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How do polyhydroxyalkanoates aged by aerobic compost interact with steroidal estrogens to alter their adsorption and transport characteristics? Kinetics, isotherms, and influencing factors

Journal of Hazardous Materials 2024 5 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.

Shengwei Zhang, Shengwei Zhang, Zhijie Xing, Shengwei Zhang, Zhijie Xing, Shengwei Zhang, Shengwei Zhang, Shengwei Zhang, Zhijie Xing, Zhijie Xing, Shengwei Zhang, Shengwei Zhang, Yanxia Li, Xingcai Chen, Shengwei Zhang, Xingcai Chen, Xingcai Chen, Xingcai Chen, Yanxia Li, Xingcai Chen, Linshu Jiang, Linshu Jiang, Yanxia Li, Linshu Jiang, Linshu Jiang, Xiaoman Jiang, Shengwei Zhang, Xiaoman Jiang, Xiaoman Jiang, Linshu Jiang, Linshu Jiang, Xingcai Chen, Xingcai Chen, Xingcai Chen, Shengwei Zhang, Xiaoman Jiang, Yunxiao Bai, Xiaoman Jiang, Yunxiao Bai, Zhijie Xing, Zhijie Xing, Xingcai Chen, Xiaoman Jiang, Shengwei Zhang, Linshu Jiang, Shengwei Zhang, Luoyun Fang Xiaoman Jiang, Xiaoman Jiang, Zhijie Xing, Zhijie Xing, Zhijie Xing, Shengwei Zhang, Zhijie Xing, Yan Zhao, Luoyun Fang Luoyun Fang Luoyun Fang

Summary

Researchers studied how biodegradable polyhydroxyalkanoate microplastics aged through composting interact with estrogen hormones in the environment. They found that compost-aged particles had significantly higher capacity to absorb estrogens than fresh ones, and that the hormones were readily released when exposed to conditions simulating bird digestion. The study suggests that aged biodegradable microplastics in compost-treated soils could act as carriers that increase the spread and bioavailability of hormone pollutants.

Body Systems

Digestive Endocrine Reproductive

Despite evidence indicating a substantial presence of microplastics (MPs) in organic fertilizers, research exploring the differences of MPs among various types of organic fertilizers remains limited. Additionally, MPs can act as carriers for organic pollutants, influencing their environmental behaviors. This study investigated the presence of MPs in organic fertilizers and their effects on the environmental behaviors of steroidal estrogens. We compared the adsorption of estrone (E1) and estrone sulfate sodium (E1-3S) by original PHA and PHA aged through cattle manure-straw compost (CS) and vermicompost (VC). PHA-CS exhibited the highest adsorption capacities for E1 (47.97 ± 2.20 μg g) and E1-3S (64.32 ± 2.09 μg g). Dissolved organic matter (DOM) from CS and VC profoundly affected estrogen adsorption onto PHA, with VC-derived DOM inhibiting and CS-derived DOM promoting adsorption. In simulated avian digestive fluid, the desorption efficiency of E1 was 72.46 %-93.43 % higher than that of E1-3S, indicating increased toxicity and bioavailability of E1 upon bird ingestion. Transport experiments strongly suggested that estrogens could be more easily retained in porous media containing aged PHA. This study advances our understanding of the adsorption mechanisms of aerobic compost-derived PHA on estrogens and their desorption behaviors under different environmental conditions.

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