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Equilibrium, kinetic and thermodynamic study of the biosorption of uranium onto Cystoseria indica algae.
J Hazard Mater. 2008 Feb 11; 150(3):612-8.JH

Abstract

Biosorption equilibrium, kinetics and thermodynamics of binding of uranium ions to Cystoseria indica were studied in a batch system with respect to temperature and initial metal ion concentration. Algae biomass exhibited the highest uranium uptake capacity at 15 degrees C at an initial uranium ion concentration of 500 mg l(-1) and an initial pH of 4. Biosorption capacity increased from 198 to 233 mg g(-1) with an decrease in temperature from 45 to 15 degrees C at this initial uranium concentration. The Langmuir isotherm model were applied to experimental equilibrium data of uranium biosorption depending on temperature. Equilibrium data fitted very well to the Langmuir model C. indica algae in the studied concentration range of Uranium ions at all the temperatures studied. The saturation type kinetic model was applied to experimental data at different temperatures changing from 15 to 45 degrees C to describe the batch biosorption kinetics assuming that the external mass transfer limitations in the system can be neglected and biosorption is chemical sorption controlled. The activation energy of biosorption (E(A)) was determined as -6.15 using the Arrhenius equation. Using the thermodynamic equilibrium coefficients obtained at different temperatures, the thermodynamic constants of biosorption (DeltaG degrees , DeltaH degrees and DeltaS degrees) were also evaluated.

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Authors+Show Affiliations

Khani MH
Department of Chemical Engineering, Faculty of Engineering, University of Tarbiat Modares, P.O. Box 14115-111, Tehran, Iran. mhkhani@modares.ac.ir
Keshtkar AR
No affiliation info available
Ghannadi M
No affiliation info available
Pahlavanzadeh H
No affiliation info available

MeSH

AdsorptionKineticsModels, ChemicalPhaeophytaThermodynamicsUraniumWaste Disposal, FluidWater Pollutants, RadioactiveWater Purification

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17582680

Citation

Khani, M H., et al. "Equilibrium, Kinetic and Thermodynamic Study of the Biosorption of Uranium Onto Cystoseria Indica Algae." Journal of Hazardous Materials, vol. 150, no. 3, 2008, pp. 612-8.
Khani MH, Keshtkar AR, Ghannadi M, et al. Equilibrium, kinetic and thermodynamic study of the biosorption of uranium onto Cystoseria indica algae. J Hazard Mater. 2008;150(3):612-8.
Khani, M. H., Keshtkar, A. R., Ghannadi, M., & Pahlavanzadeh, H. (2008). Equilibrium, kinetic and thermodynamic study of the biosorption of uranium onto Cystoseria indica algae. Journal of Hazardous Materials, 150(3), 612-8.
Khani MH, et al. Equilibrium, Kinetic and Thermodynamic Study of the Biosorption of Uranium Onto Cystoseria Indica Algae. J Hazard Mater. 2008 Feb 11;150(3):612-8. PubMed PMID: 17582680.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Equilibrium, kinetic and thermodynamic study of the biosorption of uranium onto Cystoseria indica algae. AU - Khani,M H, AU - Keshtkar,A R, AU - Ghannadi,M, AU - Pahlavanzadeh,H, Y1 - 2007/05/10/ PY - 2007/02/04/received PY - 2007/05/01/revised PY - 2007/05/04/accepted PY - 2007/6/22/pubmed PY - 2008/5/7/medline PY - 2007/6/22/entrez SP - 612 EP - 8 JF - Journal of hazardous materials JO - J Hazard Mater VL - 150 IS - 3 N2 - Biosorption equilibrium, kinetics and thermodynamics of binding of uranium ions to Cystoseria indica were studied in a batch system with respect to temperature and initial metal ion concentration. Algae biomass exhibited the highest uranium uptake capacity at 15 degrees C at an initial uranium ion concentration of 500 mg l(-1) and an initial pH of 4. Biosorption capacity increased from 198 to 233 mg g(-1) with an decrease in temperature from 45 to 15 degrees C at this initial uranium concentration. The Langmuir isotherm model were applied to experimental equilibrium data of uranium biosorption depending on temperature. Equilibrium data fitted very well to the Langmuir model C. indica algae in the studied concentration range of Uranium ions at all the temperatures studied. The saturation type kinetic model was applied to experimental data at different temperatures changing from 15 to 45 degrees C to describe the batch biosorption kinetics assuming that the external mass transfer limitations in the system can be neglected and biosorption is chemical sorption controlled. The activation energy of biosorption (E(A)) was determined as -6.15 using the Arrhenius equation. Using the thermodynamic equilibrium coefficients obtained at different temperatures, the thermodynamic constants of biosorption (DeltaG degrees , DeltaH degrees and DeltaS degrees) were also evaluated. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/17582680/Equilibrium_kinetic_and_thermodynamic_study_of_the_biosorption_of_uranium_onto_Cystoseria_indica_algae_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(07)00689-9 DB - PRIME DP - Unbound Medicine ER -