Optimal Process of Bagasse Synergistic Hydrolysis with Ultrasonic and WO3/ZrO2 Solid Acid
[Objective] The aim was to study bagasse hydrolyzed with ultrasonic pretreatment and WO3/ZrO2 solid acid to prepare reducing sugar. [Method] The effects of hydrolysis temperature, quality of solid acid, hydrolysis time, and liquid-solid mass ratios on the reducing sugar yield in the hydrolyzate were discussed. A quadratic regression model was founded with response surface methodology, and the process was optimized. [ Result] The result showed that the reducing sugar yield was 75. 65% , the hydrolysis temperature was 97. 52 ℃ , quality of solid acid was 5.76% , hydrolysis time was 3.10 h, and liquid-solid mass ratios was 18:1, The reducing sugar yield increased 21.91% compared with the sample which was not pretreated with ultrasonic microwave at the same condition. [Conclusion] Ultrasonic pretreatment process could promote the hydrolysis of bagasse.
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