Biogas Production Potential of Co-Digestion of Pig Droppings with Cow Dung Under Tropical Conditions

The biogas production potential of animal wastes offers sustainable biogas production, cleaner environment and economic benefits. This work is an investigation into the best blend leading to higher biogas production from two major animal wastes for improved biogas production. The study of biogas production potentials was conducted for pig droppings (PGD) with cow dung (CD) in different mixture ratios of 100: 00, 75: 25, 50: 50, 25:75 and 00:100 to determine the optimum mixture ratio in a 30 litres digesters. The results revealed that 50%PGD + 50%CD is the optimum mixture ratio for the selected animal waste. The first order kinetic model used in the study adequately fitted the experimental data for the digesters.