Production of Biogas from Different Ratios of Rice Husk and Kitchen Waste [ ]


Production of biogas produced from different ratio of rice husk and kitchen waste was conducted under anaerobic conditions. The experiment included loading three different mix ratios of 3:1, 1:3 and 1:1 of rice husks and kitchen waste respectively diluted with the same amount of water before being mixed in varied proportions. 75g of rice husks and 25g of kitchen waste was mixed with water and loaded into digester A. 25g of rice husks and 75g of kitchen waste was mixed with water and loaded into digester B. Finally, 50g of rice husks and 50g of kitchen waste was mixed with water and loaded into digester C. Each treatment was performed once. Biogas production was measured for a period of 14 days and the volume of gas produced was determined by water displacement method at different temperatures. Biogas production started on the 2nd day, and reached apex on the 9th day for digester A. For digester B, biogas production started on the 1st day and attained maximum on 9th day. Production reached its peak on the 9th day for digester C. The total gas production for digesters A, B and C were 19.30ml, 28.42ml, and 24.94ml respectively at different temperature. The study shows that the largest volume of biogas production was obtained using the 1:3 mix ratio of rice husks and kitchen waste, while also the 1:1 mix ratio of rice husks and kitchen waste as compared to 1:3 mix ratio respectively has more yield. Therefore, kitchen waste is effective for the production of biogas than rice husks. Finally, for a developing country like Nigeria, where wastes are not productively used, wastes generated from animals and plant wastes can be effectively managed through conversion into biogas. Wastes are therefore turned to wealth which increases the income generation of the society.