Low temperature pretreatment of sugarcane bagasse at atmospheric pressure using mixtures of ethylene carbonate and ethylene glycol


Autoria(s): Zhang, Zhanying; O'Hara, Ian M.; Rackemann, Darryn W.; Doherty, William O.S.
Data(s)

13/11/2012

Resumo

A low temperature lignocellulose pretreatment process was developed using acid-catalysed mixtures of alkylene carbonate and alkylene glycol. Pretreatment of sugarcane bagasse with mixtures of ethylene carbonate (EC) and ethylene glycol (EG) was more effective than that with mixtures of propylene carbonate (PC) and propylene glycol (PG). These mixtures were more effective than the individual components in making bagasse cellulose more amenable to cellulase digestion. Glucan digestibilities of ≥87% could be achieved with a wide range of EC to EG ratios from 9:1 to 1:1 (w/w). Pretreatment of bagasse by the EC/EG mixture with a ratio of 4:1 in the presence of 1.2% H2SO4 at 90 °C for 30 min led to the highest glucan enzymatic digestibility of 93%. The high glucan digestibilities obtained under these acidic conditions were due to (a) the ability of alkylene carbonate to cause significant biomass size reduction, (b) the ability of alkylene glycol to cause biomass defibrillation, (c) the ability of alkylene carbonate and alkylene glycol to remove xylan and lignin, and (d) the magnified above attributes in the mixtures of alkylene carbonate and alkylene glycol.

Formato

application/pdf

Identificador

http://eprints.qut.edu.au/63065/

Publicador

R S C Publications

Relação

http://eprints.qut.edu.au/63065/1/accepted.pdf

DOI:10.1039/C2GC36323B

Zhang, Zhanying, O'Hara, Ian M., Rackemann, Darryn W., & Doherty, William O.S. (2012) Low temperature pretreatment of sugarcane bagasse at atmospheric pressure using mixtures of ethylene carbonate and ethylene glycol. Green Chemistry, 15, pp. 255-264.

Direitos

Copyright 2013 The Royal Society of Chemistry

Fonte

Centre for Tropical Crops and Biocommodities; Science & Engineering Faculty

Palavras-Chave #030504 Organic Green Chemistry #090402 Catalytic Process Engineering #pretreatment #sugarcane bagasse #ethylene carbonate #enzymatic hydrolysis #low temperature
Tipo

Journal Article