초록
A combination of a continuous twin screw-driven reactor (CTSR) and a dilute acid pretreatment was used for the pretreatment of biomass with a high cellulose content and high monomeric xylose hydrolyzate. With the newly modified CTSR screw configuration (Config. 3), the influences of the screw rotational speed (30-60rpm), of the pretreatment conditions such as acid concentration (1-5%) and reaction temperature (160-175<SUP>o</SUP>C) at the operating condition of biomass feeding rate (1.0g/min) and acid feeding rate (13.4mL/min) on the pretreatment performance were investigated. The cellulose content in the pretreated rape straw was 67.1% at the following optimal conditions: barrel temperature of 165<SUP>o</SUP>C, acid concentration of 3.0% (w/v), and screw rotational speed of 30rpm. According to the three screw configurations, the glucose yields from enzymatic hydrolysis were 70.1%, 72.9%, and 78.7% for screw Configs. 1, 2, and 3, respectively.