Optimization on Methane Generation in Anaerobic Digestion of Kitchen Waste

Influences of temperature,moisture content,inoculums rates and pH on anaerobic digestion of kitchen waste recycling methane were studied by orthogonal tests,in which the affecting order of the factors and optimal technological conditions were confirmed.Single factor experiments were done to verify the conclusion.Experimental results showed that the optimal conditions of anaerobic digestion were temperature 55℃,pH 7,inoculums rate 30%,moisture content 8%and affecting order of the factors as temperature,pH,inoculums rates and total solid content.The methane yield at the optimal conditions reached 633.8 mL/gVS food waste.