Wood biorefinery based on γ-valerolactone/water fractionation

Wood biorefinery based on γ-valerolactone/water fractionation†

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Wood biore fi nery based on γ - valerolactone / water fractionation † Huy

A novel biorefinery concept based on the fractionation of woody biomass in a γ-valerolactone (GVL)/ water binary mixture is introduced. Under optimal GVL/water ratio, Eucalyptus globulus wood was effectively fractionated in a single step into its principal components. The pulp fraction, characterized by high yield, high cellulose purity and high bleachability, was directly spun to produce regen...

Hydrotropic Fractionation of Birch Wood into Cellulose and Lignin: A New Step Towards Green Biorefinery

Hydrotropic treatment is an attractive process that uses water-soluble and environmentally friendly chemicals. Currently, this method is practically unexploited on a large scale due to the long treatment times required. In this study, the hydrotropic process was modified by the addition of hydrogen peroxide, formic acid, or both. The modified treatments were more selective than the reference, a...

Wood Based Lignin Reactions Important to the Biorefinery and Pulp and Paper Industries

The cleavage of lignin bonds in a wood matrix is an important step in the processes employed in both the biorefinery and pulp and paper industries. β-O-4 ether linkages are susceptible to both acidic and alkaline hydrolysis. The cleavage of α-ether linkages rapidly occurs under mildly acidic reaction conditions, resulting in lower molecular weight lignin fragments. Acidic reactions are typicall...

Catalysed alkaline oxidation as a wood fractionation technique