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Treatment of Sulfate/Sulfide-Containing Wastewaters Using a Microbial Fuel Cell: Single and Two-Anode Systems |
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| Authors: | Duu-Jong Lee Chin-Yu Lee Jo-Shu Chang Qiang Liao Ay Su |
| Institution: | 1. Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan;2. Department of Chemical Engineering, National Taiwan University, Taipei, Taiwandjlee@ntu.edu.tw;4. Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan;5. Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan;6. Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan, Taiwan;7. Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing, China;8. Institute of Engineering Thermophysics, Chongqing University, Chongqing, China;9. Department of Mechanical Engineering, Yuan Ze University, Chung-li, Taiwan |
| Abstract: | The microbial fuel cell (MFC) was employed to convert reductive potential in sulfate-laden wastewaters to electricity via reducing sulfate to sulfide by sulfate-reducing bacteria and then oxidizing sulfide to sulfur by exoelectrogens. The excess sulfide presented in the anodic solution inhibited the activities of functional strains in MFC. This study proposed the use of a two-anode system, with a sulfate-reducing bacteria anode and an exoelectrogen (C27) anode in the anodic cell, to efficiently convert reductive potential of sulfate into electricity. The microbial community of sulfate-reducing bacteria anode and the electrochemical characteristics of the studied MFCs were reported. |
| Keywords: | Microbial fuel cell Sulfate-reducing bacteria Exoelectrogen C27 Two anodes |