Imperial College London
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Prof Jason P. Hallett

Faculty of Engineering, Department of Chemical Engineering

Professor of Sustainable Chemical Technology
 
 
 
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Contact

 

+44 (0)20 7594 5388j.hallett Website

 
 
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Location

 

228bBone BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Weigand:2017:10.1039/c7fd00059f,
author = {Weigand, L and Mostame, S and Brandt-Talbot, A and Welton, T and Hallett, JP},
doi = {10.1039/c7fd00059f},
journal = {Faraday Discussions},
pages = {331--349},
title = {Effect of pretreatment severity on the cellulose and lignin isolated from Salix using ionoSolv pretreatment},
url = {http://dx.doi.org/10.1039/c7fd00059f},
volume = {202},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The ionoSolv pretreatment is a new technique employing protic low-cost ionic liquids and has previously been applied to successfully fractionate switchgrass and the grass Miscanthus giganteus. This study investigates the effect of using the protic ionic liquid solution [N2220][HSO4]80% with two different acid/base ratios (1.02 and 0.98) at 120, 150 and 170 °C on the pretreatment outcome of the hardwood willow. The ionic liquid solution was able to fractionate willow, and a pulp and lignin fraction were recovered after treatment. The pretreatment success was determined via enzymatic hydrolysis of the pulp, which showed that the ionoSolv pretreatment was able to increase enzymatic glucose yields compared to untreated willow biomass. The pretreatment produced a cellulose-rich pulp with high hemicellulose and lignin removal. The pulp composition and glucose yield after saccharification were greatly influenced by the acidity of the ionic liquid solution, temperature and pretreatment time. The extracted lignin was analysed via 2-D HSQC NMR spectroscopy and GPC to investigate the changes in the lignin structure induced by the pretreatment severity. The lignin structure (in terms of inter-unit linkages and S/G ratio) and molecular weight varied significantly depending on the pretreatment conditions used.
AU  - Weigand,L
AU  - Mostame,S
AU  - Brandt-Talbot,A
AU  - Welton,T
AU  - Hallett,JP
DO  - 10.1039/c7fd00059f
EP  - 349
PY  - 2017///
SN  - 1359-6640
SP  - 331
TI  - Effect of pretreatment severity on the cellulose and lignin isolated from Salix using ionoSolv pretreatment
T2  - Faraday Discussions
UR  - http://dx.doi.org/10.1039/c7fd00059f
VL  - 202
ER  -
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