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Title: Ternary ionic liquid–water pretreatment systems of an agave bagasse and municipal solid waste blend

Abstract

Background: Pretreatment is necessary to reduce biomass recalcitrance and enhance the enzymatic saccharification for biofuel production. Ionic liquid (IL) pretreatment has gained a significant interest as a pretreatment process that can reduce biomass crystallinity, remove lignin, and thus obtain higher enzymatic saccharification yields. However, there are several challenges that need to be overcome for the IL pretreatment to become viable for commercialization, including IL cost and recyclability. In addition to maintain process performance by blending high quality (e.g. agave bagasse) and low cost biomass feedstocks such as municipal solid waste (MSW) which is readily available in high quantities. One approach to potentially reduce IL cost is to use a blend of ILs at different concentrations in aqueous mixtures. Herein, we describe 14 IL-water systems with mixtures of 1-ethyl-3-ethylimidazolium acetate ([C2C1Im][OAc]) and 1-butyl-3-ethylimidazolium acetate ([C4C1Im][OAc]) used to pretreat MSW blended with agave bagasse (AGB). The detailed analysis of IL recycling in terms of sugar yields of pretreated biomass and IL stability was examined. Results: Both biomass types (AGB and MSW) were efficiently disrupted by IL pretreatment. The pretreatment efficiency of [C2C1Im][OAc] and [C4C1Im][OAc] decreased when mixed with water above 40%. The AGB/MSW (1:1) blend demonstrated a glucan conversion of 94.1% andmore » 83.0% using IL systems with ~10% and ~40% water content, respectively. Chemical structures of fresh ILs and recycle ILs presented strong similarities observed by FTIR and 1H-NMR spectroscopy. The glucan and xylan hydrolysis yields obtained from recycled IL exhibited a slight decrease in pretreatment efficiency (less than 10% in terms of hydrolysis yields compared to that of fresh IL), and a decrease in cellulose crystallinity trend was observed. Conclusions: Our results demonstrated the mixing ILs such as [C2C1Im][OAc] and [C4C1Im][OAc] and blending MSW with agricultural residues, such as AGB, may help lower the production costs while maintaining high sugar yields. Recycled IL-water mixtures provided comparable results to that of fresh ILs. Both of these results offer the potential of reducing the production costs of sugars and biofuels at biorefineries as compared to more conventional IL conversion technologies.« less

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [4];  [4]
  1. Univ. Autonoma de Nayarit, Tepit (Mexico)
  2. Univ. of Louisville, KY (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  5. Inst. Politecnico Nacional (IPN), Zacatenco (Mexico). Centro de Investigacion y de Estudios Avanzados (CINVESTAV)
  6. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States); 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:
1357758
Alternate Identifier(s):
OSTI ID: 1409430
Report Number(s):
INL/JOU-16-39088
Journal ID: ISSN 1754-6834; PII: 758
Grant/Contract Number:  
AC07-05ID14517; AC02-05CH11231
Resource Type:
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; agave biomass; biomass blend; biomass pretreatment; IL recycling; ionic liquid; municipal solid waste; ternary system; 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES

Citation Formats

Perez-Pimienta, Jose A., Sathitsuksanoh, Noppadon, Thompson, Vicki S., Tran, Kim, Ponce-Noyola, Teresa, Stavila, Vitalie, Singh, Seema, and Simmons, Blake A. Ternary ionic liquid–water pretreatment systems of an agave bagasse and municipal solid waste blend. United States: N. p., 2017. Web. doi:10.1186/s13068-017-0758-4.
Perez-Pimienta, Jose A., Sathitsuksanoh, Noppadon, Thompson, Vicki S., Tran, Kim, Ponce-Noyola, Teresa, Stavila, Vitalie, Singh, Seema, & Simmons, Blake A. Ternary ionic liquid–water pretreatment systems of an agave bagasse and municipal solid waste blend. United States. doi:10.1186/s13068-017-0758-4.
Perez-Pimienta, Jose A., Sathitsuksanoh, Noppadon, Thompson, Vicki S., Tran, Kim, Ponce-Noyola, Teresa, Stavila, Vitalie, Singh, Seema, and Simmons, Blake A. Tue . "Ternary ionic liquid–water pretreatment systems of an agave bagasse and municipal solid waste blend". United States. doi:10.1186/s13068-017-0758-4. https://www.osti.gov/servlets/purl/1357758.
@article{osti_1357758,
title = {Ternary ionic liquid–water pretreatment systems of an agave bagasse and municipal solid waste blend},
author = {Perez-Pimienta, Jose A. and Sathitsuksanoh, Noppadon and Thompson, Vicki S. and Tran, Kim and Ponce-Noyola, Teresa and Stavila, Vitalie and Singh, Seema and Simmons, Blake A.},
abstractNote = {Background: Pretreatment is necessary to reduce biomass recalcitrance and enhance the enzymatic saccharification for biofuel production. Ionic liquid (IL) pretreatment has gained a significant interest as a pretreatment process that can reduce biomass crystallinity, remove lignin, and thus obtain higher enzymatic saccharification yields. However, there are several challenges that need to be overcome for the IL pretreatment to become viable for commercialization, including IL cost and recyclability. In addition to maintain process performance by blending high quality (e.g. agave bagasse) and low cost biomass feedstocks such as municipal solid waste (MSW) which is readily available in high quantities. One approach to potentially reduce IL cost is to use a blend of ILs at different concentrations in aqueous mixtures. Herein, we describe 14 IL-water systems with mixtures of 1-ethyl-3-ethylimidazolium acetate ([C2C1Im][OAc]) and 1-butyl-3-ethylimidazolium acetate ([C4C1Im][OAc]) used to pretreat MSW blended with agave bagasse (AGB). The detailed analysis of IL recycling in terms of sugar yields of pretreated biomass and IL stability was examined. Results: Both biomass types (AGB and MSW) were efficiently disrupted by IL pretreatment. The pretreatment efficiency of [C2C1Im][OAc] and [C4C1Im][OAc] decreased when mixed with water above 40%. The AGB/MSW (1:1) blend demonstrated a glucan conversion of 94.1% and 83.0% using IL systems with ~10% and ~40% water content, respectively. Chemical structures of fresh ILs and recycle ILs presented strong similarities observed by FTIR and 1H-NMR spectroscopy. The glucan and xylan hydrolysis yields obtained from recycled IL exhibited a slight decrease in pretreatment efficiency (less than 10% in terms of hydrolysis yields compared to that of fresh IL), and a decrease in cellulose crystallinity trend was observed. Conclusions: Our results demonstrated the mixing ILs such as [C2C1Im][OAc] and [C4C1Im][OAc] and blending MSW with agricultural residues, such as AGB, may help lower the production costs while maintaining high sugar yields. Recycled IL-water mixtures provided comparable results to that of fresh ILs. Both of these results offer the potential of reducing the production costs of sugars and biofuels at biorefineries as compared to more conventional IL conversion technologies.},
doi = {10.1186/s13068-017-0758-4},
journal = {Biotechnology for Biofuels},
number = 1,
volume = 10,
place = {United States},
year = {2017},
month = {3}
}

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Figures / Tables:

Fig. 1 Fig. 1: Aqueous ionic liquid systems employed in the pretreatment of agave bagasse (AGB), municipal solid waste (MSW), and an AGB/MSW (1:1) blend

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    Works referencing / citing this record:

    Ternary ionic liquid–water pretreatment systems of an agave bagasse and municipal solid waste blend [Supplemental Data]
    dataset, March 2017

    • Perez-Pimienta, Jose; Sathitsuksanoh, Noppadon; Thompson, Vicki
    • figshare-Supplementary information for journal article at DOI: 10.1186/s13068-017-0758-4, 3 DOCX files
    • DOI: 10.6084/m9.figshare.c.3722962

      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.