BIOETHANOL PRODUCTION FROM WOODY BIOMASS AFTER PRETREATMENT AND ENZYMATIC HYDROLYSIS OF CELLULOSE

The aim of this study was the production of bioetha nol from wood by steam-explosion pretreatment, enzymatic hydrolysis and fermentation of glucose. Separate hydrolysis and fermentation was applied for cellulo se hydrolysis, followed by fermentation with S. cerevisiae. Using H 2SO 4 - impregnated of wood chips in steam pretreatment r in the high ethanol concentration. In this work, th e steam-explosion pretreatment conditions for wood chips were optimized to obtain higher etha nol yield. A commercial enzymes mixture was used for enzymatic hydrolysis of wood.