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Title: Efficient dehydration and recovery of ionic liquid after lignocellulosic processing using pervaporation

Abstract

Background Biomass pretreatment using certain ionic liquids (ILs) is very efficient, generally producing a substrate that is amenable to saccharification with fermentable sugar yields approaching theoretical limits. Although promising, several challenges must be addressed before an IL pretreatment technology can become commercially viable. One of the most significant challenges is the affordable and scalable recovery and recycle of the IL itself. Pervaporation (PV) is a highly selective and scalable membrane separation process for quantitatively recovering volatile solutes or solvents directly from non-volatile solvents that could prove more versatile for IL dehydration. Results We evaluated a commercially available PV system for IL dehydration and recycling as part of an integrated IL pretreatment process using 1-ethyl-3-methylimidazolium acetate ([C 2 C 1 Im][OAc] ) that has been proven to be very effective as a biomass pretreatment solvent. Separation factors as high as 1500 were observed. We demonstrate that > 99.9 wt% [C 2 C 1 Im][OAc] can be recovered from aqueous solution (≤20 wt% IL) and recycled five times. A preliminary technoeconomic analysis validated the promising role of PV in improving overall biorefinery process economics, especially in the case where other IL recovery technologies might lead to significant losses. Conclusions These findings establishmore » the foundation for further development of PV as an effective method of recovering and recycling ILs using a commercially viable process technology.« less

Authors:
 [1];  [2];  [3];  [1];  [3];  [3];  [4];  [1];  [4];  [5];  [4];  [2];  [1]
  1. Joint BioEnergy Inst. (JBEI), Emeryville, CA (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Joint BioEnergy Inst. (JBEI), Emeryville, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Compact Membrane Systems Inc., Newport, DE (United States)
  4. Univ. of Alabama, Tuscaloosa, AL (United States); McGill Univ., Montreal, QC (Canada)
  5. Univ. of Alabama, Tuscaloosa, AL (United States); 525 Solutions, Inc.,Tuscaloosa, AL (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1408409
Grant/Contract Number:
AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Biotechnology for Biofuels
Additional Journal Information:
Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 1754-6834
Publisher:
BioMed Central
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS

Citation Formats

Sun, Jian, Shi, Jian, Murthy Konda, N. V. S. N., Campos, Dan, Liu, Dajiang, Nemser, Stuart, Shamshina, Julia, Dutta, Tanmoy, Berton, Paula, Gurau, Gabriela, Rogers, Robin D., Simmons, Blake A., and Singh, Seema. Efficient dehydration and recovery of ionic liquid after lignocellulosic processing using pervaporation. United States: N. p., 2017. Web. doi:10.1186/s13068-017-0842-9.
Sun, Jian, Shi, Jian, Murthy Konda, N. V. S. N., Campos, Dan, Liu, Dajiang, Nemser, Stuart, Shamshina, Julia, Dutta, Tanmoy, Berton, Paula, Gurau, Gabriela, Rogers, Robin D., Simmons, Blake A., & Singh, Seema. Efficient dehydration and recovery of ionic liquid after lignocellulosic processing using pervaporation. United States. doi:10.1186/s13068-017-0842-9.
Sun, Jian, Shi, Jian, Murthy Konda, N. V. S. N., Campos, Dan, Liu, Dajiang, Nemser, Stuart, Shamshina, Julia, Dutta, Tanmoy, Berton, Paula, Gurau, Gabriela, Rogers, Robin D., Simmons, Blake A., and Singh, Seema. Thu . "Efficient dehydration and recovery of ionic liquid after lignocellulosic processing using pervaporation". United States. doi:10.1186/s13068-017-0842-9. https://www.osti.gov/servlets/purl/1408409.
@article{osti_1408409,
title = {Efficient dehydration and recovery of ionic liquid after lignocellulosic processing using pervaporation},
author = {Sun, Jian and Shi, Jian and Murthy Konda, N. V. S. N. and Campos, Dan and Liu, Dajiang and Nemser, Stuart and Shamshina, Julia and Dutta, Tanmoy and Berton, Paula and Gurau, Gabriela and Rogers, Robin D. and Simmons, Blake A. and Singh, Seema},
abstractNote = {Background Biomass pretreatment using certain ionic liquids (ILs) is very efficient, generally producing a substrate that is amenable to saccharification with fermentable sugar yields approaching theoretical limits. Although promising, several challenges must be addressed before an IL pretreatment technology can become commercially viable. One of the most significant challenges is the affordable and scalable recovery and recycle of the IL itself. Pervaporation (PV) is a highly selective and scalable membrane separation process for quantitatively recovering volatile solutes or solvents directly from non-volatile solvents that could prove more versatile for IL dehydration. Results We evaluated a commercially available PV system for IL dehydration and recycling as part of an integrated IL pretreatment process using 1-ethyl-3-methylimidazolium acetate ([C 2 C 1 Im][OAc] ) that has been proven to be very effective as a biomass pretreatment solvent. Separation factors as high as 1500 were observed. We demonstrate that > 99.9 wt% [C 2 C 1 Im][OAc] can be recovered from aqueous solution (≤20 wt% IL) and recycled five times. A preliminary technoeconomic analysis validated the promising role of PV in improving overall biorefinery process economics, especially in the case where other IL recovery technologies might lead to significant losses. Conclusions These findings establish the foundation for further development of PV as an effective method of recovering and recycling ILs using a commercially viable process technology.},
doi = {10.1186/s13068-017-0842-9},
journal = {Biotechnology for Biofuels},
number = 1,
volume = 10,
place = {United States},
year = {Thu Jun 15 00:00:00 EDT 2017},
month = {Thu Jun 15 00:00:00 EDT 2017}
}

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