Imperial College London

Dr Florence Gschwend

Faculty of EngineeringDepartment of Chemical Engineering

Honorary Research Fellow
 
 
 
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Contact

 

f.gschwend12 Website

 
 
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Location

 

329Bone BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Gschwend:2018:10.1039/c8gc00837j,
author = {Gschwend, FJV and Brandt-Talbot, A and Malaret, FJ and Shinde, S and Hallett, JP},
doi = {10.1039/c8gc00837j},
journal = {Green Chemistry},
pages = {3486--3498},
title = {Rapid pretreatment of Miscanthus using the low-cost ionic liquid triethylammonium hydrogen sulfate at elevated temperatures},
url = {http://dx.doi.org/10.1039/c8gc00837j},
volume = {20},
year = {2018}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Deconstruction with low-cost ionic liquids (ionoSolv) is a promising method to pre-condition lignocellulosic biomass for the production of renewable fuels, materials and chemicals. This study investigated process intensification strategies for the ionoSolv pretreatment of Miscanthus X giganteus using the low-cost ionic liquid triethylammonium hydrogen sulfate ([TEA][HSO4]) in the presence of 20 wt% water, using high temperatures and a high solid to solvent loading of 1:5 g/g. The temperatures investigated were 150, 160, 170 and 180°C. We discuss the effect of pretreatment temperature on lignin and hemicellulose removal, cellulose degradation and enzymatic saccharification yields. We report that very good fractionation can be achieved across all investigated temperatures, including an enzymatic saccharification yield exceeding 75% of the theoretical maximum after only 15 min of treatment at 180°C. We further characterised the recovered lignins which established some tunability of the hydroxyl group content, subunit composition, connectivity and molecular weight distribution in the isolated lignin while maintaining maximum saccharification yield. This drastic reduction of pretreatment time at increased biomass loading without a yield penalty is promising for the development of a commercial ionoSolv pretreatment process.
AU - Gschwend,FJV
AU - Brandt-Talbot,A
AU - Malaret,FJ
AU - Shinde,S
AU - Hallett,JP
DO - 10.1039/c8gc00837j
EP - 3498
PY - 2018///
SN - 1463-9262
SP - 3486
TI - Rapid pretreatment of Miscanthus using the low-cost ionic liquid triethylammonium hydrogen sulfate at elevated temperatures
T2 - Green Chemistry
UR - http://dx.doi.org/10.1039/c8gc00837j
UR - http://hdl.handle.net/10044/1/59917
VL - 20
ER -