Study of The Effect of pH on The Performance of Microbial Fuel Cell for Generation of Bioelectricity

Abstract

Background: Day by day microbial fuel cell (MFC) technology is becoming a thought-provoking topic to the researcher because for its simultaneous utilization e.g. electricity production and wastewater treatment. Since wastewater is an important source of electrolyte for MFC, the key tenacity of this study was to investigate the outcome of pH happening various (Municipal, Bhairab river and Hospital) wastewaters used as electrolyte in dual chamber MFC.Findings: The lab-scale experiment was conducted in batch mode, where zinc plate (0.0027m2) as anode and copper plate (0.0027m2) as cathode. In this study a single electrolyte (any one of earlier mentioned three electrolytes) was used in five dual-chambers MFC where the pH of the electrolyte was 6, 7, 8, 9 and 10. The MFC was worked on a temperature ranged from 27°C to 34°C. Maximum outputs were found in terms of current density (1288.9mAm-2), voltage (1132 mV) and power density (1459.02wmw-2) were obtained at pH 8 by using Bhairab river water as an electrolyte in MFC chamber. A substantial amount of COD removal (94%) was also achieved in the same MFC chamber at the same pH (i.e. pH 8). However, the optimum operating pH for MFC containing municipal wastewater and hospital wastewater was found to be 8 and 9, respectively.Conclusion: The results suggest that various wastewaters may act as feasible feedstocks for bioelectricity generation in MFC. The results also show that COD can be removed from wastewater that suggest a treatment possibility of wastewater.

Generation of Electricity Through Papaya Waste at Different pH

“…Meanwhile, the other cells showed lower values: the MFC with pH 4 generated the lowest value (0.72 V), approximately 41.67% less than the MFC with pH 7; on the other hand, all MFCs showed voltage drops in the last days of monitoring. The increases in the voltage values are due to the carbonaceous compounds present in the waste used, but the variations in the values in the different cells observed are mainly due to the adjusted pH for each MFC since the microorganisms depend on the pH present in their environment (Halim et al, 2021;De La Cruz Noriega et al, 2021;. In Fig.…”

Effect of Anolyte pH on the Performance of a Dual-Chambered Microbial Fuel Cell Operated with Different Biomass Feed

“…Parameters such as pH, electrode constituents, the space between the electrodes, external resistance, temperature, conductivity, and biological matter of the residue are reported to affect the electricity generation of the microbial fuel cell [19][20][21]. e performance of the MFC increased for long-term operation when the electrogenic biofilm formed on the electrode surface.…”