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Issue 20, 2017
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A strategy for generating high-quality cellulose and lignin simultaneously from woody biomass

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Abstract

Efficient fractionation of woody biomass provides an opportunity to separate and then upgrade each of the cellulose, hemicellulose and lignin fractions. The current processes for the fractionation of biomass target high-quality cellulose or lignin solely. Here, we developed a simple and efficient strategy for achieving high-quality cellulose and lignin simultaneously from woody biomass. Solvent thermal treatment was used to release the lignin and hemicellulose fragments from beech sawdust. 92.8% cellulose was retained in cellulose pulp with the purity of cellulose as high as 93.5% and a highly crystalline structure, using tetrahydrofurfuryl alcohol (THFA) and water as the solvent. In addition, 77.4% pure lignin powder was recovered. A linear correlation between the lignin monomer yield and the percentage of total β-O-4 or condensed linkages was observed during the lignin depolymerization process. Our strategy offers a possibility for the high-value utilization of whole biomass.

Graphical abstract: A strategy for generating high-quality cellulose and lignin simultaneously from woody biomass

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Supplementary files

Article information


Submitted
15 Aug 2017
Accepted
01 Sep 2017
First published
01 Sep 2017

Green Chem., 2017,19, 4849-4857
Article type
Paper

A strategy for generating high-quality cellulose and lignin simultaneously from woody biomass

X. Si, F. Lu, J. Chen, R. Lu, Q. Huang, H. Jiang, E. Taarning and J. Xu, Green Chem., 2017, 19, 4849 DOI: 10.1039/C7GC02492D

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