期刊
PROCESS BIOCHEMISTRY
卷 48, 期 12, 页码 1947-1951出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.procbio.2013.09.008
关键词
Microbial fuel cells; Coulombic efficiency; Bioelectricity; Immobilization; Alginate; Shewanella
资金
- Jiangsu University [12JDG072]
- 'Six Talent Peaks' program (Jiangsu Province, China) [2012-NY-029]
- National Natural Science Foundation of China (NSFC) [21306069]
- Natural Science Foundation of Jiangsu Province [BK20130492]
- Priority Program Development of Jiangsu Higher Education Institutions (China)
- National Basic Research Program of China (973 Program) [2013CB733600]
- National High Technology Research and Development Program (863 Program) [2012AA02A701]
- AcRF Tier-1 (Singapore) [RG78/10]
- AcRF Tier-2 (Singapore) [ARC3/12]
- CRP grant (Singapore)
Coulombic efficiency and stability of electricity output are crucial for practical applications of microbial fuel cells (MFCs). In this study, a cell immobilization method for electrogenic microorganism in MFCs using graphite/alginate granules is developed. The MFC with immobilized cell granules delivered a much more stable electricity output than that with suspension cells, and resulted in a similar to 0.8 to 1.7 times improvement on coulombic efficiency compared to the suspension mode. Impressively, with the conductive graphite/alginate/cells granules, the internal resistance of the MFC decreased dramatically. Moreover, the cell immobilized MFC showed a much higher tolerance to the shock of high salt concentration than the MFC with suspension cells. The results substantiated that immobilization of electrogenic microorganism for MFCs could be achieved by the method developed here, and it is promising for practical application in energy harvesting from wastewater by MFCs. (C) 2013 Elsevier Ltd. All rights reserved.
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