双微生物燃料电池驱动的Fenton电气系统中的电子转移性能和机制,废弃活性污泥作为基板
Jiaqi Lv1, Qingliang Zhao1, Junqiu Jiang1
1State Key Laboratory of Urban-rural Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China.
Bioelectrochemistry (Amsterdam, Netherlands)
|October 28, 2025
概括
这项研究使用双胞胎微生物燃料电池驱动的Fenton电气系统 (双胞胎MFCPEFs) 改进了废物活性污泥处理. 它揭示了改善电子转移和污泥降解的关键微生物机制.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 电化学 电化学 电化学
背景情况:
- 废物活性污泥 (WAS) 处理对于环境可持续性至关重要.
- 微生物燃料电池 (MFC) 为污泥处理和能量回收提供了一个有希望的方法.
- 双微生物燃料电池驱动的Fenton电气系统 (双MFCPEFs) 集成了微生物新陈代谢和Fenton电气过程,以加强WAS处理.
研究的目的:
- 调查使用WAS作为基质的双MFCPEF电子生成和利用的性能和潜在机制.
- 阐明溶性有机物成分在促进生物降解和电子转移中的作用.
- 确定关键的微生物代谢途径和参与增强电力生产的酶.
主要方法:
- 双MFCPEF与WAS作为基质的实验设置.
- 分析可溶有机物成分 (氨基酸,湿性物质).
- 超基因组分析以评估微生物社区结构和代谢功能.
- 测量库伦比效率 (电子生成/回收) 和法拉第效率 (电子利用).
主要成果:
- 较高的库伦比效率 (8.25%) 归因于WAS中氨基酸和湿性物质的增加,促进生物降解和电子转移.
- 更高的法拉第效率 (52.76%) 与增强的电子供应系统相关,驱动自由基氧化.
- 甲基因组数据显示,甘氨基转移酶活性增加,乙酸酶/甲基辅酶M减少酶活性降低,有利于电力生产.
结论:
- 双MFCPEF系统在WAS处理中表现出更高的性能,这是由于优化的电子转移机制.
- 溶性有机物成分显著影响生物降解和发电效率.
- 微生物代谢工程,特别是增强糖转移酶,为改善MFC中的污泥处理和能量回收提供了可行的策略.
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