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在无氧条件下从采矿现场用微生物去除六价

Mohammad Tariq Ali Khan¹, Sumaiya Said Al-Siyabi¹, Hamada E Ali¹

¹Biology Department, College of Science, Sultan Qaboos University, Muscat, Oman.

Frontiers in bioengineering and biotechnology

|September 29, 2025

概括

在无氧条件下,微生物地毯有效地从地下水中去除六价 (Cr(VI)). 这一过程涉及生物吸收和酶降解到较少有毒的Cr(III),提供了一个可持续的生物修复战略.

科学领域:

环境科学环境科学
微生物学微生物学
地质化学地质化学

背景情况:

采矿活动导致地下水受到六价 (Cr) 的严重污染.
众所周知,微生物在有氧环境中可以去除Cr (VI),但在无氧条件下其有效性是未知的.

研究的目的:

在无氧条件下,研究用微生物从矿中去除Cr (VI) 的情况.
阐明了通过无氧微生物地毯去除Cr (VI) 的机制.

主要方法:

用不同度的Cr (VI) (5-50毫克L-1) 化微生物地毯.
对细胞外聚合物质 (EPS) 和参与生物吸收的功能群的分析.
酶测定染色体还原酶活性.
使用MiSeq测序分析细菌社区结构的变化.

主要成果:

在较高的CrVI度下,CrVI的去除率增加,达到0.77 ± 0.05毫克L-1d-1.
通过EPS生产增强了生物吸收,涉及金属-O,PO4和C-N等功能组.
证实了Cr (VI) 到Cr (III) 的酶性降解.
细菌群落转向了Clostridia,Bacilli,Gammaproteobacteria和Alphaproteobacteria,随着Cr (VI) 水平的增加,这些细菌群落转向了Clostridia,Bacilli,Gammaproteobacteria和Alphaproteobacteria,这些细菌群落转向了Clostridia,Bacilli,Gammaproteobacteria和Alphaproteobacteria.

结论:

无氧微生物有效地通过生物吸收和酶降解去除Cr (VI).
该研究确定了在低氧条件下参与Cr(VI) 生物修复的关键细菌群体和机制.
微生物是一种有前途的工具,用于修复受矿业影响地区的Cr (VI) 污染的地下水.

关键词:

生物还原可以减少.生物吸收生物吸收选择性的无气体.六价的六价是一种这是一种微生物.

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