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在Cr (VI) 冲击后通过生物加速器恢复氨同化微生物群

Tong Jiao¹, Chuanfu Zhao¹, Mengru Zhang¹

¹School of Civil Engineering, Shandong University, Jinan, Shandong, PR China; Laboratory of Water-sediment Regulation and Eco-decontamination, Jinan, Shandong, PR China.

Journal of environmental management

|October 25, 2024

概括

生物加速剂如细胞因素可以恢复受重金属影响的废水处理系统. 这项研究表明,它们增强了氨同化和微生物社区功能,提高了污染物清除效率.

科学领域:

环境微生物学环境微生物学
废水处理废水处理
生物修复是一种生物修复.

背景情况:

预处理过程往往无法完全去除重金属,从而有可能导致废水处理系统的崩.
异质氨同化 (HAA) 显示了由于微生物强度的重金属冲击后稳定性的潜力.
需要策略来加强HAA系统从重金属毒性中恢复.

研究的目的:

研究三种生物加速剂 (维生素A,6-氨酸和α-氨酸) 的潜力,以恢复受 (VI) 影响的HAA系统.
评估这些生物加速剂对氨去除效率和微生物社区动态的影响.

主要方法:

评估了20 mg/L Cr (VI) 对HAA系统的影响.
应用了三种生物加速剂:维生素A,6-氨酸素 (细胞因素) 和α-甲酸.
监测氨- (NH₄⁺-N) 清除效率,微生物群体结构和功能性基因表达.

主要成果:

生物加速剂有效地减轻了Cr (VI) 毒性,细胞因素在6天内增加了60.4%的NH-N去除效率.
生物加速剂促进了细胞外蛋白成分的产生,并刺激了细胞外聚合物质 (EPS) 的分泌.
社区分析显示,种类间竞争加剧,组装过程发生了变化,从而改善了社区的结构和功能.

结论:

维生素A,6-氨酸和α-氨酸在恢复受重金属毒性影响的HAA系统方面是有效的.
这些生物加速剂增强微生物社区的弹性和功能性基因表达,改善整体治疗性能.
该研究提供了一种改善HAA流程和修复废水处理中的微生物毒性的实际策略.

关键词:

6 - - 乙烯胺氨酸是什么?异性氨同化异性氨同化六价的六价是一种维生素A 维生素A是一种维生素.α-谷氨酸酸是什么?

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