Kinetic and Thermodynamic Studies on the Adsorption of Zn super( 2+) onto Chitosan-aluminium Oxide Composite Material

Kinetic and Thermodynamic Studies on the Adsorption of Zn super( 2+) onto Chitosan-aluminium Oxide Composite Material

This study presents kinetic and thermodynamic studies on the adsorption of Zn super( 2+) onto chitosan-aluminium oxide composite material. The adsorption of Zn super( 2+) onto chitosan-aluminium oxide composite material was found to follow pseudo-second-order kinetic model and the apparent adsorptio...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:International journal of chemistry 2011-02, Vol.3 (1), p.18-18
Hauptverfasser: Ma, Zhiguang, Di, Na, Zhang, Fang, Gu, Peipei, Liu, Suwen, Liu, Pan
Format: Artikel
Sprache:eng
Schlagworte:
Adsorption
Composite materials
Enthalpy
Entropy
Gibbs free energy
Oxides
Thermodynamics
Zinc
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:This study presents kinetic and thermodynamic studies on the adsorption of Zn super( 2+) onto chitosan-aluminium oxide composite material. The adsorption of Zn super( 2+) onto chitosan-aluminium oxide composite material was found to follow pseudo-second-order kinetic model and the apparent adsorption activation energy (Ea) was measured to be 37.20kJ/mol. Adsorption was mainly chemical adsorption. Thermodynamic data supported Langmuir adsorption model and the enthalpy of adsorption ( Delta H super( [thetas])) and the entropy of adsorption ( Delta S super( [thetas])) were found to be 17.81kJ/mol and 109.77J/(mol.K), respectively. The adsorption Gibbs free energy ( Delta G super( [thetas])) decreased with the increase of temperature.
ISSN:1916-9698
1916-9701