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在高效的废水处理中,使用颗粒性污泥处理Hg (II) 和Se (IV) 的微生物对抗机制

Zhanfei He¹, Jiaquan Shen¹, Yuanhai Zhao¹

¹Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, China.

|February 17, 2024

概括

这项研究开发了一种颗粒式污泥方法,从废水中去除和,将有毒转化为稳定的矿物质. 这种高效的微生物过程为污染提供了安全和可回收的解决方案.

科学领域:

环境微生物学环境微生物学
生物技术是生物技术.
环境化学环境化学

背景情况:

在更高的生物体中已知和的相互作用.
和之间的微生物对抗性为废水处理提供了潜力.

研究的目的:

利用 (Hg) 和 (Se) 的微生物对抗作用,有效处理废水.
开发和优化颗粒型污泥的方法来去除Hg (II) 和Se (IV).

主要方法:

使用无氧-氧-无氧 (AOA) 条件处理颗粒污泥.
使用抑制实验和分析更多的操作表达.
进行元基因组和元转录组分析以确定微生物参与者和途径.

主要成果:

实现了高的去除率:Hg (II) 的99.91%和Se (IV) 的97.7%.
将Hg(II) 转化为惰性,高纯度的蒂曼尼特 (HgSe),没有检测到甲基 (MeHg).
确定了两种能够合成HgSe的细菌类 (Rhodospirillales和Xanthomonadales).

结论:

在AOA条件下的颗粒污泥对废水中的去除和回收有效.
微生物对Hg(II) 转化为Hg(0) 然后转化为HgSe是一个关键机制.
HgSe副产品稳定,毒性较低,可回收,最大限度地降低了二次污染风险.

关键词:

具有对抗性的效应.有颗粒的污泥污泥.在HgSe纳米粒子中.减少的减少方法减少的减少

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