期刊
CARBOHYDRATE POLYMERS
卷 90, 期 2, 页码 805-813出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2012.05.101
关键词
Cellulose; Room temperature ionic liquid; Cellulase; IL-recycling
资金
- Conseil Regional de Picardie
The development of second-generation bioethanol involves minimizing the energy input throughout the processing steps. We report here that efficient ionic liquid pretreatments of cellulose can be achieved with short duration times (20 min) at mild temperature (45 degrees C) with [Emim](+)[MeO(H)PO2](-) and at room temperature (25 degrees C) with [Emim](+)[CH3COO](-). In these conditions, yields of glucose were increased by a factor of 3. In addition, the recycling of these two imidazolium-based ILs can be performed in maintaining their efficiency to pretreat cellulose. The short time and mild temperature of cellulose solubilization allowed a one-batch processing of [Emim](+)[MeO(H)PO2](-) IL-pretreatment and saccharification. In the range from 0 to 100% IL in an aqueous enzymatic medium, the glucose yields were improved at IL proportions between 10 and 40%. The maximum yield at 10% IL is very promising to consider one batch process as efficient as two-step process. (C) 2012 Elsevier Ltd. All rights reserved.
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