Title :
Adsorption of Sorbic Acid from Aqueous Solution by Macroporous Adsorption Resin: Equilibrium and Kinetic Characteristics
Author :
Wang, Jiangang ; Duan, Jinli
Author_Institution :
Sch. of Environ. & Biol. Eng., Jilin Inst. of Chem. Technol., Jilin, China
Abstract :
The purpose of this work was to investigate the potential of the macroporous resin, H-103, in adsorbing sorbic acid. Study on adsorption thermodynamics and kinetics of sorbic acid by H-103 resin was carried out through static experiments. These adsorption processes of sorbic acid were indicative of exothermic process and physical adsorption. The adsorption of sorbic acid on H-103 resin fit well to Freundlich model .Temperature variations were used to evaluate enthalpy DeltaH, entropy DeltaS and Gibbs free energy DeltaG values. The negative valueof DeltaG showed the spontaneous nature of adsorption. In the temperature range from 303-333 K, DeltaH and DeltaS were negative, and the reaction was exothermic and reversible. Adsorption kinetics was found to follow first order reversible model expression.
Keywords :
adsorption; biochemistry; biothermics; enthalpy; entropy; free energy; resins; Freundlich model; Gibbs free energy; H-103; adsorption thermodynamics; enthalpy; entropy; exothermic process; kinetics; macroporous adsorption resin; reversible reaction; sorbic acid adsorption; Chemical analysis; Chemical technology; Entropy; Food preservation; Kinetic theory; Resins; Temperature; Thermodynamics; Wastewater treatment; Water pollution;
Conference_Titel :
Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2901-1
Electronic_ISBN :
978-1-4244-2902-8
DOI :
10.1109/ICBBE.2009.5162286
