초록
<P><B>Abstract</B></P> <P>Rice husk as an abundant biomass was used in this study, and it contained 30.1% glucan and 13.5% xylan, 22.4% lignin. The pretreated rice husk with glycerol carbonate and acidified aqueous glycerol (10% water) at 90°C and 130°C for 60min had the maximum yield of glucan digestibility which was 78.2% and 69.7% respectively, using cellulase for 72h. The simultaneous saccharification and fermentation was conducted anaerobically at 37°C with Saccharomyces cerevisiae, 5% w/v glucan and 10FPU/g glucan of cellulase. 11.58 and 8.84g/L was the highest ethanol concentration after 3days of incubation form pretreated rice husk with glycerol carbonate and acidified aqueous glycerol respectively.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Glycerol carbonate solvent as a novel pretreatment was performed on rice husk. </LI> <LI> A small portion of acids as a catalyst mixed with the pretreatment solvents. </LI> <LI> AGC treatment improved glucan digestibility and lignin removal more than AAG treatment. </LI> <LI> Ethanol production of 11.58 and 8.84g/L obtained from SSF under anaerobic condition. </LI> </UL> </P>