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The photo-redox of chromium regulated by microplastics (MPs) and MPs-derived dissolved organic matter (MPs-DOM) and the CO2 emission of MPs-DOM
Fundamental Research2022
32 citations
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Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 40
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0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Yalan Chen,
Yalan Chen,
Yalan Chen,
Yang Li,
Yalan Chen,
Yalan Chen,
Yalan Chen,
Yalan Chen,
Yalan Chen,
Enyao Zhang,
Enyao Zhang,
Yang Li,
Yalan Chen,
Yang Li,
Yalan Chen,
Yalan Chen,
Yalan Chen,
Yang Li,
Yang Li,
Yang Li,
Yang Li,
Yalan Chen,
Bo Gao,
Yalan Chen,
Yalan Chen,
Ke Sun,
Bo Gao,
Yalan Chen,
Bo Gao,
Ke Sun,
Yang Li,
Ke Sun,
Ke Sun,
Ke Sun,
Ke Sun,
Ke Sun,
Baoshan Xing
Yang Li,
Yang Li,
Yang Li,
Yang Li,
Yang Li,
Yang Li,
Enyao Zhang,
Yan Yang,
Enyao Zhang,
Enyao Zhang,
Yalan Chen,
Ke Sun,
Yang Li,
Enyao Zhang,
Ke Sun,
Yan Yang,
Yalan Chen,
Yang Li,
Ke Sun,
Baoshan Xing
Yalan Chen,
Ke Sun,
Yan Yang,
Yang Li,
Baoshan Xing
Bo Gao,
Yang Li,
Bo Gao,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Ke Sun,
Ke Sun,
Ke Sun,
Yang Li,
Yan Yang,
Yan Yang,
Yang Li,
Baoshan Xing
Yan Yang,
Yan Yang,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Yalan Chen,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Yang Li,
Yang Li,
Yang Li,
Yang Li,
Ke Sun,
Bo Gao,
Bo Gao,
Bo Gao,
Bo Gao,
Yalan Chen,
Baoshan Xing
Baoshan Xing
Bo Gao,
Baoshan Xing
Yang Li,
Yang Li,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Yang Li,
Baoshan Xing
Yang Li,
Baoshan Xing
Yang Li,
Yang Li,
Baoshan Xing
Baoshan Xing
Ke Sun,
Ke Sun,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Yang Li,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Yang Li,
Yang Li,
Baoshan Xing
Ke Sun,
Baoshan Xing
Baoshan Xing
Ke Sun,
Ke Sun,
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Baoshan Xing
Bo Gao,
Baoshan Xing
Baoshan Xing
Summary
Researchers found that microplastics and their derived dissolved organic matter regulate the photo-redox transformation of chromium in wastewater, with UV exposure converting less toxic Cr(III) to more hazardous Cr(VI) while microplastic-derived organic matter influences this process and contributes to CO2 emissions.
Microplastics (MPs) and chromium (Cr) are common pollutants in wastewater treatment plants, where ultraviolet disinfection processes may degrade MPs and photooxidize Cr(III) into more hazardous Cr(VI). In this study, the effects of MPs on the phototransformation of coexisting Cr, as well as the role and ecological effects of MPs-derived dissolved organic matter (MPs-DOM), were investigated. The photooxidation of MPs and Cr(III) was radical-driven reaction. The addition of MPs inhibited the photooxidation of Cr(III) and induced the photoreduction of Cr(VI) through surface adsorption. Both MPs and MPs-DOM generated comparable ROS at different irradiation moments, which can affect the photodegradation of MPs and MPs-DOM, as well as the phototransformation of Cr. The 56-day incubation showed a higher mineralization ratio of MPs-DOMs than riverine humic acid, indicating the vital contribution of MPs-DOMs to carbon emissions. In general, MPs-DOM lowered microbial abundance and diversity compared to the original inoculum. Bacterial and fungal succession was affected by both MPs-DOM and the original inoculum, with polyvinyl chloride-derived DOM possessing a stronger filtration impact on microbial communities than the other three MPs-DOMs. In this study, a win-win solution for Cr(VI) reduction and MPs treatment through photoirradiation was proposed, and the potential significant role of MPs-DOM in the transformation of coexisting contaminants, the carbon cycle, and microbial succession was highlighted.