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Effect of Polypyrrole-Fe 3 O 4 Composite Modified Anode and Its Electrodeposition Time on the Performance of Microbial Fuel Cells

Author

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  • Liping Fan

    (College of Information Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
    College of Environment and Safety Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China)

  • Yaobin Xi

    (College of Environment and Safety Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China)

Abstract

Anode modification is a useful method to increase the performance of microbial fuel cells (MFCs). By using the electrochemical deposition method, Fe 3 O 4 and polypyrrole (PPy) were polymerized on a carbon felt anode to prepare Fe 3 O 4 -PPy composite modified anodes. In order to ascertain the effect of electrodeposition time on characteristics of the modified electrode, the preparation time of the modified electrode was adjusted. The modified anodes were used in MFCs, and their performances were evaluated by analyzing the electricity generation performance and sewage treatment capacity of MFCs. Experimental results indicated that the Fe 3 O 4 -PPy composite modified anodes could enhance the power production capacity and sewage treatment efficiency of MFC effectively. In particular, when the deposition time was 50 min, the modified anode could significantly improve the MFC performance. In this case, the steady-state current density of MFC increased by 59.5% in comparison with that of the MFC with an unmodified carbon felt anode, and the chemical oxygen demand (COD) removal rate was 95.3% higher than that of the unmodified anode. Therefore, the Fe 3 O 4 -PPy composite is an effective material for electrode modification, and a good anode modification effect can be obtained by selecting the appropriate electrodeposition time.

Suggested Citation

  • Liping Fan & Yaobin Xi, 2021. "Effect of Polypyrrole-Fe 3 O 4 Composite Modified Anode and Its Electrodeposition Time on the Performance of Microbial Fuel Cells," Energies, MDPI, vol. 14(9), pages 1-10, April.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:9:p:2461-:d:543484
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    References listed on IDEAS

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    1. Liping Fan & Junyi Shi & Tian Gao, 2020. "Comparative Study on the Effects of Three Membrane Modification Methods on the Performance of Microbial Fuel Cell," Energies, MDPI, vol. 13(6), pages 1-11, March.
    2. Feng, Tian-tian & Yang, Yi-sheng & Xie, Shi-yan & Dong, Jun & Ding, Luo, 2017. "Economic drivers of greenhouse gas emissions in China," Renewable and Sustainable Energy Reviews, Elsevier, vol. 78(C), pages 996-1006.
    3. Hindatu, Y. & Annuar, M.S.M. & Gumel, A.M., 2017. "Mini-review: Anode modification for improved performance of microbial fuel cell," Renewable and Sustainable Energy Reviews, Elsevier, vol. 73(C), pages 236-248.
    4. Dawid Nosek & Piotr Jachimowicz & Agnieszka Cydzik-Kwiatkowska, 2020. "Anode Modification as an Alternative Approach to Improve Electricity Generation in Microbial Fuel Cells," Energies, MDPI, vol. 13(24), pages 1-22, December.
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    2. Agnieszka Cydzik-Kwiatkowska & Dawid Nosek, 2022. "Advances in Microbial Fuel Cell Technologies," Energies, MDPI, vol. 15(16), pages 1-3, August.

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