Hydrothermal pretreatment conditions to enhance ethanol production from poplar biomass

被引：154

作者：

Negro, MJ ^{[1
]}

Manzanares, P ^{[1
]}

Ballesteros, I ^{[1
]}

Oliva, JM ^{[1
]}

Cabañas, A ^{[1
]}

Ballesteros, M ^{[1
]}

机构：

[1] CIEMAT, DER, Madrid 28045, Spain

来源：

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY | 2003年 / 105卷 / 1-3期

关键词：

poplar; ethanol; pretreatment; steam explosion; liquid hot water;

D O I：

10.1385/ABAB:105:1-3:87

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Pretreatment has been recognized as a key step in enzyme-based conversion processes of lignocellulose biomass to ethanol. The aim of this study is to evaluate two hydrothermal pretreatments (steam explosion and liquid hot water) to enhance ethanol production from poplar (Populus nigra) biomass by a simultaneous saccharification and fermentation(SSF) process. The composition of liquid and solid fractions obtained after pretreatment, enzymatic digestibility, and ethanol production of poplar biomass pretreated at different experimental conditions was analyzed. The best results were obtained in steam explosion pretreatment at 210degreesC and 4 min, taking into account cellulose recovery above 95%, enzymatic hydrolysis yield of about 60%, SSF yield of 60% of theoretical, and 41% xylose recovery in the liquid fraction. Large particles can be used for poplar biomass in both pretreatments, since no significant effect of particle size on enzymatic hydrolysis and SSF was obtained.

引用

页码：87 / 100

页数：14

共 23 条

[1] A comparison between hot liquid water and steam fractionation of corn fiber [J].