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Title: Separation of lignin from corn stover hydrolysate with quantitative recovery of ionic liquid

Abstract

Abundant lignocellulosic biomass could become a source of sugars and lignin, potential feedstocks for the now emergent biorenewable economy. The production and conversion of sugars from biomass have been well-studied, but far less is known about the production of lignin that is amenable to valorization. In this paper, we report the isolation of lignin generated from the hydrolysis of biomass dissolved in the ionic liquid 1-butyl-3-methylimidazolium chloride. We show that lignin can be isolated from the hydrolysate slurry by simple filtration or centrifugation, and that the ionic liquid can be recovered quantitatively by a straightforward wash with water. Finally, the isolated lignin is not only free from ionic liquid but also lacks cellulosic residues and is substantially depolymerized, making it a promising feedstock for valorization by conversion into fuels and chemicals.

Authors:
 [1];  [2];  [2];  [2];  [1]
  1. Univ. of Wisconsin, Madison, WI (United States); Wisconsin Energy Institute, Madison, WI (United States)
  2. Hyrax Energy, Inc., Menlo Park, CA (United States)
Publication Date:
Research Org.:
Univ. of Wisconsin, Madison, WI (United States); Hyrax Energy, Inc., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
OSTI Identifier:
1346923
Grant/Contract Number:  
FC02-07ER64494; SC0010126
Resource Type:
Accepted Manuscript
Journal Name:
ACS Sustainable Chemistry & Engineering
Additional Journal Information:
Journal Volume: 3; Journal Issue: 4; Journal ID: ISSN 2168-0485
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 09 BIOMASS FUELS; 1-butyl-3-methylimidazolium chloride; Bagasse; biorefinery; centrifugation; corn stover; filtration; techno-economics; valorization

Citation Formats

Underkofler, Kaylee A., Teixeira, Rodrigo E., Pietsch, Stephen A., Knapp, Kurtis G., and Raines, Ronald T. Separation of lignin from corn stover hydrolysate with quantitative recovery of ionic liquid. United States: N. p., 2015. Web. doi:10.1021/sc500731c.
Underkofler, Kaylee A., Teixeira, Rodrigo E., Pietsch, Stephen A., Knapp, Kurtis G., & Raines, Ronald T. Separation of lignin from corn stover hydrolysate with quantitative recovery of ionic liquid. United States. https://doi.org/10.1021/sc500731c
Underkofler, Kaylee A., Teixeira, Rodrigo E., Pietsch, Stephen A., Knapp, Kurtis G., and Raines, Ronald T. Fri . "Separation of lignin from corn stover hydrolysate with quantitative recovery of ionic liquid". United States. https://doi.org/10.1021/sc500731c. https://www.osti.gov/servlets/purl/1346923.
@article{osti_1346923,
title = {Separation of lignin from corn stover hydrolysate with quantitative recovery of ionic liquid},
author = {Underkofler, Kaylee A. and Teixeira, Rodrigo E. and Pietsch, Stephen A. and Knapp, Kurtis G. and Raines, Ronald T.},
abstractNote = {Abundant lignocellulosic biomass could become a source of sugars and lignin, potential feedstocks for the now emergent biorenewable economy. The production and conversion of sugars from biomass have been well-studied, but far less is known about the production of lignin that is amenable to valorization. In this paper, we report the isolation of lignin generated from the hydrolysis of biomass dissolved in the ionic liquid 1-butyl-3-methylimidazolium chloride. We show that lignin can be isolated from the hydrolysate slurry by simple filtration or centrifugation, and that the ionic liquid can be recovered quantitatively by a straightforward wash with water. Finally, the isolated lignin is not only free from ionic liquid but also lacks cellulosic residues and is substantially depolymerized, making it a promising feedstock for valorization by conversion into fuels and chemicals.},
doi = {10.1021/sc500731c},
journal = {ACS Sustainable Chemistry & Engineering},
number = 4,
volume = 3,
place = {United States},
year = {Fri Feb 20 00:00:00 EST 2015},
month = {Fri Feb 20 00:00:00 EST 2015}
}

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Cited by: 23 works
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