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药品和个人护理产品暴露对部分化过程和氧化物排放的影响和微生物机制

Lu Li¹, Yikun Hu², Biqing Li³

¹State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, China.

The Science of the total environment

|August 16, 2023

概括

制药和个人护理产品 (PPCP) 影响部分化和氧化 (N2O) 排放. 虽然PPCP可以抑制化,但它们也通过改变微生物群落和调节化基因来减少N2O的释放.

科学领域:

环境微生物学环境微生物学
环境化学环境化学
废水处理废水处理

背景情况:

制药和个人护理产品 (PPCPs) 是水生环境中新出现的污染物.
部分化是废水处理中消除的关键阶段.
PPCP对部分化和相关的氧化 (N2O) 排放的影响仍然不完全理解.

研究的目的:

为了研究PPCP暴露对部分化的影响.
量化PPCP对氧化 (N2O) 排放的影响.
探索由PPCPs影响的潜在微生物机制.

主要方法:

进行了微观宇宙实验,以评估不同度的PPCP的影响.
监测了部分化性能和N2O排放率.
微生物社区的结构,多样性和功能都使用了metagenomic方法进行了分析.

主要成果:

PPCP在部分化上表现出度依赖的作用,在度≥2μg/L时观察到抑制.
暴露于PPCP显著减少了N2O排放,根据特定的PPCP有不同的缓解效应.
低度的PPCP降低了微生物的丰富性和多样性,而高度 (≥5μg/L) 增加了它们,改变了社区组成,抑制了氨氧化,但上调了脱基因.

结论:

通过与微生物群落的复杂相互作用,PPCP会影响部分化和N2O排放.
了解这些影响对于在存在PPCP污染的情况下优化废水处理过程至关重要.
PPCP可以是双刃剑,抑制关键过程,同时可能减少温室气体排放.

关键词:

微生物社区的微生物社区.氧化氧化是什么?部分化过程中的部分化过程.药品和个人护理产品.

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