Adsorption and thermodynamic behaviour of U(VI) on the Tendurek volcanic tuff

Sabriye Yusan; Mahmoud A.A. Aslani; D. Alkim Turkozu; Hasan A. Aycan; Sule Aytas; Sema Akyil

doi:10.1007/s10967-009-0312-3

Adsorption and thermodynamic behaviour of U(VI) on the Tendurek volcanic tuff

Sabriye Yusan^*, Mahmoud A.A. Aslani, D. Alkim Turkozu, Hasan A. Aycan, Sule Aytas, Sema Akyil

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

In this work, sorption of uranium ions on volcanic tuff collected from the deposits located at the Tendurek of Eastern Turkey was investigated in batch technique. The effect of different parameters such as pH of the medium, contact time, uranium concentration and temperature were investigated. The maximum removal of U(VI) was found to be 68% at pH 5.0, initial U(VI) concentration of 75 mg L^-1 and 30 °C. Thermodynamic parameters, such as enthalpy of adsorption ΔH°, free energy change ΔG° and entropy change ΔS° have been also calculated and interpreted. The suitability of the Langmuir, Freundlich and Dubinin-Radushkhevic adsorption models to the equilibrium data was investigated for uranium-volcanic tuff system. The results suggest that volcanic tuff can be used as efficient and cost effective adsorbents for uranium ion removal.

Original language	English
Pages (from-to)	231-238
Number of pages	8
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	283
Issue number	1
DOIs	https://doi.org/10.1007/s10967-009-0312-3
Publication status	Published - Jan 2010
Externally published	Yes

Keywords

Adsorption
Adsorption isotherms
Thermodynamic parameters
Uranium
Volcanic tuff

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10.1007/s10967-009-0312-3

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title = "Adsorption and thermodynamic behaviour of U(VI) on the Tendurek volcanic tuff",

abstract = "In this work, sorption of uranium ions on volcanic tuff collected from the deposits located at the Tendurek of Eastern Turkey was investigated in batch technique. The effect of different parameters such as pH of the medium, contact time, uranium concentration and temperature were investigated. The maximum removal of U(VI) was found to be 68% at pH 5.0, initial U(VI) concentration of 75 mg L-1 and 30 °C. Thermodynamic parameters, such as enthalpy of adsorption ΔH°, free energy change ΔG° and entropy change ΔS° have been also calculated and interpreted. The suitability of the Langmuir, Freundlich and Dubinin-Radushkhevic adsorption models to the equilibrium data was investigated for uranium-volcanic tuff system. The results suggest that volcanic tuff can be used as efficient and cost effective adsorbents for uranium ion removal.",

keywords = "Adsorption, Adsorption isotherms, Thermodynamic parameters, Uranium, Volcanic tuff",

author = "Sabriye Yusan and Aslani, {Mahmoud A.A.} and Turkozu, {D. Alkim} and Aycan, {Hasan A.} and Sule Aytas and Sema Akyil",

year = "2010",

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doi = "10.1007/s10967-009-0312-3",

language = "English",

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T1 - Adsorption and thermodynamic behaviour of U(VI) on the Tendurek volcanic tuff

AU - Yusan, Sabriye

AU - Aslani, Mahmoud A.A.

AU - Turkozu, D. Alkim

AU - Aycan, Hasan A.

AU - Aytas, Sule

AU - Akyil, Sema

PY - 2010/1

Y1 - 2010/1

N2 - In this work, sorption of uranium ions on volcanic tuff collected from the deposits located at the Tendurek of Eastern Turkey was investigated in batch technique. The effect of different parameters such as pH of the medium, contact time, uranium concentration and temperature were investigated. The maximum removal of U(VI) was found to be 68% at pH 5.0, initial U(VI) concentration of 75 mg L-1 and 30 °C. Thermodynamic parameters, such as enthalpy of adsorption ΔH°, free energy change ΔG° and entropy change ΔS° have been also calculated and interpreted. The suitability of the Langmuir, Freundlich and Dubinin-Radushkhevic adsorption models to the equilibrium data was investigated for uranium-volcanic tuff system. The results suggest that volcanic tuff can be used as efficient and cost effective adsorbents for uranium ion removal.

AB - In this work, sorption of uranium ions on volcanic tuff collected from the deposits located at the Tendurek of Eastern Turkey was investigated in batch technique. The effect of different parameters such as pH of the medium, contact time, uranium concentration and temperature were investigated. The maximum removal of U(VI) was found to be 68% at pH 5.0, initial U(VI) concentration of 75 mg L-1 and 30 °C. Thermodynamic parameters, such as enthalpy of adsorption ΔH°, free energy change ΔG° and entropy change ΔS° have been also calculated and interpreted. The suitability of the Langmuir, Freundlich and Dubinin-Radushkhevic adsorption models to the equilibrium data was investigated for uranium-volcanic tuff system. The results suggest that volcanic tuff can be used as efficient and cost effective adsorbents for uranium ion removal.

KW - Adsorption

KW - Adsorption isotherms

KW - Thermodynamic parameters

KW - Uranium

KW - Volcanic tuff

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AN - SCOPUS:77949267693

SN - 0236-5731

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JO - Journal of Radioanalytical and Nuclear Chemistry

JF - Journal of Radioanalytical and Nuclear Chemistry

IS - 1

ER -

Adsorption and thermodynamic behaviour of U(VI) on the Tendurek volcanic tuff

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Keywords

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