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Remediation
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Unraveling the role of natural and pyrogenic dissolved organic matter in photodegradation of biodegradable microplastics in freshwater
Carbon Research2023
32 citations
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Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 50
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0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Lanfang Han,
Elvis Genbo Xu,
Elvis Genbo Xu,
Lanfang Han,
Liying Chen,
Liying Chen,
Elvis Genbo Xu,
Weiwei Ma,
Jiehong He,
Jiehong He,
Jiehong He,
Jiehong He,
Jiehong He,
Jiehong He,
Lanfang Han,
Lanfang Han,
Jiehong He,
Liying Chen,
Liying Chen,
Liying Chen,
Liying Chen,
Elvis Genbo Xu,
Elvis Genbo Xu,
Lanfang Han,
Weiwei Ma,
Jiehong He,
Elvis Genbo Xu,
Liying Chen,
Liying Chen,
Zhifeng Yang,
Lanfang Han,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Lanfang Han,
Lanfang Han,
Lanfang Han,
Lanfang Han,
Lanfang Han,
Elvis Genbo Xu,
Lanfang Han,
Elvis Genbo Xu,
Elvis Genbo Xu,
Lanfang Han,
Lanfang Han,
Elvis Genbo Xu,
Lanfang Han,
Baoshan Xing
Lanfang Han,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Elvis Genbo Xu,
Baoshan Xing
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Weiwei Ma,
Jiehong He,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Lanfang Han,
Lanfang Han,
Lanfang Han,
Lanfang Han,
Elvis Genbo Xu,
Lanfang Han,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Baoshan Xing
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Lanfang Han,
Lanfang Han,
Lanfang Han,
Liying Chen,
Liying Chen,
Liying Chen,
Liying Chen,
Jiehong He,
Jiehong He,
Baoshan Xing
Elvis Genbo Xu,
Lanfang Han,
Lanfang Han,
Baoshan Xing
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Baoshan Xing
Elvis Genbo Xu,
Baoshan Xing
Elvis Genbo Xu,
Elvis Genbo Xu,
Baoshan Xing
Lanfang Han,
Baoshan Xing
Lanfang Han,
Baoshan Xing
Elvis Genbo Xu,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Lanfang Han,
Zhifeng Yang,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Elvis Genbo Xu,
Baoshan Xing
Elvis Genbo Xu,
Baoshan Xing
Elvis Genbo Xu,
Baoshan Xing
Weiwei Ma,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Weiwei Ma,
Baoshan Xing
Lanfang Han,
Elvis Genbo Xu,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Elvis Genbo Xu,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Elvis Genbo Xu,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Elvis Genbo Xu,
Zhifeng Yang,
Baoshan Xing
Jiehong He,
Elvis Genbo Xu,
Baoshan Xing
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Elvis Genbo Xu,
Baoshan Xing
Baoshan Xing
Zhifeng Yang,
Baoshan Xing
Zhifeng Yang,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Elvis Genbo Xu,
Zhifeng Yang,
Baoshan Xing
Zhifeng Yang,
Zhifeng Yang,
Zhifeng Yang,
Baoshan Xing
Elvis Genbo Xu,
Baoshan Xing
Elvis Genbo Xu,
Lanfang Han,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Elvis Genbo Xu,
Baoshan Xing
Zhifeng Yang,
Baoshan Xing
Zhifeng Yang,
Elvis Genbo Xu,
Baoshan Xing
Lanfang Han,
Baoshan Xing
Summary
Researchers investigated how dissolved organic matter from natural sources versus biochar affects the breakdown of biodegradable polylactic acid (PLA) microplastics in sunlight. Naturally sourced organic matter accelerated PLA degradation nearly twice as much as biochar-derived matter by generating more reactive oxygen species, suggesting that the type of organic matter in a waterway significantly influences whether biodegradable plastics actually break down.
Abstract Biodegradable plastic is often perceived as a possible solution for microplastic (MP) pollution. Photodegradation is an important transformation pathway of biodegradable MPs in aquatic environments. However, the influence mechanisms of dissolved organic matter (DOM) from different sources on photodegradation of biodegradable MPs are poorly understood. This study explored the role of naturally and pyrogenically sourced DOM in the photodegradation of polylactic acid (PLA) MPs. The aromatics of natural DOM (NDOM) were higher than those of biochar-sourced DOM (BDOM) and showed a stronger improvement in PLA-MPs degradation, as evidenced by particle size reduction, crystallinity increase and polymerization decrease, breakage of surface morphology, and increase in oxygen-containing functional groups on MPs’ surface (O/C increase: 65.1% for NDOM; 34.9% for BDOM). Reactive oxygen species analysis showed that the excited triplet states of DOM ( 3 DOM * ) generated by NDOM produced more •OH and 1 O 2 than that of BDOM, accelerating PLA-MPs photodegradation. Such photodegradation processes were further enhanced through the sorption of DOM by PLA-MPs, in which non-aromatic components were preferentially sorbed, causing the enrichment of aromatics in the solution, leading to more 3 DOM * formation. This study improves the understanding of the migration and transformation of biodegradable MPs with the presence of DOM. Graphical Abstract