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Factors affecting the performance of microbial fuel cells for sulfur pollutants removal

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Abstract

A microbial fuel cell (MFC) has been developed for removal of sulfur-based pollutants and can be used for simultaneous wastewater treatment and electricity generation. This fuel cell uses an activated carbon cloth + carbon fibre veil composite anode, air-breathing dual cathodes and the sulfate-reducing species Desulfovibrio desulfuricans. 1.16 g dm-3 sulfite and 0.97 g dm-3 thiosulfate were removed from the wastewater at 22 °C, representing sulfite and thiosulfate removal conversions of 91% and 86%, respectively. The anode potential was controlled by the concentration of sulfide in the compartment. The performance of the cathode assembly was affected by the concentration of protons in the cation-exchanging ionomer with which the electrocatalyst is co-bound at the three-phase (air, catalyst and support) boundary. © 2008 Elsevier B.V. All rights reserved.

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Zhao, F., Rahunen, N., Varcoe, J. R., Roberts, A. J., Avignone-Rossa, C., Thumser, A. E., & Slade, R. C. T. (2009). Factors affecting the performance of microbial fuel cells for sulfur pollutants removal. Biosensors and Bioelectronics, 24(7), 1931–1936. https://doi.org/10.1016/j.bios.2008.09.030

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