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Valorization of Miscanthus × giganteus by γ-Valerolactone/H 2 O/FeCl 3 system toward efficient conversion of cellulose and hemicelluloses.
- Source :
-
Carbohydrate polymers [Carbohydr Polym] 2021 Oct 15; Vol. 270, pp. 118388. Date of Electronic Publication: 2021 Jul 01. - Publication Year :
- 2021
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Abstract
- γ-Valerolactone (GVL), a biomass-derived green chemical, offers an environmentally responsible solvent for conversion of lignocellulose to high value-added chemicals. Herein, we report a two-step process for directly producing cellulosic residual, furfural and lignin from Miscanthus × giganteus (M. × giganteus) bypassing the isolation of xylose, which exhibits promising advantage in energy reduction. The optimized pretreatment (100 mM FeCl <subscript>3</subscript> at 160 °C for 60 min) induced significant xylan removal (98.4%), resulting in rugged fibre surface, thus leading to the peak cellulose conversion of 99.3%. Furfural yield in the second step reached to 76.6% after 100 mM FeCl <subscript>3</subscript> catalyzed GVL/H <subscript>2</subscript> O treatment at 180 °C for 10 min without addition of any chemical. The extracted lignin showed representative structure (such as β-O-4', β-β' linkages) and medium molecular weight (4275.5 g/mol). 79.6% of furfural can be recovered by distillation. This study proposes a systematic and energy efficient approach for maximizing biomass utilization.<br /> (Copyright © 2021 Elsevier Ltd. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1879-1344
- Volume :
- 270
- Database :
- MEDLINE
- Journal :
- Carbohydrate polymers
- Publication Type :
- Academic Journal
- Accession number :
- 34364629
- Full Text :
- https://doi.org/10.1016/j.carbpol.2021.118388