期刊
BIORESOURCE TECHNOLOGY
卷 189, 期 -, 页码 203-209出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.04.022
关键词
Cholinium; Ionic liquid; Pretreatment; Lignocellulose; Wash times
资金
- Advanced Low Carbon Technology Research and Development Program (ALCA) from Japan Science and Technology Agency [2100040]
- Center of Innovation Science and Technology based Radical Innovation and Entrepreneurship Program (COIstream) from the Japan Science and Technology Agency
- Cross-ministerial Strategic Innovation Promotion Program (SIP) from Japan Science and Technology Agency
- Grants-in-Aid for Scientific Research [15H04193, 15K17867] Funding Source: KAKEN
Choline acetate (ChOAc), a cholinium ionic liquid (IL), was compared with 1-ethyl-3-methylimidazolium acetate (EmimOAc) with regard to biomass pretreatment, inhibition on cellulase and yeast, residuals in pretreated biomass, and saccharification and fermentation of pretreated biomass. Irrespective of ChOAc and EmimOAc, cellulose and hemicellulose saccharification of the IL-pretreated bagasse were over 90% and 60%, respectively. Median effective concentrations (EC50) based on cellulase activity were 32 wt% and 16 wt% for ChOAc and EmimOAc, respectively. The EC50 based on yeast growth were 3.1 wt% and 0.3 wt% for ChOAc and EmimOAc respectively. The residuals in IL-pretreated bagasse were 10% and 23% for ChOAc and EmimOAc, respectively, when washed 2 times after pretreatment. Ethanol yield on a bagasse basis were 60% and 24% for ChOAc and EmimOAc, respectively, in the saccharification and fermentation of IL-pretreated bagasse when washed 2 times. ChOAc-pretreated bagasse could be saccharified and fermented with fewer wash times than EmimOAc-pretreated bagasse. (C)2015 Elsevier Ltd. All rights reserved.
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