Eucalyptus globulus wood fractionation by autohydrolysis and organosolv delignification

被引：137

作者：

Romani, Aloia ^{[1
,2
]}

Garrote, Gil ^{[1
,2
]}

Lopez, Francisco ^{[3
]}

Carlos Parajo, Juan ^{[1
,2
]}

机构：

[1] Univ Vigo, Fac Sci, Dept Chem Engn, As Lagoas 32004, Ourense, Spain

[2] Univ Vigo, CITI, San Cibrao Das Vinas 32004, Ourense, Spain

[3] Univ Huelva, Fac Expt Sci, Dept Chem Engn, Huelva 21071, Spain

来源：

BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 10期

关键词：

Autohydrolysis; Biorefinery; Delignification; Enzymatic hydrolysis; Eucalyptus globulus; LIQUID HOT-WATER; ENZYMATIC-HYDROLYSIS; LIGNOCELLULOSIC MATERIALS; ETHANOL-PRODUCTION; HYBRID POPLAR; PRETREATMENT; BIOMASS; OLIGOSACCHARIDES; TECHNOLOGIES; MANUFACTURE;

D O I：

10.1016/j.biortech.2011.02.070

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This work provides an assessment on the fractionation of Eucalyptus globulus wood by sequential stages of autohydrolysis (to cause the solubilization of hemicelluloses) and organosolv pulping (to dissolve lignin, leaving solids enriched in cellulose). With this approach, valuable products (hemicellulose-derived saccharides, sulphur-free lignin fragments and cellulosic substrates with low contents of residual hemicelluloses) are obtained in separate streams, according to the biomass refinery approach. Autohydrolysis was carried out under optimized operational conditions, and organosolv pulping was performed using uncatalyzed ethanol-water solutions. The effects of the most influential operational variables (autohydrolysis severity, delignification temperature and ethanol concentration in the organosolv stage) on solid yield, solid composition, cellulose susceptibility and recovery of the various fractions was assessed using statistical methods, which enabled the identification of the most favourable operational conditions. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：5896 / 5904

页数：9

共 29 条

[1] Enhanced enzymatic hydrolysis of olive tree wood by steam explosion and alkaline peroxide delignification [J].