膜科学与技术

阳极施加恒电位对EAM-MFC启动性能改善的研究

作者：梁晶晶¹，²，吴云¹，²，王珍琼¹，²，楚红亮³，韩璐洁²，张宏伟¹，²，孙中芳

单位： 1天津工业大学省部共建分离膜与膜过程国家重点实验室，天津 300387； 2 天津工业大学环境与化学工程学院，天津 300387 3中海油天津化工研究设计院有限公司，天津 300131

关键词：微生物燃料电池；导电曝气阴极；脱氮；恒电位；FISH

出版年,卷(期):页码： 2018,38(6):76-83

摘要：

微生物燃料电池（MFC）普遍存在启动速度慢的现象，且启动方式对阴阳极性能影响较大。本文通过对阳极施加恒电位对比分析了恒电位对以导电曝气膜组件为生物阴极的微生物燃料电池（EAM-MFC）系统启动过程和生物阴极性能作用的影响。结果表明，在系统阳极施加-290 mV恒电位的启动方式较常规方式能够在使系统启动周期缩短的同时明显提升阴极脱氮性能，阴极电势和电池的输出电压分别较常规启动方式提高84 ± 1.51 mV和127 ± 2.09 mV；阴极室COD、氨氮、总氮去除率分别提高32.77 %、10.09 %和21.42 %；此外，外加电位能够刺激阴极生物膜上反硝化微生物的生长。

Microbial fuel cell (MFC) generally has a slow start-up, and the starting mode has great influence on the performance of anode and cathode. In this paper, the effect of constant potential on the starting process of the system and the performance of the biological cathode was analyzed by applying constant potential to the anode. The results showed that the application of constant potentials accelerated the startup process of the system and improved the bio-cathode performance of EAM-MFC. Cathode potential and EAM-MFC output voltage increased by 84 ± 1.51 mV and 127 ± 2.09 mV respectively; the cathode COD, ammonia nitrogen and total nitrogen removal efficiency were increased by 32.77 %, 10.09 % and 21.42 % respectively; and it can stimulate the growth of denitrifying microorganism on the cathode membrane module.

第一作者简介：梁晶晶（1992-），女，河北省大名县人，硕士研究生，废水脱氮和微生物燃料电池， E-mail：619202660@qq.com

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