Fractionation of lignocellulosics.: Solubilization of corm stalk hemicelluloses by autohydrolysis in aqueous medium

被引：51

作者：

Rubio, M ^{[1
]}

Tortosa, JF ^{[1
]}

Quesada, J ^{[1
]}

Gómez, D ^{[1
]}

机构：

[1] Univ Murcia, Dept Chem Engn, E-30071 Murcia, Spain

来源：

BIOMASS & BIOENERGY | 1998年 / 15卷 / 06期

关键词：

wood treatment; biomass; hemicelluloses; cellulose; fractionation; autohydrolysis;

D O I：

10.1016/S0961-9534(98)00054-3

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This paper discusses the Variation profiles of the three main polymeric families (hemicelluloses, cellulose and lignin) of milled corn stalk (Zea mays) after aqueous thermomechanochemical treatment. The experimental system used combine explosion and shear effects facilitating the solubilization of hemicelluloses in the aqueous medium. Two starting materials (ethanol-benzene extracted and ethanol-benzene and water extracted) was used. Hemicelluloses are totally solubilized at 220 degrees C (10 min) although there is a loss of lignin (up to a third); cellulose is practically unaffected. A kinetic analysis for the solubilization step was done for calculating the frequency factor and the activation energy for the main treatment using the analytical characterization data from the obtained solid residues. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：483 / 491

页数：9

共 18 条

[1] ETHANOL FROM SOUTHERN HARDWOODS - THE ROLE OF PRESULFONATION IN THE ACID-HYDROLYSIS PROCESS [J].