Bioelectricity Generation in Mediator -Less Microbial Fuel Cell: Application of Pure and Mixed Cultures
Publish place: Iranica Journal of Energy and Environment، Vol: 3، Issue: 2
Publish Year: 1390
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJEE-3-2_001
تاریخ نمایه سازی: 1 اردیبهشت 1393
Abstract:
Microbial fuel cell (MFC) is an emerging biotechnology which converts the organic substrates to electricity by electrogenic bacteria. In this study electricity generation was evaluated in a dual chamberedmediator-less microbial fuel cell. Graphite plates were used as electrodes. Glucose with initial concentration of 4 g.l was used as an electron donor. Anode chamber of the fabricated MFC was inoculated _ with two mixed cultures; anaerobic effluent of dairy manufacture (called A) and anaerobic effluent of wastewater treatment plant (called B). Saccharomyces cerevisiae PTCC 5269 was used as a pure culture. Power generation using these three inoculums was evaluated in the same condition including room temperature, without agitation and using glucose with initial concentration of 4 g.l _ as substrate. The performance of MFC was analyzed by the measurement of polarization curve. Maximum power and current densities of 30.99 mW.m_ and 391.68 mA.m_ ; 25.90 mW.m_ and 320.7604 mA.m_ were obtained when culture B and A were used as inoculums, respectively. Power and current densities were 10.0224 mW.m and 253.2964 mA.m when S. cerevisiae was used as a pure culture in MFC. With chemical oxygen demand (COD), removal efficiencies of 54, 71 and 75 % were achieved using S. cerevisiae, mix cultures A and B as inoculums, respectively. The investigation was targeted for the capability of mediator-less microbial fuel cell as combined wastewater treatment and electricity production unit
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Authors
s Fatemi
Biotechnology Research Lab. Faculty of Chemical Engineering,Noshirvani University, Babol, Iran
a.a Ghoreyshi
Biotechnology Research Lab. Faculty of Chemical Engineering,Noshirvani University, Babol, Iran
g Najafpour
Biotechnology Research Lab. Faculty of Chemical Engineering,Noshirvani University, Babol, Iran
m Rahimnejad
Biotechnology Research Lab. Faculty of Chemical Engineering,Noshirvani University, Babol, Iran