期刊
RENEWABLE ENERGY
卷 162, 期 -, 页码 2297-2305出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2020.10.034
关键词
Cellulose; Hemicellulose; saccharification and fermentation; Buffer; Non-ionic surfactants; High lignin content
资金
- National Key R&D Program of China [2019YFD1002404]
- Guangxi Key Laboratory of Chemistry Engineering of Forest Products [GXFG1909]
- Specific research project of Guangxi for research bases and talents [AD18126005]
Autohydrolysis pretreatment is an effective, commercial and environmentally friendly processes for the co-production of bioethanol and xylooligosaccharides (XOS) from sugarcane bagasse (SCB). An XOS yield of 50.53% was obtained at 200 degrees C for 10 min by autohydrolysis pretreatment, most of cellulose and lignin remained in the solid residues, which can be converted into bioethanol. The ethanol yield (66.67%) in sodium acetate buffer solution (SAAB, pH 5.5) system was higher than that in the deionized water (DW) system (51.88%), because the stable pH regulated by the buffer was beneficial to maintain the cellulase and yeast activity. Moreover, the addition of non-ionic surfactants can effectively promote fermentation performances, especially with Tween 80, 82.28% ethanol yield (of the theoretical) was reached. The use of the buffer system and non-ionic surfactants provides an ideal strategy for ethanol production by fermentation of substrates with high lignin content. Therefore, this study shows a suitable and sustainable process for bioethanol and XOS production from SCB using autohydrolysis pretreatment as onestep of a biorefinery. (c) 2020 Elsevier Ltd. All rights reserved.
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