Lithium adsorption by acid and sodium amberlite.
In this paper we used a previously reported model for examining the adsorption of nonelectrolytes in solution by solid adsorbents to study the adsorption of lithium(I) cations by acid and sodium amberlites, which is an ion-exchange process. Based on the results, both are equilibrium processes and obey a kinetic law with a unity partial order in the Li+ concentration. The kinetic results were used to calculate the specific rate constants and thermodynamic activation functions involved. Also, equilibrium isotherms were used to determine the corresponding ion-exchange capacities, the individual equilibrium constants, and the thermodynamic functions for the overall process.
Navarrete-Guijosa
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Departamento de Química Inorgánica, Facultad de Farmacia, Universidad de Granada, E-18071 Granada, Spain. nguijosa@ugr.es
Navarrete-Casas
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Valenzuela-Calahorro
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López-González
J D
JD
García-Rodríguez
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