期刊
INTERNATIONAL JOURNAL OF ENVIRONMENTAL TECHNOLOGY AND MANAGEMENT
卷 23, 期 1, 页码 50-67出版社
INDERSCIENCE ENTERPRISES LTD
DOI: 10.1504/IJETM.2020.110159
关键词
bioaugmentation; ceramics separator; cyclic voltammetry; microbial fuel cell; MFC; synergistic association; wastewater treatment
Single-chambered microbial fuel cells (MFCs) were inoculated with different proportions ofShewanella putrefaciensand mixed-anaerobic sludge, viz. 100:0% (MFC-1), 0:100% (MFC-2), 10:90% (MFC-3), 30:70% (MFC-4) and 50:50% (MFC-5). Performance of these MFCs was evaluated using different electrochemical analyses. Due to specific substrate-selectivity, MFC-1 showed lower power (1.22 W.m(-3)) than MFC-2 (2.15 W.m(-3)). Power performance increased from 2.21 (MFC-3) to 2.56 W.m(-3)(MFC-4) with increased fraction ofShewanellafrom 10 to 30% in the inoculum, and power density further enhanced to 3.1 W.m(-3)in MFC-5 inoculated with equal-fraction ofShewanellaand mixed sludge. Bioelectrochemical analyses showed higher electron transfer rate and lower charge-transfer resistance in MFC-5 due to synergy between both the inoculums and promoted the electron transfer at anode. Thus, inoculation of MFC with equal-fraction of mixed-anaerobic sludge andShewanellashowed effective bio-augmentation to improve the anodic bioactivity and power generation from MFC.
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