Journal
BIORESOURCE TECHNOLOGY
Volume 244, Issue -, Pages 452-455Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.07.189
Keywords
Microbial fuel cell; Bioanode; Anodic electron transfer; Power production; Conductive polypyrrole hydrogel; Anthraquinone-2-sulfonate
Funding
- Environment & Water and Industry Development Council, Singapore [MEWR 651/06/159]
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In this study, anthraquinone-2-sulfonate (AQS), a redox mediator, was covalently bound to conductive polypyrrole hydrogel (CPH) via electrochemical reduction of the in-situ-generated AQS diazonium salts. The porous structure and hydrophilic surface of this CPH/AQS anode enhanced biofilm formation while the AQS bound on the CPH/AQS anode worked as a redox mediator. The CPH/AQS bioanode reduced the charge transfer resistance from 28.3 Omega to 4.1 Omega while increased the maximum power density from 762 +/- 37 mW/m(2) to 1919 +/- 69 mW/m(2), compared with the bare anode. These results demonstrated that the facile synthesis of the CPH/AQS anode provided an efficient route to enhance the power production of microbial fuel cell (MFC).
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