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IJEB Vol.50(06) [June 2012] >


Title: Microbial fuel cells demonstrate high coulombic efficiency applicable for water remediation
Authors: Devasahayam, Mercy
Masih, Sam A
Keywords: Bioelectricity
Bioremediation
Coulombic efficiency
E. coli
MFC
Issue Date: Jun-2012
Publisher: NISCAIR-CSIR, India
Abstract: Microbial fuel cells (MFCs) convert biomass into electricity by the metabolic activity of microorganisms and are also used for remediation and water treatment. Power output was compared for a dual chambered membrane MFC using either E. coli or two Yamuna river samples, Yamuna (before the Sangam region)­­—­­slow flow (sample 1) and Sangam region —fast flow (sample 2). E. coli and the two river water samples 1 and 2 gave a maximum voltage of 779, 463 and 415 mV respectively. Using E. coli the maximum power density obtained with a 100 Ω resistor was 220.66 mW/cm2 and the highest power generated 6068.41 mW. The results demonstrate E. coli, river sample 1 and river sample 2 have a comparable coulombic efficiency of 85.2, 71 and 77% respectively when using 0.4% sucrose as substrate. The decrease in chemical oxidative demand of all river water samples using MFC technology demonstrates efficient remediation of inland water.
Page(s): 430-438
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-1009 (Online); 0019-5189 (Print)
Source:IJEB Vol.50(06) [June 2012]

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