Cited by 34Biofuel production and bioconversionCatalysis for Biomass ConversionAnaerobic Digestion and Biogas Production

Enhancing the enzymatic digestibility of sugarcane bagasse through the application of an ionic liquid in combination with an acid catalyst

Diedericks, Danie, Rensburg, Eugéne van, del Prado García‐Aparicio, María, Görgens, Johann F.·2012·Biotechnology Progress

Abstract

Various ionic liquids have been identified as effective pretreatment solvents that can enhance the cellulose digestibility of lignocellulose by removing lignin, one of the main factors contributing to the recalcitrant nature of lignocellulose. 1‐Butyl‐3‐methylimidazolium methylsulfate ([BMiM]MeSO 4) is a potential delignification reagent, hence its application as a pretreatment solvent for sugarcane bagasse (SB) was investigated. The study also evaluated the benefit of an acid catalyst (i.e., H 2 SO 4) and the effect of pretreatment conditions, which varied within a time and temperature range of 0–240 min and 50–150°C, respectively. The use of an acid catalyst contributed to a more digestible solid and a higher degree of delignification. However, the [BMiM]MeSO 4‐H 2 SO 4 combination failed to produce a fully digestible solid, as a maximum cellulose digestibility of 77% (w/w) was obtained at the optimum pretreatment condition of 125°C for 120 min. Furthermore, up to half of the lignin content could be extracted during pretreatment, while simultaneously extensive, sometimes complete, removal of xylan, the presence of which, also hampers cellulose digestibility. Hence, [BMiM]MeSO 4 has been identified an effective pretreatment solvent for SB as the application thereof both significantly improved digestibility, and simultaneously removed two of the main factors contributing to the recalcitrant nature of lignocellulose. As xylan and lignin have potential value as precursor chemicals, the existing process may in future be extended toward substrate fractionation, a biorefinery concept where value is added to all feedstock constituents. © 2011 American Institute of Chemical Engineers Biotechnol. Prog., 2012

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Crossref · 10.1002/btpr.711

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  • In hydrolysis of cellulose in [C4C1im]Cl/NMP with water and sulfuric acid, the hydrolysis temperature was only 70 °C and the co-solvent accelerated dissolution substantially, although hydrolysis was slower.

    “The hydrolysis temperature was only 70 °C and the presence of the co-solvent accelerated the dissolution substantially, although hydrolysis was slower.”

    From Deconstruction of lignocellulosic biomass with ionic liquids (2013) · cites this paper as [150]

  • The product solution in the [C4C1im]Cl/NMP hydrolysis study was not analysed for degradation products or lignin.

    “The product solution was not analysed for degradation products or lignin.”

    From Deconstruction of lignocellulosic biomass with ionic liquids (2013) · cites this paper as [150]

  • Best conditions using 1:3 NMP to ionic liquid resulted in 69% total reducing sugar yield and 39% glucose yield.

    “The best conditions (using a 1 : 3 ration of NMP to ionic liquid) resulted in a 69% total reducing sugar yield and 39% glucose yield.”

    From Deconstruction of lignocellulosic biomass with ionic liquids (2013) · cites this paper as [150]

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Authors
Diedericks, D., Rensburg, E. V., del Prado García‐Aparicio, M., & Görgens, J. F.
Affiliations
Stellenbosch University (ZA)
Corresponding author
Görgens, Johann F.
Venue
Biotechnology Progress
Publisher
Wiley
Published
2011-09-26
Volume
28
Issue
1
Pages
76-84
ISSN
  • 1520-6033 (ISSN-L)
  • 8756-7938
OpenAlex
W2140334236
Cited by
34
References
48
Citations by year
2022: 1 · 2021: 2 · 2019: 2 · 2017: 5 · 2016: 4 · 2015: 4 · 2014: 1 · 2013: 7 · 2012: 8
FWCI
3.03
Type
journal article
Language
en
Open access
closed
Locations
  • Biotechnology Progress (publishedVersion)
  • PubMed (publishedVersion)
  • SUNScholar (Stellenbosch University) (submittedVersion)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
  • Physical Sciences › Engineering › Biomedical Engineering › Catalysis for Biomass Conversion
  • Physical Sciences › Engineering › Building and Construction › Anaerobic Digestion and Biogas Production
Keywords
sugarcane bagasse, ionic liquid pretreatment, acid catalysis, sulfuric acid, lignocellulose recalcitrance, lignin removal, xylan removal, cellulose digestibility, biorefinery, lignin valorization
MeSH terms
Acids, Catalysis, Cellulose, Chemical Fractionation, Imidazoles, Lignin, Xylans, Saccharum, Ionic Liquids

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