Kinetic and Thermodynamic Aspects of Ytterbium Adsorption on Sand

摘要

The kinetic and thermodynamic parameters for the adsorption of ytterbium on sand samples from dilute acidic solution are presented. The sorption equilibrium constant, Kc, has been calculated at different temperatures between 18 and 37°C. The sorption data fitted the Freundlich and Dubinin-Radushkevich (D-R) models well. Thermodynamic calculations showed that the sorption of ytterbium on sand was endothermic in nature.