期刊
BIORESOURCE TECHNOLOGY
卷 192, 期 -, 页码 46-53出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.05.043
关键词
Pretreatment; Enzymatic hydrolysis; Biochemical conversion; Mass balance; Biorefineries
资金
- Agriculture and Food Research Initiative Competitive grant, USDA National Institute of Food and Agriculture (NIFA) through the Northwest Advanced Renewables Alliance (NARA) [2011-68005-30416]
The logging and lumbering industry in the Pacific Northwest region generates huge amount of forest residues, offering an inexpensive raw material for biorefineries. Wet explosion (WEx) pretreatment was applied to the recalcitrant biomass to optimize process conditions including temperature (170-190 degrees C), time (10-30 min), and oxygen loading (0.5-7.5% of DM) through an experimental design. Optimal pH for enzymatic hydrolysis of the optimized samples and a complete mass balance have been evaluated. Results indicated that cellulose digestibility improved in all conditions tested with maximum digestibility achieved at 190 degrees C, time 30 min, and oxygen loading of 7.5%. Glucose yield at optimal pH of 5.5 was 63.3% with an excellent recovery of cellulose and lignin of 99.9% and 96.3%, respectively. Hemicellulose sugars recovery for xylose and mannose was found to be 69.2% and 76.0%, respectively, indicating that WEx is capable of producing relative high sugar yield even from the recalcitrant forest residues. (C) 2015 Elsevier Ltd. All rights reserved.
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