Statistical optimization of sulfite pretreatment of corncob residues for high concentration ethanol production

被引：30

作者：

Cheng, Ke-Ke ^{[1
]}

Wang, Wei ^{[2
]}

Zhang, Jian-An ^{[1
]}

Zhao, Qiang ^{[2
]}

Li, Jin-Ping ^{[2
]}

Xue, Jian-Wei ^{[2
]}

机构：

[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China

[2] Taiyuan Univ Engn & Technol, Dept Chem & Chem Engn, Taiyuan 030024, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 03期

关键词：

Corncob residues; Ethanol; Fermentation; Glucose; Sulfite pretreatment; SIMULTANEOUS SACCHARIFICATION; ENZYMATIC-HYDROLYSIS; FERMENTATION; CHINA;

D O I：

10.1016/j.biortech.2010.09.117

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In this study, a central composite design of response surface method was used to optimize sulfite pretreatment of corncob residues, in respect to sulfite charge (5-10%), treatment time (1-2 h), liquid/solid (l/s) ratio (6:1-10:1) and temperature (150-180 degrees C) for maximizing glucose production in enzymatic hydrolysis process. The relative optimum condition was obtained as follows: sulfite charge 7.1%, l/s ratio 7.6:1, temperature 156 degrees C for 1.4 h. corresponding to 79.3% total glucan converted to glucose + cellobiose. In the subsequent simultaneous saccharification and fermentation (SSF) experiments using 15% glucan substrates pretreated under this kind of conditions, 60.8 g ethanol l(-1) with 72.2% theoretical yield was obtained. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3014 / 3019

页数：6

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