Analysis of methane production efficiency improvement effect by hydrothermal carbonization reaction in combined process of anaerobic digestion and hydrothermal carbonization of livestock manure

Korea produced cattle manure has high energy potential due to its solids content, including sawdust. However, it is difficult use sawdust as a raw material for anaerobic digestion content of non-degradable organic materials. This study used hydrothermal carbonization, one the hydrolysis processes, analyze effect improving methane production efficiency through carbonization using livestock sludge material. The reaction was carried out under temperature conditions 160, 180, 200 and 220°C. As result study, biochemical potentials at 220°C were 0.092, 0.145, 0.206 0.245 Nm3/kg-VSadded. increase in hydrocarbonization reduces matter that can be converted into during process, obtained 1 ton when ADSC hydrocarbonized 3.08, 4.80, 6.49, 6.28 Nm3/ton-ADSC, highest 200°C.