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- Title
Application of a weak magnetic field to improve microbial fuel cell performance.
- Authors
Tong, Zhong-Hua; Yu, Han-Qing; Li, Wen-Wei; Wang, Yun-Kun; Sun, Min; Liu, Xian-Wei; Sheng, Guo-Ping
- Abstract
Microbial fuel cells (MFCs) have emerged as a promising technology for wastewater treatment with concomitant energy production but the performance is usually limited by low microbial activities. This has spurred intensive research interest for microbial enhancement. This study demonstrated an interesting stimulation effect of a static magnetic field (MF) on sludge-inoculated MFCs and explored into the mechanisms. The implementation of a 100-mT MF accelerated the reactor startup and led to increased electricity generation. Under the MF exposure, the activation loss of the MFC was decreased, but there was no increased secretion of redox mediators. Thus, the MF effect was mainly due to enhanced bioelectrochemical activities of anodic microorganisms, which are likely attributed to the oxidative stress and magnetohydrodynamic effects under an MF exposure. This work implies that weak MF may be applied as a simple and effective approach to stimulate microbial activities for various bioelectrochemical energy production and decontamination applications.
- Subjects
MICROBIAL fuel cells; WASTEWATER treatment; MAGNETIC field effects; MAGNETOHYDRODYNAMICS; OXIDATION-reduction reaction
- Publication
Ecotoxicology, 2015, Vol 24, Issue 10, p2175
- ISSN
0963-9292
- Publication type
Article
- DOI
10.1007/s10646-015-1545-2