ABSTRACT
Energy demand in rural areas of developing countries has driven researchers toward harnessing energy sources available to them. One of those recognized sources available in rural areas is waste organic materials. This present work examines the continuous process method of biogas production from cattle wastes at various conditions under anaerobic digestion. Biogas technology enables rural dwellers to obtain cheap, highgrade fuel as well as organic fertilizer through the resources available to them locally. 14 , 16 A biogas program helps to solve environmental problems arising from the disposal of organic waste materials. Treatment of sewage would improve the quality of drinking water supply. Biogas technology helps to conserve foreign exchange for energy importing countries. This work mainly focuses on the production and purification of biogas from biodegradable waste, in this connection, the cow dung was used as a raw material and it was digested in the designed anaerobic digester. The biogas and fertilizer were produced and raw biogas was purified by using 382designed sections such as steel wool column, CO2 scrubber, and silica gel column. The test results show that the biogas was produced with respect to the number of days at ambient conditions. The methanogenic bacterium is more active at moderate temperatures. Methane composition is higher after purification when compared with raw biogas. The digested effluent sludge is a high-quality organic fertilizer, which is richer than inorganic manure, and it fixes well in the soil.
