Abstract:The oxidation reduction reaction capability of the microbial fuel cell (microbial fuel cell, MFC) cathode plays a vital role in power generation of MFC. In this study, manganese ferrite/activated carbon (MnFe2O4/AC) was prepared and characterized by material science, and it was used as the cathode catalyst of MFC to explore its effects on electricity generation and sewage treatment of MFC. Results demonstrated that when the molarratio of MnFe2O4 to AC was 1:3, the power density of MFC was the highest, reaching 302.7mW/m². The maintenance time near the peak voltage was up to 200h, which was 4times that of the traditional MFC using Pt/C as the catalyst, and the coulombic efficiency reached 17.45%. Moreover, in the reusability test of catalyst, the voltage of the MFC using the Pt/C catalyst dropped significantly, while the voltage of the MFC using the MnFe2O4/AC catalyst remained basically stable during the same running time indicating good cycle stability of the MnFe2O4/AC catalyst. In terms of sewage treatment effect, the highest treatment efficiency was 74.66% when the molar ratio of MnFe2O4/AC was 1:3. Therefore, the MnFe2O4/AC catalyst is simple to prepare, low in price, and stable in electrochemical performance, which has practical significance in improving the durability of MFC power generation.
王林, 吴可, 王成业, 李燕. 铁酸锰活性炭阴极催化剂的制备与对微生物燃料电池产电性能的影响[J]. 中国环境科学, 2022, 42(6): 2638-2646.
WANG Lin, WU Ke, WANG Cheng-ye, LI Yan. Preparation of manganese ferrite activated carbon cathode catalyst and its effect on the electricity generation performance of microbial fuel cells. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(6): 2638-2646.
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