Evaluation Of Biogas Production Rate From Agricultural, Sewage And Homemade Wastes

This study investigates the production of biogas using two mini-biodigesters of 120 liters each, within a controlled laboratory environment. The research focuses on evaluating the biogas yield from four distinct feedstocks: sewage waste, pig waste, poultry waste, and homemade waste composed of watermelon and pineapple residues. Each feedstock was used individually and in various combinations to determine their effectiveness as substrates for biogas production. The experimental setup was designed to measure the average daily biogas production rates and methane content over a period of 14 days of maximum production. The results revealed that the average daily biogas production rates (in cubic meters) were as follows: 0.0329 for sewage waste (X1), 0.0372 for pig waste (X2), 0.0354 for poultry waste (X3), and 0.0296 for homemade waste (X4). When combined, the production rates were 0.0362 for sewage and homemade waste (X1+X4), 0.0384 for sewage, pig, and poultry waste (X1+X2+X3), and 0.0410 for the combination of all four feedstocks (X1+X2+X3+X4). In terms of methane content, the findings indicated that the percentages were 54.8% for sewage waste (X1), 58.7% for pig waste (X2), 56.6% for poultry waste (X3), and 51.7% for homemade waste (X4). The combinations showed higher methane content with 68.2% for sewage and homemade waste (X1+X4), 65.5% for sewage, pig, and poultry waste (X1+X2+X3), and 69.3% for the combination of all four feedstocks (X1+X2+X3+X4). These results highlight the potential of utilizing various organic wastes for biogas production, demonstrating that mixed substrates can enhance both the yield and methane content of the biogas. This research contributes to the understanding of biogas production dynamics and provides insights into optimizing feedstock combinations for improved biogas generation