[en] Miscanthus x giganteus is a perennial grass which grows rapidly and gives high yields of biomass
per hectare. It can be grown in poor quality soil and is non invasive. Due to its high cellulose and
hemicellulose content, it has attracted considerable attention as a possible energy crop to produce
bioethanol. Pretreatment of lignocellulosic biomass is a key step to unlocking the protective
structures so that the enzymatic hydrolysis of the carbohydrate fraction to monosugars can be
achieved more easily and with greater yield. In this study, Miscanthus x giganteus was delignified
by a chemical pre-treatment process using a mixture of formic acid/acetic acid (1). The treated
material was then hydrolyzed. By means of Box-Behnken experimental design and response surface
methodology we investigated the effect of cooking time (60, 120 and 180 min), formic acid/acetic
acid/water concentration (20/60/20, 30/50/20 and 40/40/20) and temperature (80, 90 and 107°C) on
the residual Klason lignin content and the % of digestibility. The optimal pretreatment process
parameters were identified.
Disciplines :
Materials science & engineering
Author, co-author :
Vanderghem, Caroline ; Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
Brostaux, Yves ; Université de Liège - ULiège > Sciences agronomiques > Statistique, Inform. et Mathém. appliquée à la bioingénierie
Jacquet, Nicolas ; Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
Blecker, Christophe ; Université de Liège - ULiège > Chimie et bio-industries > Technologie des industries agro-alimentaires
Paquot, Michel ; Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
Language :
English
Title :
Pretreatment And Enzymatic Hydrolysis Of Miscanthus x giganteus: Influence Of Process Parameters
Publication date :
21 September 2010
Event name :
The Fourth Annual Workshop of COST FP0602- Biotechnical Processing of Lignocellulosic Raw Materials