Wang, Zhaoqin; Dien, Bruce S.; Rausch, Kent D.; Tumbleson, M.E.; Singh, Vijay
초록
<P><B>Abstract</B></P> <P>In this study, liquid hot water pretreatment was combined with disk milling for pretreatment of sugarcane bagasse. Sugarcane bagasse was pretreated using liquid hot water (LHW) at 140–180 °C for 10 min (20% w/w solids content) and then disk milled. Disk milling improved glucose release 41–177% and ethanol production from glucose/xylose cofermentation by 80% compared to only using LHW pretreatment. The highest ethanol conversion efficiency achieved was 94%, which was observed when bagasse was treated at 180 °C with LHW and disk milled. However, a small amount of residual xylose (3 g/L) was indicative that further improvement could be achieved to increase ethanol production.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Hot water pretreated sample were directly milled without No washing/detoxification step. </LI> <LI> Inhibitors became significant issue on cofermentation when hot water pretreatment temperature increased to 200 °C. </LI> <LI> Disk milling was effective on sugar and bioethanol yields increase. </LI> <LI> Synergistic effect of two stage pretreatment decreased as pretreatment severity increased. </LI> </UL> </P>