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Effect of microplastics in sludge impacts on the vermicomposting

Bioresource Technology 2021 62 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Huiyuan Zhong, Huiyuan Zhong, Huiyuan Zhong, Ying Zhang Huiyuan Zhong, Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Sen Yang, Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Li Zhu, Ying Zhang Ying Zhang Huiyuan Zhong, Huiyuan Zhong, Huiyuan Zhong, Ying Zhang Chang Liu, Ying Zhang Huiyuan Zhong, Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang Yaozong Zhang, Ying Zhang Yaozong Zhang, Huiyuan Zhong, Huiyuan Zhong, Ying Zhang Ying Zhang Ying Zhang Huiyuan Zhong, Huiyuan Zhong, Ying Zhang Ying Zhang Huiyuan Zhong, Huiyuan Zhong, Ying Zhang Ying Zhang Ying Zhang Ying Zhang Ying Zhang

Summary

Researchers examined how adding polyethylene microplastic particles to sludge affects vermicomposting performance. The study found that higher microplastic concentrations reduced the efficiency of organic matter removal, impaired composting quality, and caused oxidative stress and neurotoxicity in earthworms, with bacterial diversity also declining in heavily contaminated treatments.

Polymers

Body Systems

Nervous

Models

Invertebrate other

To investigate the effect of microplastics (MPs) particles in vermicomposting, polyethylene (PE) particles added into sludge. Results showed that the vermicomposting with high MPs addition obtained lower removal efficiencies for organics than the vermicomposting with low MPs addition. The content of DOC and NH-N in M reactor (with the highest MPs addition) at 80 days was 8.4 mg/kg and 74.2 mg/kg, respectively. The pH, C/N, electrical conductivity (EC), and germination index (GI) results showed that the addition amount of MPs was directly proportional to the negative effect of composting. The negative effect mainly occurred after 20 days of composting. High MPs addition resulted in apparent oxidative stress and neurotoxicity on earthworm, the values of catalase (CAT) and acetylcholine esterase (AChE) in M reactor increased by 2.03 times and 1.60 times. The bacteria in M were more barren and lower in terms of diversity.

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