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Photochlorination-induced degradation of microplastics and interaction with Cr(VI) and amlodipine

The Science of The Total Environment 2022 23 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Peng Liu, Xiaowei Wu, Peng Liu, Peng Liu, Xuetao Guo Xiaowei Wu, Xuetao Guo Zixuan Zhang, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Zixuan Zhang, Xiaowei Wu, Xuetao Guo Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Jiamin Dai, Peng Liu, Xiaowei Wu, Xiaowei Wu, Zixuan Zhang, Jiamin Dai, Peng Liu, Xiaowei Wu, Xuetao Guo Jiamin Dai, Jiamin Dai, Xuetao Guo Peng Liu, Xiaowei Wu, Peng Liu, Peng Liu, Xiaowei Wu, Peng Liu, Xuetao Guo Peng Liu, Peng Liu, Peng Liu, Jiamin Dai, Zixuan Zhang, Xuetao Guo Xiaowei Wu, Jiamin Dai, Jiamin Dai, Jiamin Dai, Xuetao Guo Xiaowei Wu, Jiamin Dai, Xiaowei Wu, Xiaowei Wu, Jiamin Dai, Zixuan Zhang, Xuetao Guo Xuetao Guo Xuetao Guo Xiaowei Wu, Xiaowei Wu, Suyi Pan, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Suyi Pan, Suyi Pan, Suyi Pan, Suyi Pan, Suyi Pan, Peng Liu, Peng Liu, Peng Liu, Peng Liu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Zixuan Zhang, Xiaowei Wu, Jiamin Dai, Xuetao Guo Xuetao Guo Zixuan Zhang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Zixuan Zhang, Xuetao Guo Jiamin Dai, Xuetao Guo Peng Liu, Peng Liu, Peng Liu, Xiaowei Wu, Xiaowei Wu, Jiamin Dai, Xiaowei Wu, Jiamin Dai, Xuetao Guo Peng Liu, Xuetao Guo Xiaowei Wu, Peng Liu, Xuetao Guo Xiaowei Wu, Xuetao Guo Xiaowei Wu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Zixuan Zhang, Xuetao Guo Zixuan Zhang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xiaowei Wu, Xiaowei Wu, Zixuan Zhang, Zixuan Zhang, Peng Liu, Peng Liu, Peng Liu, Peng Liu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Peng Liu, Xiaowei Wu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Jiamin Dai, Peng Liu, Xuetao Guo Xuetao Guo Xuetao Guo Jiamin Dai, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Peng Liu, Xuetao Guo Xuetao Guo Peng Liu, Xuetao Guo Xuetao Guo Peng Liu, Xuetao Guo Xiaowei Wu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo

Summary

Researchers found that photochlorination during wastewater disinfection significantly degrades polyethylene, polypropylene, and polystyrene microplastics while altering their interactions with co-existing pollutants like chromium and pharmaceuticals, potentially affecting environmental fate.

Polymers

PE PP PS

Study Type Environmental

Wastewater treatment plants (WWTPs) are the important source of microplastics (MPs) in the environment, and disinfection processes bear high potential to degrade MPs. This study investigated the physicochemical degradation, dissolved organic products and interaction with co-existed pollutants (heavy metal and pharmaceutical) on polyethylene (PE), polypropylene (PP) and polystyrene (PS) MPs during simulated disinfection processes. Compared to photo or chlorination, photochlorination significantly resulted in the physicochemical degradation, including morphology alteration, fragmentation, and chemical oxidation on PP and PS MPs, but showed relatively low effect on PE, indicating the different resistance among polymers to disinfected treatment. Photochlorination also caused the formation of chain-scission organic compounds and even chlorinated products from MPs (e.g. CHOCl for PP and monochlorophenol, dichlorophenol, chloroacetophenone and chlorobenzoic acid for PS), which may form disinfection byproducts to induce healthy risk. The adsorption potentials of MPs for Cr(VI) or amlodipine were enhanced by photochlorination since the cracking and formed oxygen functional groups enhanced the pore filling and surface precipitation of Cr(VI), and the electrostatic attraction and hydrogen bonding with amlodipine. The findings indicated the physicochemical degradation of MPs and the combined pollution with co-existed pollutants, highlighting the health risks of MP-derived organic products during the disinfection treatments (even in normal dosage) in WWTPs.

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