期刊
JOURNAL OF SUPERCRITICAL FLUIDS
卷 164, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.supflu.2020.104916
关键词
Lignocellulosic residue; Supercritical fluid; Hydrolysis; Fermentation; Biofuel
资金
- Higher Level Personnel Improvement Coordination (CAPES) Brazil [001, 88887.370357/2019-00]
- Sao Paulo - FAPESP [2018/05999-0, 2018/14938-4, 2018/14582-5, 2018/23835-4, 2019/08542-3]
- CNPq [302473/2019-0]
- Pilot Plant for Process Development of CTBE -Brazilian Bioethanol Science and Technology Laboratory, CNPEM/MCTIC
- U.S. National Science Foundation [1605916, 1554283]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1605916] Funding Source: National Science Foundation
Subcritical water hydrolysis (SWH) is a promising pre-treatment process for the production of second-generation ethanol (2 G ethanol), furthermore subcritical water is a fast, non-toxic, and green process. To address this issue SWH was performed at follow conditions: 200 degrees C, 15 MPa, 20 e 5 mL min(-1); the hydrolysate was obtained in order to produce a fermentable liquor in three different steps, 1) pure SWH, 2) SWH concentrated and rotary evaporator, and 3) SWH combinated with enzymatic hydrolysis. S. cerevisiae SA-1 and the pentose metabolizing yeast, S. stipitis NRRLY-7124, were used to evaluate fermentation potential. The combination of the products of SWH and the integration of enzymatic hydrolysis provided the greatest fermentable sugar yield with 3.0 +/- 0.53 g L-1 xylose and 6.3 +/- 0.5 g L-1 glucose; subsequent fermentation with S. cerevisiae SA-1 and S. stipitis NRRLY-7124 resulted in a 2 G ethanol yield of 2.20 +/- 0.01 g L-1. (C) 2020 Elsevier B.V. All rights reserved.
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