期刊
BIORESOURCE TECHNOLOGY
卷 172, 期 -, 页码 429-432出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.09.014
关键词
Percarbonate; Microbial fuel cell; Bioelectrochemical system; Cathode; Catholyte
资金
- Office of Naval Research (ONR) [N000141310901]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1419938] Funding Source: National Science Foundation
Sustainable cathode development has been a challenge for the emerging microbial fuel cell (MFC) technology. This study presents a simple catholyte called sodium percarbonate to serve as a new type of electron acceptor for MFCs. Lab scale comparisons showed sodium percarbonate cathode obtained comparable power density (9.6 W/m(3)) with traditional air-cathode and potassium ferricyanide, but percarbonate showed multiple additional benefits that no other catholyte had demonstrated. Percarbonate has a sustaining natural buffering capacity that can counter pH fluctuations seen in many other systems, and the peroxide produced prevents bio-fouling problems associated with air-cathodes. It is also safer to use and has the lowest cost among popular cathode options based on per mole of electron transferred, which makes it a good candidate for modular system scale up. (C) 2014 Elsevier Ltd. All rights reserved.
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