How many kilograms of pig manure needed to produce one cubic meter of methane gas?

To produce one cubic meter of methane gas, approximately 25-30 kilograms of pig manure is typically required. This can vary based on factors such as the composition of the manure and the efficiency of the anaerobic digestion process used for methane production. Overall, the conversion efficiency can be influenced by the specific conditions and technologies implemented in the digestion process.