Alkaline deep eutectic solvent for separation and extraction of lignin from lignocellulose biomass

Wang, Qingguo; Cao, Kuiyuan; Yan, Fanqi; Duan, Xixin; Shi, Junyou

doi:10.1007/s13399-023-05108-6

Biomass Conv. Bioref.

2024

DOI: 10.1007/s13399-023-05108-6

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Alkaline deep eutectic solvent for separation and extraction of lignin from lignocellulose biomass

Qingguo Wang,

Kuiyuan Cao,

Fanqi Yan

et al.

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Boosting Lignin Dissolution and Biomass Fractionation by Innovative Alkaline Deep Eutectic Solvents

Yu,

Wang,

Yan

et al. 2024

ACS Sustainable Resour. Manage.

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Utilization of deep eutectic solvents (DESs) to extract lignin is a highly attractive strategy for biomass upgrading. Although acidic DESs have been extensively investigated, alkaline DESs (ADESs) have rarely been applied in lignin extraction. Herein, several promising ADESs were prepared for lignin dissolution and biomass pretreatment. Lignin solubility showed a good positive correlation with the Kamlet–Taft parameters and the basicities of the prepared ADESs. Notably, the highest solubility of alkali lignin (AL), enzymatically hydrolyzed lignin (EHL), kraft lignin (KL), and dealkaline lignin (DAL) could reach 49.85, 49.46, 53.14, and 53.17 wt % in ADESs at 60 °C, respectively. Importantly, the prepared ADESs could efficiently remove lignin (80.9–97.8%) from corn stover at 120 °C, significantly improving the enzymatic efficiencies of the residues (71.5–85.4%). Besides, lignin with relatively intact structures or lignin fragments with low molecular weight and good dispersion could be successfully generated. These results confirmed the great potential of ADESs for biomass upgrading.

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Boosting Lignin Dissolution and Biomass Fractionation by Innovative Alkaline Deep Eutectic Solvents

Yu,

Wang,

Yan

et al. 2024

ACS Sustainable Resour. Manage.

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Alkaline deep eutectic solvent for separation and extraction of lignin from lignocellulose biomass

Cited by 1 publication

References 134 publications

Boosting Lignin Dissolution and Biomass Fractionation by Innovative Alkaline Deep Eutectic Solvents

Boosting Lignin Dissolution and Biomass Fractionation by Innovative Alkaline Deep Eutectic Solvents

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