School of Engineering, University of British Columbia, Okanagan Campus, 1137 Alumni Avenue, Kelowna, British Columbia, V1V 1V7, Canada.
Faculty of Science and Engineering, University of Northern British Columbia, 3333 University Way, Prince George, British Columbia, V2N 4Z9, Canada.
J Environ Manage. 2022 Aug 1;315:115152. doi: 10.1016/j.jenvman.2022.115152. Epub 2022 May 4.
This study reports on a meta-analysis covering the impact of design and operating factors on published MFC performance data to inform MFC research and implementations. Factors of substrate composition, operating phase, electrode material, configuration, and pre-treatments employed were considered. The meta-analysis results indicate that dual-chamber MFCs overall achieve 18% higher COD removal and 73% higher coulombic efficiencies over that of single-chamber MFCs. MFCs using a solid operating phase achieved ˃38% higher coulombic efficiencies than those using a liquid operating phase. Statistical analyses comparing brush vs flat surface anodes revealed that brush anodes can achieve 130% higher power density than flat surface anodes. The use of a platinum catalyst was found to improve power density, as opposed to catalyst-free cathodes. However, coulombic efficiency is less likely to be influenced by the catalyst used and more likely to be dependent on the inclusion of a membrane separator. The meta-analysis results indicate that even in the presence of expensive catalysts like platinum, membrane separators are of prime importance to maintain a stable MFC operation on a long-term basis and achieve high coulombic efficiency in an MFC. Results presented in this paper outline the impact of MFC design choices on performance and can be used to guide future MFC research. These findings can be beneficial for municipalities as it provides a pathway for future MFC design and optimization by analyzing critical associations between MFC response parameters and multiple varying factors.
本研究报告对涵盖设计和操作因素对已发表的 MFC 性能数据影响的元分析进行了综述，旨在为 MFC 研究和实施提供信息。研究考虑了基质组成、操作阶段、电极材料、配置和预处理等因素。元分析结果表明，双室 MFC 在 COD 去除率方面总体比单室 MFC 高 18%，在库仑效率方面高 73%。采用固态操作相的 MFC 的库仑效率比采用液态操作相的 MFC 高>38%。对刷状和平面阳极的统计分析表明，刷状阳极的功率密度比平面阳极高 130%。使用铂催化剂被发现可以提高功率密度，而无催化剂的阴极则不行。然而，库仑效率不太可能受到催化剂的影响，而更可能取决于膜分离器的包含。元分析结果表明，即使使用昂贵的催化剂（如铂），膜分离器对于在长期基础上保持 MFC 的稳定运行和实现 MFC 中的高库仑效率也是至关重要的。本文提出的结果概述了 MFC 设计选择对性能的影响，可用于指导未来的 MFC 研究。这些发现对于市政当局来说是有益的，因为它通过分析 MFC 响应参数与多个变化因素之间的关键关联，为未来的 MFC 设计和优化提供了途径。
