Title:
Ionic Liquid Pretreatment of Napier Grass for the Production of Butanol
Author(s):
Saejao, C., Luengnaruemitchai, A., Wongkasemjit, S.
Document(s):
Paper
Poster
Abstract:
Lignocellulosic biomass mainly consists of cellulose, hemicellulose, and lignin in a complicated structure, which has rigid linkage of cellulose with lignin. Therefore, pretreatment is required to break down lignin seal in order to increase enzyme accessibility in enzymatic hydrolysis. Napier grass from Saraburi province, Thailand can be used to produce reducing sugars. This study focuses on the effects of metal salt concentration (FeCl3), pretreatment time, and temperature during acidic-aqueous ionic liquid pretreatment ([EMIM][OAc]/CH3COOH) under microwave irradiation on the reducing sugar yield. The optimum condition of these variables is determined and compared with the pretreatment without the addition of FeCl3. Furthermore, the effect of anti-solvent is also investigated. The results show that the maximum total reducing sugar concentration of 10.07 g/L was obtained under the optimum condition of 160 °C, 100 min, and 60 mM FeCl3. At the different optimum pretreatment conditions, the addition of FeCl3 in [EMIM][OAc]/CH3COOH pretreatment could improve the total sugar yield. At the same pretreatment conditions and anti-solvent volume, the addition of FeCl3 had a negative effect on [EMIM][OAc]/CH3COOH pretreatment. Moreover, acetone-water mixture was the most effective anti-solvent.
Keywords:
ionic liquid, pretreatment, grass, anti-solvent, metal salt
Topic:
Biomass Conversion Technologies for Liquid and Gaseous Fuels, Chemicals and Materials
Subtopic:
Bioethanol and sugars from lignocellulosic biomass
Event:
24th European Biomass Conference and Exhibition
Session:
3BV.3.35
Pages:
1173 - 1177
ISBN:
978-88-89407-165
Paper DOI:
10.5071/24thEUBCE2016-3BV.3.35
Price:
FREE
