Journal
DESALINATION AND WATER TREATMENT
Volume 51, Issue 28-30, Pages 5583-5591Publisher
DESALINATION PUBL
DOI: 10.1080/19443994.2013.769756
Keywords
Adsorption; Uranium (VI) ions; NaY zeolite; Modelling; Kinetic; Thermodynamic
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The adsorption of uranium (VI) from aqueous solutions on synthesised zeolite NaY has been studied and the effect of the solution pH, the initial concentration C, the solid/liquid ratio R and the temperature T was investigated. The adsorption process has been modelled using a 2(3) full factorial design in order to study the influence of the main effects and interaction parameters and to optimise the adsorption process. The pH is the most significant parameter affecting uranium (VI) ions' distribution on zeolite NaY. The equilibrium isotherm has been found to follow the Langmuir model. Kinetic studies showed that the pseudo-second-order model correlates our experimental data. Thermodynamic parameters showed the exothermic heat of adsorption and the spontaneity of the adsorption process.
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