Work

Application of Solubility Parameter Theory to Organosolv Extraction of Lignin from Enzymatically Hydrolyzed Cornstalks

Year: 2014

Type: article

Abstract: The Hildebrand solubility parameter (-value) was applied to explain the effect of organic solvent concentration on lignin removal during organosolv extraction of lignin from enzymatically hydrolyzed cornstalks under atmospheric pressure and low temperature (≤ 75 °C) without additional catalyst.The -value of lignin, calculated using the groupcontribution method, was 13.70 (cal/cm 3 ) 1/2 .The proximity of the -value between organic solvent-water and lignin explained the delignification capacity of the organic solvent-water.The concentration of organic solvent in the aqueous mixture that led to the highest delignification (i.e., 34.5%, 41.8%, and 53.7% delignification for ethanol-water, 1,4-dioxanewater, and tetrahydrofuran-water, respectively) was around 65 to 75% vol., which was in keeping with the prediction by the solubility parameter theory.

Source: BioResources

DOI: 10.15376/biores.9.2.3417-3427

Authors: Yueyuan Ye, Yunquan Liu, Jie Chang

Institutions: Xiamen University, South China University of Technology, State Key Laboratory of Pulp and Paper Engineering

Language: English

Topic: Lignin and Wood Chemistry

Subfield: Process Chemistry and Technology

Field: Chemical Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,452

Funder: National Natural Science Foundation of China