微生物燃料电池辅助堆肥在金属钝化、抗生素降解和抗性基因去除方面性能更高

IF 7.7 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Research Pub Date : 2024-11-23 DOI:10.1016/j.envres.2024.120421

Hu Cui , Sheng-Nan Hou , Xin-Yi Wang , Lei Li , Xiao-Hu Dai , Hui Zhu

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引用次数: 0

摘要

关于堆肥过程中自生电化学反应下金属钝化、抗生素降解和抗性基因去除的科学证据很少。本研究建立了微生物燃料电池（MFC）辅助堆肥程序，以确定金属、抗生素及其抗性基因的去除性能和解毒机制。与对照处理相比，MFC辅助处理中锌（Zn）和铜（Cu）的生物利用率分别降低了7.8%和26.9%，而四环素（TCL）和土霉素（OCL）的含量则分别降低了100%和89%。在堆肥过程中，有机物矿化和腐殖化分别造成了 80% 和 70% 的金属钝化和抗生素降解变化。在 MFC 辅助堆肥处理过程中，发现 tetW 基因减少了 54%，而 copA 基因增加了 42%。这些发现强调了堆肥过程中金属钝化和抗生素降解的解毒机制，可能为环境源保护和农业可持续发展提供有价值的见解。

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Microbial fuel cell-assisted composting yields higher performance on metals passivation, antibiotics degradation, and resistance genes removal

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Microbial fuel cell-assisted composting yields higher performance on metals passivation, antibiotics degradation, and resistance genes removal

Little scientific evidence on metal passivation, antibiotic degradation and resistance genes removal, is available under autogenetic electrochemical reactions during composting process. This study established microbial fuel cell (MFC)-assisted composting procedure to ascertain the removal performance and detoxification mechanisms involving metals, antibiotics and their resistance genes. Compared to control treatment, the bioavailability of zinc (Zn) and copper (Cu) in MFC-assisted treatment decreased by 7.8% and 26.9%, while the content of tetracycline (TCL) and oxytetracycline (OCL) reduced by 100% and 89%, respectively. Organics mineralization and humification were responsible for 80% and 70% of the variations in metal passivation and antibiotic degradation during composting process. A decrease of 54% was found for tetW gene, while copA gene increased by 42% in MFC-assisted composting treatment. These findings highlight the detoxification mechanisms underlying metal passivation and antibiotic degradation during composting process, and potentially offer valuable insights for environmental source protection and agricultural sustainable development.

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来源期刊

Environmental Research 环境科学-公共卫生、环境卫生与职业卫生

CiteScore

12.60

自引率

8.40%

发文量

2480

审稿时长

4.7 months

期刊介绍： The Environmental Research journal presents a broad range of interdisciplinary research, focused on addressing worldwide environmental concerns and featuring innovative findings. Our publication strives to explore relevant anthropogenic issues across various environmental sectors, showcasing practical applications in real-life settings.