%0 Journal Article
%T THE SOLUBILITY OF LIGNIN FROM BAGASSE IN A 1,4-BUTANEDIOL/WATER SYSTEM
%A Qiang Wang
%A Kefu Chen
%A Jun Li
%A Guihua Yang
%J BioResources
%D 2011
%I North Carolina State University
%X The solubility of lignin from bagasse in a 1,4-butanediol/water mixed solution was investigated and explained by the solubility parameter (¦Ä-value). To explore the lignin solubility, enzymatic hydrolysis/mild acidolysis lignin (EMAL) isolated from bagasse was used as the starting material to prepare lignin solution by ultrasonic treatment. The lignin content in solution was determined by UV-vis spectroscopy at a wavelength of 280 nm. The results showed that 240 minutes of ultrasonic treatment was needed to achieve lignin dissolution equilibrium in the 1,4-butanediol/water mixture. Maximum lignin solubility (14.6 g/L) occurred at a concentration of 80% (v/v). The ¦Ä-value of lignin (14.0 (cal/cm3)1/2) was calculated based on the atomic and functional groups present in the phenylpropane unit. The ¦Ä-values of the 1,4-butanediol/water showed a decrease from 22.31 to 11.09 (cal/cm3)1/2 as the concentration of 1,4-butanediol increased. The maximum lignin solubility predicted by the ¦Ä-value should occur at a concentration of 80% (v/v), which agreed with the experimental result.
%K Bagasse
%K Lignin
%K Solubility
%K 1
%K 4-butanediol
%U www.ncsu.edu/bioresources/BioRes_06/BioRes_06_3_3034_Wang_CLYLX_Solubility_Lignin_Bagasse_Butanediol_Water_1835.pdf