Microbial fuel cell (MFC) is one of the promising fuel cell technologies. MFCs offer a breakthrough for the treatment of wastewater coupled with energy generation. However, their applications are mostly limited to laboratories. Present research is focused on conducting the biological treatment of wastewater originated from fermentation industry using microbial fuel cell (MFC) through the microbes to achieve the wastewater treatment as well as renewable energy generation. The efficiency of MFC was studied at different operating and nutritional conditions, including pH, temperature, aeration rate and substrate concentration with biocatalyst Saccharomyces servisa. The open-circuit maximum voltage generated 2100 mv and using 50 Ω resister given 1800 mv. Numerous parametric effect was measured by altering the value of aeration rate from 20-35 mL/min with 5 mL/min step size; pH from 6-9 with step size pH 1, and substrate from 25-100% with step size 25%. From above discussed parameter power and current density were maximum at pH 8 about 725 mv/l and 350 mA. Results suggested that utilization of fermented sludge in MFC could give direction to handle the problem of fermentation industries and also to overcome a small fraction of energy crisis.
Keywords:Electricity generation, Primary fermented sludge, Microbial fuel cell