Bioethanol production from cotton stalk: A comparative study of various pretreatments

文献类型： 外文期刊

第一作者： Meixia Wang;;Dayun Zhou

作者： Meixia Wang;Dayun Zhou;Yanqin Wang;Shoujun Wei;Weihua Yang;Meng Kuang;Lei Ma;Dan Fang;Shuangjiao Xu;Shuang-kui Du

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关键词： Cotton stalk;Dilute sulfuric acid pretreatment;Ultrasound-assisted alkali pretreatment;High pressure-assisted alkali pretreatment;Bioethanol

期刊名称：FUEL （ 影响因子：6.609； 五年影响因子：6.63 ）

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收录情况： SCI

摘要： Cotton stalk (CS) is a potential biomass for bioethanol production, but the direct conversion without pretreatment always results in an extremely low yield because of the recalcitrant nature of lignocellulose. In this study, the effects of various methods, i.e. dilute sulfuric acid pretreatment (DSAP), ultrasound-assisted alkali pretreatment (UAAP), and high pressure-assisted alkali pretreatment (HPAP), on chemical composition, physical structure, and subsequent enzymatic hydrolysis and ethanol fermentation for bioethanol production from CS have been explored. It was found that the intact structures of pretreated CS were obviously disrupted. The hemicellulose and lignin of biomass were removed and the crystallinity of cellulose increased after pretreatments. HPAP led to the highest reducing sugar and ethanol yields (271.70 mg g(-1) and 45.53%, respectively) compared with UAAP and DSAP. HPAP proved to be a potential and effective pretreatment method for ethanol production from CS. (C) 2016 Elsevier Ltd. All rights reserved.

分类号： TQ51`TK1

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