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.
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