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Investigation of the microplastics profile in sludge from China’s largest Water reclamation plant using a feasible isolation device

Journal of Hazardous Materials 2020 131 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Wenzhuo Shi, Lihui An Li Xu, Li Xu, Lihui An Qiujin Xu, Qiujin Xu, Qiujin Xu, Kun Lei, Qiujin Xu, Qiujin Xu, Qiujin Xu, Feifei Wang, Wenzhuo Shi, Li Xu, Yiyao Gao, Wenzhuo Shi, Yiyao Gao, Wenzhuo Shi, Lihui An Lihui An Lihui An Li Xu, Lihui An Lihui An Li Xu, Li Xu, Li Xu, Lihui An Lihui An Gerald A. LeBlanc, Song Cui, Kun Lei, Li Xu, Lihui An Li Xu, Li Xu, Lihui An Lihui An Li Xu, Li Xu, Yiyao Gao, Gerald A. LeBlanc, Yiyao Gao, Qiujin Xu, Qiujin Xu, Qiujin Xu, Wenzhuo Shi, Yiyao Gao, Lihui An Li Xu, Yiyao Gao, Li Xu, Li Xu, Li Xu, Li Xu, Li Xu, Li Xu, Li Xu, Lihui An Lihui An Lihui An Lihui An Wenzhuo Shi, Song Cui, Feifei Wang, Feifei Wang, Qiujin Xu, Qiujin Xu, Gerald A. LeBlanc, Gerald A. LeBlanc, Yiyao Gao, Qiujin Xu, Wenzhuo Shi, Lihui An Song Cui, Lihui An Song Cui, Song Cui, Song Cui, Li Xu, Lihui An Lihui An Lihui An Kun Lei, Lihui An Li Xu, Lihui An Lihui An Lihui An Lihui An Gerald A. LeBlanc, Lihui An Gerald A. LeBlanc, Li Xu, Qiujin Xu, Qiujin Xu, Lihui An Li Xu, Lihui An Li Xu, Lihui An Lihui An Lihui An Lihui An Song Cui, Song Cui, Li Xu, Lihui An Lihui An Li Xu, Li Xu, Qiujin Xu, Qiujin Xu, Li Xu, Qiujin Xu, Lihui An Qiujin Xu, Li Xu, Lihui An Lihui An Lihui An Li Xu, Song Cui, Wenzhuo Shi, Qiujin Xu, Li Xu, Lihui An Lihui An Qiujin Xu, Lihui An Qiujin Xu, Lihui An Li Xu, Li Xu, Li Xu, Kun Lei, Lihui An Lihui An Lihui An Li Xu, Li Xu, Lihui An Li Xu, Lihui An Li Xu, Li Xu, Lihui An Lihui An Lihui An Lihui An

Summary

This study developed a practical isolation device for extracting microplastics from sewage sludge using a fritted glass funnel and filtration apparatus, and applied it to sludge from Chinese wastewater treatment plants. The results revealed diverse microplastic types in sludge, with implications for land application of sludge as fertilizer.

Polymers

ABS PE PET PP

Body Systems

Reproductive

Sewage sludge, which is widely applied to land as a fertilizer, is a key source of microplastics in the environment. We sought to develop a feasible device for isolation of microplastic from sewage sludge for further understanding their fates in the environment. In the present study, an effective isolation device, consisting of a fritted glass funnel and a glass filtration apparatus, was constructed to extract microplastics from sludge with nearly 100% recovery efficiency. Then, a high abundance of microplastics was detected in sludge sampled from China's largest sewage treatment plant. Among the 25 types of microplastic polymers confirmed by Fourier transform infrared spectroscopy, poly(11-bromoundecyl acrylate) (PBA) and poly(11-bromoundecyl methacrylate) (PBMA) accounted for 23.63% of total microplastics detected. Rayon, polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), and copolymers, such as PP/PE and poly(styrene:acrylonitrile:butadiene) (ABS), were also detected. The shapes of these microplastics consisted of pellets, fragments, films, and microfibers. Characterization of the isolated microplastics revealed that domestic applications and vehicle products were the major sources of microplastic in sewage treatment sludge. Some priority recommendations were issued based on these results. In conclusion, the present study demonstrate that the device is effective for the isolation of microplastics from sludge.

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