Adsorption of Flavones from Chamaecyparis obtusa by Ionic Liquid-Immobilized Polymers

Abstract

The adsorption isotherms of three flavones (quercitrin, myricetin and amentoflavone) on five different ionic liquid polymers were compared. The interaction between the polymer and target compounds were examined. The experimental parameters in the equilibrium isotherms were estimated by linear and nonlinear regression analysis. The adsorption equilibrium data of the three flavones were examined using three different models and the best model for these experimental data was the competitive Langmuir-Freundlich. The regression coefficients of adsorption isotherms were myricetin (0.908 in methylimidazole polymer), quercitn and amentoflavone (0.937 and 0.919 in carboxy-imidazole polymer, respectively).