Distribution of uranium on zeolite X and investigation of thermodynamic parameters for this system

Sema Akyil*, Mahmoud A.A. Aslani, Şule Aytaş

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

The sorption of U(VI) from aqueous solutions on zeolite X has been studied by a batch technique. Distribution coefficients (Kd) were determined for sorption systems as a function of sorbate concentration, pH, contact time and temperature. The sorption isotherm was formed according to the Langmuir isotherm. Thermodynamic parameters have been determined at different temperatures. The ΔH° values for U(VI) on zeolite X were -29.5147 kJ mol-1 at 313 K at pH 3 and -19.8705 kJ mol-1 at 303 K at pH 9. The sorption of U(VI) on zeolite X is an exothermic in nature. Negative values of ΔG° show the spontaneous values for U(VI) that become less negative at higher temperatures, which shows that sorption is less favoured at higher temperatures.

Original languageEnglish
Pages (from-to)769-773
Number of pages5
JournalJournal of Alloys and Compounds
Volume271-273
DOIs
Publication statusPublished - 12 Jun 1998
Externally publishedYes

Keywords

  • Adsorption isotherms
  • Uranium adsorption
  • Zeolite
  • Zeolite X

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