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Substrate salinity: A critical factor regulating the performance of microbial fuel cells, a review
Guo, Fei1,2; Luo, Huiqin1; Shi, Zongyang1; Wu, Yan1; Liu, Hong2
2021-04-01
摘要Substrate salinity is a critical factor influencing microbial fuel cells (MFCs) performance and various studies have suggested that increasing substrate salinity first improves MFC performance. However, a further increase in salinity that exceeds the salinity tolerance of exoelectrogens shows negative effects because of inhibited bacterial activity and increased activation losses. In this review, electricity generation and contaminant removal from saline substrates using MFCs are summarized, and results show different optimal salinities for obtaining maximum performance. Then, electroactive bacteria capable of tolerating saline environments and strategies for improving salinity tolerance are discussed. In addition to ohmic resistance and bacterial activity, membrane resistance and catalyst performance will also be affected by substrate salinity, all of which jointly contribute the final overall MFC performance. Therefore, the combined effect of salinity is analyzed to illustrate how the MFC performance changes with increasing salinity. Finally, the challenges and perspectives of MFCs operated in saline environments are discussed. (C) 2020 Elsevier B.V. All rights reserved.
关键词Microbial fuel cells Substrate salinity Power generation Wastewater treatment Electroactive bacteria
DOI10.1016/j.scitotenv.2020.143021
发表期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
卷号763页码:16
通讯作者Liu, Hong(liuhong@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:000608188700081
语种英语