Generation of Power by Microbial Fuel Cell with Ferricyanide in Biodegradation of Benzene |
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| Authors: | Chih‐Hung Wu Chi‐Yung Lai Chi‐Wen Lin Min‐Hsiu Kao |
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| Institution: | 1. Graduate School of Engineering Science and Technology, National Yunlin University of Science and Technology, Douliou, Yunlin, Taiwan, Republic of China;2. Graduate Institute of Biotechnology, National Changhua University of Education, Changhua, Taiwan, Republic of China;3. Department of Safety, Health and Environmental Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin, Taiwan, Republic of China |
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| Abstract: | The power generation potential of a microbial fuel cell (MFC) during the process of benzene biodegradation with potassium ferricyanide (0–200 mM) as the terminal electron acceptor was evaluated. Experimental results demonstrate that benzene was used as the sole carbon source in generating electricity by a mixed culture. The power density increased from 0.0276 to 2.1 mW m?2 as the concentration of potassium ferricyanide in the cathode chamber was increased from 0 to 200 mM. With a benzene concentration of 10.87 mg L?1 and a potassium ferricyanide concentration of between 0 and 150 mM, complete degradation of benzene was achieved in 22–24.5 h. However, when the concentration of potassium ferricyanide was raised to 200 mM, the time required for complete benzene degradation was prolonged to 35 h. The results of this investigation can be used as a basis for future assessments of the power generation capacity of MFCs that are used to treat benzene‐contaminated wastewater. |
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| Keywords: | Anaerobic process Electrochemical system Exoelectrogen MFC technology Wastewater treatment |
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