Bioelectricity from Microbial Fuel Cell Using Wastewater with Carbon/Copper Electrodes
Keywords:Biological oxygen demand removal (BOD) efficiency, Microbial fuel cell, Potassium permanganate
Three dual chamber microbial fuel cells (MFCs) labeled MFC-A, MFC-B and MFC-C were fabricated with agar-agar salt bridge as the proton exchange membrane. Each of the MFCs contained wastewater as catholyte. Biochemical and Physiological tests was carried out on the wastewater sample to obtain characteristics which will be helpful in the identification of microbial species in the sample and measure some physiological parameters. Readings of voltage and current with different resistors of 10Ω, 100Ω and 1000Ω and with no resistor was taken for 10 to 12 hours daily for 14 days.
The power density was calculated for the MFCs. Also, the MFC performance was calculated in terms of various parameters such as Biological Oxygen Demand (BOD), Total Dissolved Solids (TDS), pH, Conductivity and Temperature. MFCs A, B and C showed a maximum voltage output of 0.987V, 1.621V and 1.409V respectively. The maximum power densities for MFCs A, B and C were calculated as 0.329W/cm2, 2.56 x 10-5W/cm2 and 0.00197W/cm2 respectively. The BOD removal efficiency of MFCs A, B and C was calculated as 71.70%, 73.35% and 72.00% respectively.
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