Authors : Jai Prakash , Chandan Kumar, Arbind Kumar
Abstract- In recent year, increased environmental awareness and energy shortages have encouraged researchers to investigate the possibility of using alternate fuels. The purpose of finding the alternate sources is to minimize the consumption of conventional fossil fuels and in turn to reduce the degradation of environmental quality to a great extent. The use of bio-based fuels like biogas produced from biomass or bio-wastes is a valuable energy source which is sustainable and can be manufactured from locally available waste streams thereby solving the problem of waste disposal. Local wastes (organic wastes) contain enough energy to contribute significantly to energy supply system especially in the rural regions of developing countries. Biogas is a clean and environment friendly fuel produced from anaerobic digestion of agro, animal or human wastes. The biogas has about 60% methane and 40% carbon dioxide with small traces of H2S. The large quantity of CO2 present in raw biogas however, lowers its calorific value, flame velocity and flammability limit. The presence of H2S leads to formation of SO2 which combines with the water vapour to form acids and hence corrode the metals.
