions. Additionally, the important role of enzymes in the biodegradation mechanism of plastics/MPs is also discussed. Collectively, the topics discussed in this review provide a solid basis for future research on plastics/MPs degradation methods and their effects.

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