文献类型：期刊文献

英文题名：Efficient saccharification by pretreatment of bagasse pith with ionic liquid and acid solutions simultaneously

作者：Wang, Gang[1];Zhang, Suping[1];Xu, Wenjuan[1];Qi, Wei[2];Yan, Yongjie[1];Xu, Qingli[1]

机构：[1]E China Univ Sci & Technol, Res Ctr Biomass Energy, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China

年份：2015

卷号：89

起止页码：120

外文期刊名：ENERGY CONVERSION AND MANAGEMENT

收录：;EI(收录号：20144400136965);WOS:【SCI-EXPANDED(收录号:WOS:000346552200012)】；

基金：The study was supported by Chinese National High-tech R&D Program (863 Program) (2012AA101806), National Key Technology Support Program (2012BAD32B0705, 2014BAD02B03), the program for New Century Excellent Talents (NCET-11-0642) in University and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Bagasse pith; Ionic liquid; Pretreatment; Cellulase hydrolysis; Reducing sugars

摘要：Hydrolysis of hemicellulose and disruption of cellulose during pretreatment process are conducive to the following cellulase hydrolysis performance. In this work, bagasse pith was first pretreated by 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) solution containing 0-1.2% hydrochloric acid (HCl) and 30% water. The water (30%) added into the acidic ionic liquid (IL) solutions led to an increase in the biomass loading up to a biomass/IL solutions ratio of 1:10 (wt.%). Hemicellulose was hydrolyzed to reducing sugars by HCl and cellulose was dissolved by [BMIM]Cl. In this process, 76.9% of hemicellulose conversion and 95% of cellulose recovery were obtained. The pretreated bagasse pith was then followed by hydrolysis with commercially available enzymes. The effects of pretreatment temperature, reaction time and acid concentration on cellulase hydrolysis of pretreated bagasse pith were investigated. Pretreatment of bagasse pith with [BMIM]Cl solutions containing 1.0% HCl at 120 degrees C for 30 min resulted in the glucose concentration of 92.3 g/l and yield of 94.5% after 72 h of cellulase hydrolysis. The maximum total reducing sugars yield reached to 89.9% after pretreatment and cellulase hydrolysis. (C) 2014 Elsevier Ltd. All rights reserved.