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外部电路加载模式调节阳极生物膜电化学和微生物燃料电池中的污染物去除

Han Xu¹, Xiao-Li Yang¹, Zhi-Hao Zhang¹

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

Bioresource technology

|August 17, 2024

概括

外部电路控制优化微生物燃料电池 (MFCs) 的污染物清除和发电. 间歇性加载提高了性能并减轻了毒性,这表明了可持续能源和废水处理的有希望的战略.

科学领域:

环境科学环境科学
电化学电化学电化学
微生物学微生物学

背景情况:

微生物燃料电池 (MFC) 为废水处理和能源发电提供了一种可持续的方法.
外部电路负载显著影响MFC性能,影响输出功率和污染物降解.
持久性有机污染物,如硫甲醇 (SMX),由于生物毒性,对MFC的效率构成挑战.

研究的目的:

调查不同外部电路负载模式对MFC污染物清除和发电的影响.
评估间歇性外部电阻 (IER) 负载在减轻SMX毒性和提高MFC性能方面的有效性.
探索负载模式对微生物社区结构和抗生素耐药性基因积累的影响.

主要方法:

在不同的外部电路负载条件下对MFC性能进行比较,包括连续和间歇电阻负载.
测量最大功率密度 (Pmax),化学氧需求 (COD) 和NH4+-N去除效率.
微生物群落的分析,包括电化学活性细菌 (EAB) 和抗生素耐药性基因 (ARG) 的丰富性.

主要成果:

减少外部负载以匹配内部阻力,使低功率MFC (MFC-LP) 的Pmax增加了54.47%,但对高功率MFC (MFC-HP) 的影响很小.
IER加载减轻了SMX毒性,在MFC-HP中保持高Pmax (424.33mW/m2),并改善了COD和NH4+-N去除.
IER模式促进了EAB和Advenella的丰富,可能减少ARG的积累.

结论:

外部电路控制是优化MFC电化学特性和污染物去除的有效策略.
IER加载是一种可行的方法,可以提高MFC的性能,对污染物的弹性和微生物社区的稳定性.
这种方法有望在可持续能源和环境修复应用中推进MFC技术.

关键词:

抗生素抗生素是一种抗生素.生物电化学系统生物电化学系统微生物社区的微生物社区.发电的发电方式是:发电.电阻负载模式的电阻负载模式

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