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在无氧消化过程中, perfluorooctanoic 酸对甲生产的影响和微生物机制

Lu Li¹, Wenkai Li², Yunpeng Xue³

¹State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Lake and Watershed Science for Water Security, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100049, China.

Journal of environmental management

|September 5, 2024

概括

perfluorooctanoic 酸 (PFOA) 在污泥消化过程中没有显著影响甲的产生. 然而,PFOA改变了微生物的功能,并降低了脱水率,引发了人们对其在消化的污泥中的环境风险的担忧.

科学领域:

环境科学环境科学
环境化学环境化学
微生物学微生物学

背景情况:

perfluorooctanoic 酸 (PFOA) 是一种持久性环境污染物.
PFOA对无氧消化和微生物群落的影响尚不清楚.

研究的目的:

为了研究不同剂量的PFOA对污泥消化的影响.
为了阐明在消化过程中受到PFOA影响的微生物机制.

主要方法:

用PFOA度从0到10000μg/L的泥消化实验.
分析甲产量,可溶性蛋白质,PFOA分布,脱水率和微生物群落结构 (mcrA丰度,类,属,古生物).
使用FAPROTAX和Tax4fun.fun. 的功能预测.

主要成果:

不同的PFOA剂量之间没有观察到甲产生的显著变化.
可溶性蛋白质显著下降,脱水率随着PFOA的增加而下降.
PFOA主要分为液相 (54.10 ± 18.38%) 和与剂量呈指数相关.
微生物群落的结构和功能 (发酵,无氧化化学异性) 被PFOA显著改变.
mcrA的丰度与pH值和有机物质相关.

结论:

酸对甲产生的影响最小,但在污泥消化过程中显著影响微生物功能.
由于潜在的环境风险,PFOA在消化的污泥中的持久性值得注意.
了解PFOA的微生物影响对于处理受污染的污泥至关重要.

关键词:

无氧消化消化无氧消化函数预测的功能预测.甲收益率是什么意思微生物机制的微生物机制 perfluorooctanoic 酸的含量是多少

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