Production of oligosaccharides and biofuels from Miscanthus using combinatorial steam explosion and ionic liquid pretreatment
Authors
Organisations
Type | Article |
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Original language | English |
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Article number | 124625 |
Number of pages | 9 |
Journal | Bioresource Technology |
Volume | 323 |
Early online date | 28 Dec 2020 |
DOI | |
Publication status | Published - 01 Mar 2021 |
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Permanent link | Permanent link |
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Abstract
Pretreatment strategies are fundamental to effectively deconstruct lignocellulosic biomass and economically produce biofuels, biomaterials and bio-based chemicals. This study evaluated individual and combinatorial steam explosion (SE) and ionic liquid (IL) pretreatments for production of high-value oligosaccharides from a novel seed-based Miscanthus hybrid (Mx2779). The two ILs used for pretreatment were triethylammonium hydrogen sulphate [TEA][HSO4] and 1-ethyl-3-methylimidazolium acetate [C2mim][OAc]. The results showed that each pretreatment leads to distinct effects on the fragmentation (cellulose and xylan dissolution, delignification, deacetylation) and physicochemical modification (cellulose and lignin properties) of lignocellulose. This, in turn, dictated enzymatic hydrolysis efficiencies of the cellulose pulp to glucose or gluco-oligosaccharides for downstream applications. Our findings suggest that the stand-alone SE or [C2mim][OAc] pretreatments may offer cost advantages over [TEA][HSO4] through the production of oligosaccharides such as xylo- and gluco-oligosaccharides. This study also highlights technical and economic pretreatment process challenges related to the production of oligosaccharides from Miscanthus Mx2779 biomass.
Keywords
- Biorefinery, Ionic liquid, Miscanthus, Oligosaccharides, Steam explosion, Hydrolysis, Ionic Liquids, Lignin, Steam, Biomass, Biofuels
Documents
- Article
Final published version, 616 KB, PDF
Licence: CC BY Show licence
- Supporting information
Final published version, 239 KB, PDF
Licence: CC BY Show licence