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Modeling batch kinetics and thermodynamics of zinc and cadmium ions removal from waste solutions using synthetic zeolite A.
J Hazard Mater. 2005 Dec 09; 127(1-3):211-20.JH

Abstract

The sorptive removal of zinc and cadmium ions from aqueous solutions using synthetic zeolite A was investigated. Experiments were carried out as a function of solute concentration and temperature (298-333 K). Several kinetic models were used to test the experimental rate data and to examine the controlling mechanism of the sorption process. Various parameters such as effective diffusion coefficient, activation energy and entropy of activation were evaluated. Equilibrium sorption data were analyzed using Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherm models. Of the model tested, both Freundlich and D-R isotherm expressions were found to give better fit to the experimental equilibrium data compared to Langmuir model. The mean free energy is in all cases in the range corresponding to the ion exchange type of sorption. The results indicated that synthetic zeolite A can be used as an efficient ion exchange material for the removal of zinc and cadmium ions from industrial and radioactive wastewaters.

Authors+Show Affiliations

El-Kamash AM
Hot Laboratory Center, Atomic Energy Authority of Egypt, Inshas, Cairo. kamash20@yahoo.com
Zaki AA
No affiliation info available
El Geleel MA
No affiliation info available

MeSH

AdsorptionCadmiumThermodynamicsWaste Disposal, FluidWater Pollutants, ChemicalWater PurificationZeolitesZinc

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16125311

Citation

El-Kamash, A M., et al. "Modeling Batch Kinetics and Thermodynamics of Zinc and Cadmium Ions Removal From Waste Solutions Using Synthetic Zeolite A." Journal of Hazardous Materials, vol. 127, no. 1-3, 2005, pp. 211-20.
El-Kamash AM, Zaki AA, El Geleel MA. Modeling batch kinetics and thermodynamics of zinc and cadmium ions removal from waste solutions using synthetic zeolite A. J Hazard Mater. 2005;127(1-3):211-20.
El-Kamash, A. M., Zaki, A. A., & El Geleel, M. A. (2005). Modeling batch kinetics and thermodynamics of zinc and cadmium ions removal from waste solutions using synthetic zeolite A. Journal of Hazardous Materials, 127(1-3), 211-20.
El-Kamash AM, Zaki AA, El Geleel MA. Modeling Batch Kinetics and Thermodynamics of Zinc and Cadmium Ions Removal From Waste Solutions Using Synthetic Zeolite A. J Hazard Mater. 2005 Dec 9;127(1-3):211-20. PubMed PMID: 16125311.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Modeling batch kinetics and thermodynamics of zinc and cadmium ions removal from waste solutions using synthetic zeolite A. AU - El-Kamash,A M, AU - Zaki,A A, AU - El Geleel,M Abed, Y1 - 2005/08/24/ PY - 2005/03/23/received PY - 2005/07/06/revised PY - 2005/07/17/accepted PY - 2005/8/30/pubmed PY - 2006/3/4/medline PY - 2005/8/30/entrez SP - 211 EP - 20 JF - Journal of hazardous materials JO - J Hazard Mater VL - 127 IS - 1-3 N2 - The sorptive removal of zinc and cadmium ions from aqueous solutions using synthetic zeolite A was investigated. Experiments were carried out as a function of solute concentration and temperature (298-333 K). Several kinetic models were used to test the experimental rate data and to examine the controlling mechanism of the sorption process. Various parameters such as effective diffusion coefficient, activation energy and entropy of activation were evaluated. Equilibrium sorption data were analyzed using Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherm models. Of the model tested, both Freundlich and D-R isotherm expressions were found to give better fit to the experimental equilibrium data compared to Langmuir model. The mean free energy is in all cases in the range corresponding to the ion exchange type of sorption. The results indicated that synthetic zeolite A can be used as an efficient ion exchange material for the removal of zinc and cadmium ions from industrial and radioactive wastewaters. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/16125311/Modeling_batch_kinetics_and_thermodynamics_of_zinc_and_cadmium_ions_removal_from_waste_solutions_using_synthetic_zeolite_A_ DB - PRIME DP - Unbound Medicine ER -