[Performance of Treating Straw and Animal Manure Mixture by an Integrated Process of Thermo-alkali-bi-enzyme Hydrolysis-anaerobic Digestion and Conditions of High Methane Yield].

To obtain a high methane yield during the anaerobic digestion of a straw and animal manure mixture, an integrated process of thermo-alkali-bi-enzyme hydrolysis-anaerobic digestion was proposed. A mixture of corn straw and cattle manure was selected as the experimental object. A higher dissolution efficiency of cellulose, hemicellulose, and protein in the thermo-alkali pretreatment, dosages and hydrolysis times of cellulase and protease in the bi-enzyme hydrolysis, and the methane yield and biogas production cycle in the anaerobic digestion with mixed slurry and hydrolysates were investigated respectively.