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The Harnessing Of Bioenergy From A Dual Chambered Microbial Fuel Cell (Mfc) Employing Sago-Processing Wastewater As Catholyte

The application of microbial fuel cell (MFC) for wastewater treatment is an emerging strategy for the simultaneous treatment of pollutants and generation of electricity. The feasibility of utilizing sago-processing wastewater as a catholyte and comparing it with synthetic catholyte was investigated using dual-chambered salt bridge MFCs. The wastewater catholyte was again varied as with and without sago sludge inoculation, and the effect of sludge addition on MFC performance was determined. Three dual-chambered salt bridge MFCs namely synthetic catholyte (MFC-SC), wastewater catholyte (MFC-WC), and Sludge inoculated wastewater catholyte (MFC-WS) were designed and their performance was compared. Synthetic catholyte was the best in power generation than the other two MFCs and it documented maximum open circuit voltage of 0.35 V and closed circuit voltage of 0.31 V. Sludge inoculated wastewater catholyte (MFC-WS) was better compared to wastewater catholyte (MFC-WC) in power generation with a maximum degradation in chemical oxygen demand of 80.4% and total removal of carbohydrates and starch. The attachment of bacteria on graphite electrode was observed using Scanning Electron Microscope (SEM). The results evidently demonstrated that wastewater catholyte can be a promising alternative to synthetic and chemical catholyte.