Utilization of Agricultural Wastes for Biogas Production

The study investigates the anaerobic digestion in the production of biogas from the co-digestion of three different types of agricultural wastes (Acha straws, maize stalk and maize cob) with (cow dung and goat dropping) as nutrients. All the digesters were mixed with these substrate-nutrient ratios of4:1.The results obtained from the biogas production showed that the co-digestion of Digester C (maize stalk and cow dung) gave the highest yield of biogas of 280ml,followed by the co-digestion of the four ratios, digester B maize stalk and goat dropping 260ml, digester D (Acha straws and cow dung) of 260ml, digester A (maize cob and cow dung) 260ml and finally digester E(maize cob and goat dropping) produced the least volume of 46ml. The results of daily and cumulative volume of biogas produced were recorded. The rate of biogas production from these substrates and nutrients followed first order kinetics. These results show that biogas production can be enhanced from agricultural wastes.