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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Sign in to save

Transport and fate of microplastics in constructed wetlands: A microcosm study

Journal of Hazardous Materials 2021 144 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.
Huahong Shi, Xiong Xiong, Yuling Chen, Huahong Shi, Xiong Xiong, Huahong Shi, Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Yuling Chen, Yuling Chen, Yuling Chen, Chenxi Wu Chenxi Wu Chenxi Wu Xiong Xiong, Xiong Xiong, Huahong Shi, Xiong Xiong, Huahong Shi, Huahong Shi, Xiong Xiong, Tiancui Li, Xiong Xiong, Chenxi Wu Yuling Chen, Xiong Xiong, Hongjuan Hu, Yuling Chen, Huahong Shi, Tiancui Li, Chenxi Wu Hongjuan Hu, Huahong Shi, Xiong Xiong, Chenxi Wu Xiong Xiong, Huahong Shi, Huahong Shi, Huahong Shi, Chenxi Wu Chenxi Wu Hongjuan Hu, Chenxi Wu Chenxi Wu Chenxi Wu Hongyi Ao, Hongjuan Hu, Hongjuan Hu, Hongyi Ao, Yuling Chen, Yuling Chen, Xiong Xiong, Chenxi Wu Xiong Xiong, Chenxi Wu Huahong Shi, Xiong Xiong, Xiong Xiong, Hongjuan Hu, Xiong Xiong, Chenxi Wu Huahong Shi, Xiong Xiong, Xiong Xiong, Xiong Xiong, Chenxi Wu Huahong Shi, Chenxi Wu Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Huahong Shi, Huahong Shi, Huahong Shi, Hongjuan Hu, Chenxi Wu Huahong Shi, Xiong Xiong, Huahong Shi, Huahong Shi, Chenxi Wu Hongyi Ao, Hongjuan Hu, Hongjuan Hu, Hongyi Ao, Huahong Shi, Hongjuan Hu, Huahong Shi, Chenxi Wu Chenxi Wu Yuling Chen, Chenxi Wu Chenxi Wu Chenxi Wu Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Chenxi Wu Xiong Xiong, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Chenxi Wu Chenxi Wu Hongjuan Hu, Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Xiong Xiong, Hongjuan Hu, Chenxi Wu Chenxi Wu Chenxi Wu Chenxi Wu Huahong Shi, Chenxi Wu Huahong Shi, Hongjuan Hu, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Xiong Xiong, Xiong Xiong, Hongjuan Hu, Chenxi Wu Huahong Shi, Chenxi Wu Chenxi Wu Chenxi Wu Huahong Shi, Chenxi Wu Chenxi Wu Chenxi Wu Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Chenxi Wu Xiong Xiong, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Chenxi Wu Huahong Shi, Chenxi Wu Huahong Shi, Huahong Shi, Chenxi Wu Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Chenxi Wu Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Chenxi Wu Huahong Shi, Huahong Shi, Huahong Shi, Chenxi Wu Chenxi Wu Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Chenxi Wu Chenxi Wu Huahong Shi, Huahong Shi, Chenxi Wu Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Huahong Shi, Chenxi Wu

Summary

This study tested microplastic removal in constructed wetlands using different particle shapes and sizes, finding 81.6% removal in surface flow systems and 100% removal in horizontal subsurface flow systems, with biofilm attachment and physical filtration as key retention mechanisms.

Study Type Environmental

Constructed wetlands (CWs) are commonly used for the treatment of wastewater. However, the removal of microplastics in CWs are poorly understood. In this work, the fate and behavior of microplastics of different shapes (film, fragment, and fiber) and sizes (0.5-1 mm and 2-4 mm) were studied. Results showed that the microplastic removal rate was 81.63% in surface flow constructed wetlands (SF-CWs) and 100% in horizontal subsurface flow constructed wetlands (HSF-CWs). Fragments and fibers with 2-4 mm sizes flowed out preferentially from SF-CWs. Retained microplastics accumulated dominantly near the inlet area. Biofilm attachment and physical filtration played an important role in the retention of microplastics. The microplastics' morphological features and the apertures of the substrate related to the transport of microplastics in the substrate. We observed the formation of holes, cracks, and weeny fibers on the surface of the microplastics extracted from the microcosms with a scanning electron microscope (SEM), but we detected no oxidation based on the Fourier transform infrared spectra. Our results suggest that CWs, especially HSF-CWs, are efficient for the removal of microplastic pollution. However, microplastics are persistent in CWs. The potential impacts of microplastics on the function of CWs should be further assessed.

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