Acid-catalyzed autohydrolysis of wheat straw to improve sugar recovery

被引：21

作者：

Ertas, Murat ^{[1
]}

Han, Qiang ^{[2
]}

Jameel, Hasan ^{[2
]}

机构：

[1] Bursa Tech Univ, Dept Forest Ind Engn, TR-16200 Bursa, Turkey

[2] N Carolina State Univ, Dept Forest Biomat, Raleigh, NC 27695 USA

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 169卷

关键词：

Wheat straw; Enzymatic hydrolysis; Acid-catalyzed pretreatment; Sugar; Chemical composition; ENZYMATIC-HYDROLYSIS; PRETREATMENT; ETHANOL; OLIGOSACCHARIDES; FERMENTATION; TECHNOLOGY; BIOETHANOL;

D O I：

10.1016/j.biortech.2014.06.081

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A comparison study of autohydrolysis and acid-catalyzed autohydrolysis of wheat straw was performed to understand the impact of acid addition on overall sugar recovery. Autohydrolysis combined with refining is capable of achieving sugar recoveries in the mid 70s. If the addition of a small amount of acid is capable of increasing the sugar recovery even higher it may be economically attractive. Acetic, sulfuric, hydrochloric and sulfurous acids were selected for acid-catalyzed autohydrolysis pretreatments. Autohydrolysis with no acid at 190 degrees C showed the highest total sugar in the prehydrolyzate. Enzymatic hydrolysis was performed for all the post-treated solids with and without refining at enzyme loadings of 4 and 10 FPU/g for 96 h. Acid-catalyzed autohydrolysis at 190 degrees C with sulfurous acid showed the highest total sugar recovery of 81.2% at 4 FPU/g enzyme charge compared with 64.3% at 190 degrees C autohydrolysis without acid. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：1 / 8

页数：8

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