PRETREATMENT METHOD OF LIGNOCELLULOSE-BASED BIOMASS

摘要

PURPOSE: A pretreatment method of a lignocellulose-based biomass is provided to obtain cellulose with high purity and hemicelluloses with the high yield, by extracting lignin first. CONSTITUTION: A pretreatment method of a lignocellulose-based biomass comprises the following steps: adding a solvent dissolving lignin to the lignocellulose-based biomass containing the lignin, hemicelluloses, and cellulose, to extract the lignin from the biomass(S1,S2); and adding an ionic solution to the biomass without the lignin, to extract the hemicelluloses and the cellulose(S3). The solvent dissolving the lignin is an alkaline solvent.