Corn stover pretreatment by inorganic salts and its effects on hemicellulose and cellulose degradation

被引：223

作者：

Liu, Li ^{[1
]}

Sun, Junshe ^{[1
]}

Cai, Chengye ^{[1
]}

Wang, Shuhao ^{[1
]}

Pei, Haisheng ^{[1
]}

Zhang, Jingsheng ^{[1
]}

机构：

[1] China Agr Univ, Coll Food Sci & Nutr Engn, Beijing 100083, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 23期

基金：

美国国家科学基金会;

关键词：

Inorganic salts; FeCl3; Hemicellulose; Cellulose; Degradation; DILUTE SULFURIC-ACID; HOT-WATER PRETREATMENT; ENZYMATIC-HYDROLYSIS; ORGANOSOLV PRETREATMENT; BIOMASS PRETREATMENT; LIME PRETREATMENT; LIGNIN; XYLAN; DIGESTIBILITY; FRACTIONATION;

D O I：

10.1016/j.biortech.2009.06.048

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Inorganic salts, NaCl, KCl, CaCl2, MgCl2. FeCl2, FeSO4, FeCl3, and Fe-2(SO4)(3), were studied as catalysts for the degradation of hemicellulose in corn stover. FeCl3 significantly increased the hemicellulose degradation in aqueous solutions heated between 140 and 200 degrees C with high xylose recovery and low cellulose removal, amounting to similar to 90% and <10%, respectively. Hemicellulose removal increased 11-fold when the corn stover was pretreated with 0.1 M FeCl3 Compared to pretreatment with hot water under otherwise the same conditions, which was also 6-fold greater than pretreatment with dilute sulfuric acid at the same pH. Optimum pretreatment conditions were found where the corn stover was pretreated with 0.1 M FeCl3 at 140 degrees C for 20 min. Under Such conditions, 91% of hemicellulose was removed, and the recovery of monomeric and oligomeric xylose in liquid fraction achieved 89%, meanwhile, only 9% of cellulose was removed. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：5865 / 5871

页数：7

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