期刊
BIORESOURCE TECHNOLOGY
卷 104, 期 -, 页码 349-357出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.10.075
关键词
Rapeseed straw; Bioethanol; Co-fermentation; Same Vessel Saccharification and Fermentation (SVSF)
资金
- Novozymes Group, Denmark
- Danish Agency for Science, Technology and Innovation under Bio REF [2104-06-0004]
- Council of Higher Education of Turkey
Alkaline peroxide pretreatment of rapeseed straw was evaluated for conversion of cellulose and hemicellulose to fermentable sugars. After pretreatment, a liquid phase called pretreatment liquid and a solid phase were separated by filtration. The neutralized pretreatment liquids were used in a co-fermentation process, with Saccharomyces cerevisiae and Pichia stipitis. The solid fraction was used for simultaneous saccharification and co-fermentation process in the same vessel. The effects of various operating variables were investigated. Pretreatment with 5% (v/v) H2O2 at 50 degrees C for 1 h was found to be the optimal pretreatment combination with respect to overall ethanol production. At this condition, 5.73 g ethanol was obtained from pretreatment liquid and 14.07 g ethanol was produced by co-fermentation of solid fraction with P. stipitis. Optimum delignification was observed when 0.5 M MgSO4 was included in the pretreatment mixture, and it resulted in 0.92% increase in ethanol production efficiency. (C) 2011 Elsevier Ltd. All rights reserved.
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