期刊
LETTERS IN APPLIED MICROBIOLOGY
卷 75, 期 4, 页码 785-795出版社
OXFORD UNIV PRESS
DOI: 10.1111/lam.13612
关键词
bioremediation; CETP wastewater; COD reduction; electrogenic bacteria; mediator-less microbial fuel cell; series-parallel connection; voltage output
资金
- Nirma University [NU/Ph.D. /Major Res Pro/IS-IT/18-19/01]
- Gujarat State Biotechnology Mission (GSBTM), Gandhinagar [GSBTM/JDRD/604/2019/305]
Microbial fuel cell (MFC) is an emerging technology for wastewater treatment and electricity generation; MFC with electrode biofilm performs better; a novel consortium of bacteria shows promise in treating wastewater containing sodium benzoate.
Microbial fuel cell (MFC) is an emerging technology which has been immensely investigated for wastewater treatment along with electricity generation. In the present study, the treatment efficiency of MFC was investigated for hydrocarbon containing wastewater by optimizing various parameters of MFC. Mediator-less MFC (1 center dot 2 l) was constructed, and its performance was compared with mediated MFC with Escherichia coli as a biocatalyst. MFC with electrode having biofilm proved to be better compared with MFC inoculated with suspended cells. Analysis of increasing surface area of electrode by increasing their numbers indicated increase in COD reduction from 55 to 75%. Catholyte volume was optimized to be 750 ml. Sodium benzoate (0 center dot 721 g l(-1)) and actual common effluent treatment plant (CETP) wastewater as anolyte produced 0 center dot 8 and 0 center dot 6 V voltage and 89 and 50% COD reduction, respectively, when a novel consortium of four bacterial strains were used. Twenty MFC systems with the developed consortium when electrically connected in series-parallel connection were able to generate 2 center dot 3 V and 0 center dot 5 mA current. This is the first report demonstrating the application of CETP wastewater in the MFC system, which shows potential of the system towards degradation of complex organic components present in industrial wastewater.
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