在构建的湿地微生物燃料电池中,定数感应增强了对氨的仿真酸盐减少过程
Shuyuan Zhao1, Jun Yan1, Mengli Chen2
1Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; College of Environment and Ecology, Chongqing University, Chongqing 400045, China.
Bioresource technology
|November 5, 2025
概括
建造的湿地微生物燃料电池 (CW-MFCs) 通过分散性酸盐减少到 (DNRA) 来去除. N-acyl homoserine lactones (AHLs) 通过增加微生物电子转移,提高去除效率来增强这一过程.
科学领域:
- 环境微生物学 环境微生物学
- 废水处理技术 废水处理技术
- 生物地质化学循环的过程
背景情况:
- 构建的湿地微生物燃料电池 (CW-MFCs) 对于从二次废水中去除是有效的.
- 分离性酸盐降解为 (DNRA) 是CW-MFC中的一个关键的转化过程,但其机制尚未完全理解.
研究的目的:
- 研究DNRA在CW-MFC中的分子机制.
- 确定N-类同类素乳 (AHLs) 在增强DNRA和整体去除中的作用.
主要方法:
- 通过DNRA量化生产的氨 (NH4+-N).
- 在NH4+-N和C4-homoserine乳 (C4-HSL) 之间的相关性分析.
- 评估微生物基因表达和社区组成.
- 测量总去除 (TN) 和植物生理参数.
主要成果:
- 通过DNRA,CW-MFCs产生了NH4+-N (3.9 ± 1.8 mg/L),与C4-HSL度正相关.
- 通过增加电子可用性,细胞外电子转移和DNRA相关基因的丰富性 (例如,在Geobacter中),C4-HSL增强了DNRA.
- 与CWs (51.1 ± 4.4%) 相比,CW-MFCs实现了显著更高的TN去除 (76.9 ± 6.4%),与增强的植物生长相关.
结论:
- 这项研究为CW-MFC中AHL介导的DNRA提供了第一个分子洞察力.
- AHLs,特别是C4-HSL,可以增强DNRA并改善CW-MFC系统中的消除.
- 这些发现突出了利用微生物通信来优化废水处理过程的潜力.
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