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增强阳极内在电容可以提高微生物燃料电池在废水处理中的性能

Han Xu¹, Xiao-Li Yang¹, Hui-Ping Liu²

¹School of Civil Engineering, Southeast University, Nanjing, 211189, China.

Journal of environmental management

|June 24, 2025

概括

通过电双层 (EDL) 电容性阳极增强微生物燃料电池 (MFC),可显著提高废水处理中的发电和化学氧气需求 (COD) 清除. EDL阳极的性能优于伪电容性阳极,为能源发电和污染物清理提供了有前途的双重功能.

科学领域:

电化学电化学电化学
环境科学环境科学
生物技术是生物技术.

背景情况:

微生物燃料电池 (MFC) 正在探索废水处理,但阳极性能限制了它们的效率.
电容阳极为改善MFC性能提供了潜力,但电容类型之间的比较缺乏.

研究的目的:

为了比较MFC性能的电双层 (EDL) 和伪电容性阳极.
评估阳极电容对发电和污染物去除的影响.
以电容阳极来阐明增强MFC性能背后的机制.

主要方法:

EDL和伪电容性阳极的制造和表征.
使用不同阳极的MFC的性能评估,测量功率密度和污染物去除 (COD,SMX).
对微生物群落,电化学活性 (ATP,DHA) 和与性能相关性的分析.

主要成果:

与伪电容性阳极 (5.10 F/g) 相比,EDL阳极具有显著更高的特定电容 (27.95 F/g).
使用EDL阳极的MFC实现了更高的最大功率密度 (561.09mW/m2) 和更好的COD去除 (>80%).
电容阳极通过增加电容电流,电化学活性细菌 (EAB) 丰富度,ATP含量和脱酶活性来增强发电.

结论:

提高阳极内在电容,特别是EDL电容,对于提高MFC性能至关重要.
容量阳极为开发MFC作为用于发电和废水处理的双重功能设备提供了一个可行的策略.
这项研究为设计高效MFC应用的先进电极提供了洞察力.

关键词:

阳极特定电容的电容.生物电化学系统生物电化学系统电容电流的电容电流是什么微生物社区的微生物社区.污染物去除污染物去除

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