Effect of Drying Method of Corn Stover on Sugar Recovery during Dilute Sulfuric Acid Pretreatment

Abstract

ABSTRACT:The effects of drying method on the sugar conversion of corn stover during dilute sulfuric acid pretreatment were studied. oven-dried corn stover (oDCS) was more sensitive to temperature and time during dilute sulfuric acid pretreatment than air-dried corn stover (aDCS). The yield of the total reducing sugar reached 43.9% when oDCS was pretreated for 50 min at 120°C, which was even higher than the value of the aDCS treated for 90 min. The glucose yield of oDCS was 1.6-to 1.9-fold higher than aDCS. These results indicate that rapidly losing water is a better drying method compared to air drying.