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Effect of microplastics on greenhouse gas and ammonia emissions during aerobic composting

The Science of The Total Environment 2020 127 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.

Yue Sun, Xiuna Ren, To‐Hung Tsui, Yue Sun, Yue Sun, Xiuna Ren, To‐Hung Tsui, Xiuna Ren, Xiuna Ren, Xiuna Ren, Xiuna Ren, Liwen Luo, To‐Hung Tsui, Yue Sun, Yue Sun, Yue Sun, Yue Sun, Yue Sun, To‐Hung Tsui, To‐Hung Tsui, Junting Pan, To‐Hung Tsui, To‐Hung Tsui, Yue Sun, Yue Sun, To‐Hung Tsui, To‐Hung Tsui, Xiuna Ren, Zengqiang Zhang, Xiuna Ren, Zengqiang Zhang, To‐Hung Tsui, Xiuna Ren, Yue Sun, Quan Wang Zengqiang Zhang, Zengqiang Zhang, To‐Hung Tsui, Xiuna Ren, To‐Hung Tsui, To‐Hung Tsui, To‐Hung Tsui, Quan Wang Quan Wang Zengqiang Zhang, Zengqiang Zhang, Zengqiang Zhang, Quan Wang Yue Sun, Quan Wang Liwen Luo, Quan Wang Zengqiang Zhang, Zengqiang Zhang, Quan Wang Quan Wang Quan Wang Quan Wang Xiuna Ren, Zengqiang Zhang, Zengqiang Zhang, Zengqiang Zhang, Quan Wang

Summary

Adding polyethylene, PVC, or biodegradable PHA microplastics to composting manure altered greenhouse gas and ammonia emissions, with PE and PHA increasing methane and ammonia while PVC reduced them. All three types of microplastics reduced compost quality and nitrogen content, raising concerns about plastic contamination in organic waste recycling.

Polymers

PE PVC

The aim of this study was to investigate the effect of polyethylene (PE), polyvinyl chloride (PVC) and polyhydroxyalkanoate (PHA) microplastics on greenhouse gas and ammonia emissions during 60 days composting. PE, PVC and PHA microplastics were respectively mixed with the cow manure; and a treatment without microplastics was used as the control. Compared to the control, PE and PVC inhibited organic matter degradation. Conversely, PHA accelerated temperature increases and organic matter degradation. Meanwhile, PE and PHA aggravated CH and NH emissions by 7.9-9.1% and 20.9-33.9%, respectively. PVC decreased CH and NH emissions by 6.6% and 30.4%, respectively. Additionally, the NO emissions of the PE and PVC treatments were higher than those of the control while PHA decreased NO emissions by 11.8%. Furthermore, PE, PVC and PHA microplastics reduced the NO-N contents and compost maturity. The results indicated that microplastics reduced compost quality while the effects of microplastics on greenhouse gases and ammonia emissions were related to their sources.

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