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在酸盐降解系统中对4-烯增强生物降解的新见解:过程性能和机制
Jing Wang1, Qiang Chi1, Ling Pan1
1Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Water research
|June 19, 2023
概括
酸盐添加显著提高了上游酸盐降解生物反应器中的4-甲生物降解,实现了高的去除效率,并阐明了一种涉及丰富微生物群落和促进新陈代谢途径的新奇协同机制,以实现可持续的生物修复.
科学领域:
- 环境微生物学 环境微生物学
- 生物修复工程 生物修复工程
- 生物化学工程 生物化学工程
背景情况:
- 化类因它们在传统的无氧生物过程中的反复性而带来环境挑战.
- 对4-烯 (4-BP) 生物降解和酸盐减少的协同机制的有限理解阻碍了有效的生物修复策略.
研究的目的:
- 研究4 - 甲生物降解和酸盐降解在上游酸盐降解生物反应器 (NRBR) 中的协同机制.
- 阐明微生物社区进化和参与增强4-BP去除的代谢途径.
主要方法:
- 在215天内运行上游酸盐降低生物反应器 (NRBR).
- 使用人口演变分析分析微生物种群动态的分析.
- 生物降解中间体的识别和路径的阐明.
- 超基因组分析以确定增强的基因和代谢途径.
主要成果:
- 在NRBR中实现了完全的4-BP生物降解 (91.33±2.11%的TOC去除) 和酸盐减少 (98.31±1.33%).
- 在除,生物降解和酸盐减少中涉及的特定微生物群体的显著丰富.
- 确定关键中间体和拟议的4-BP生物降解途径,包括水化,环裂解和水解脱.
- 增强氧化,脱和生物矿化通路,并促进碳,和能量代谢.
结论:
- 添加酸盐作为关键的电子受体,增强4-BP生物降解和酸盐减少效率.
- 该NRBR系统促进协同作用的微生物群落和代谢环境,以有效地去除化.
- 这项研究为开发可持续的生物修复策略提供了机制性见解,用于化化合物.
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