ASSESSMENT OF PHYSICOCHEMICAL PARAMETERS ON BIOGAS PRODUCTION FROM SOME SELECTED ANIMAL WASTES (POULTRY WASTES AND CATTLE DUNG )

ABSRACTS The varying ratio of substrate has a significant impact on biogas production from agricultural waste such as rice husks and corn cobs. Through the manipulation of substrate ratios, we can optimize the biogas production process and enhance overall efficiencies. During anaerobic digestion, the ratio of substrate influences the availability of nutrients and microbial composition, directly affecting the efficiency of gas production. Higher substrate ratios can lead to increased biogas yield due to the abundance of organic matter available for microbial degradation. However, it is crucial to find the appropriate balance between substrate and water content. If the substrate ratio is too high, it can result in a paste-like consistency, limiting the movement of bacteria and hampering gas production. Conversely, too low of a substrate ratio may not provide sufficient nutrients for optimal microbial activity. The addition of co-substrates like corn cobs can also play a vital role in enhancing biogas production. Corn cobs contribute additional organic matter and can help improve the carbon-to-nitrogen ratio, leading to more favorable conditions for microbial activity and increased gas production. In conclusion, by carefully considering and varying the substrate ratio, along with appropriate moisture content and nutrient balance, we can maximize biogas production from agricultural waste sources like rice husks and corn cobs. Further research and experimentation can help identify the optimal substrate ratios and potential co-substrates for further improving the efficiency and sustainability of biogas production from these agricultural wastes.