We have investigated the adsorption isotherms, thermodynamics and adsorption kinetics of salt onto zeolites. The adsorption isotherm was studied using Langmuir, Freundlich, Temkin and Dubinin Radushkevich models. The separation factor, RL=0.588, indicates the nature of adsorption process is favorable. The adsorption is physical as indicated by high adsorption intensity (n N 1) and small mean free energy (E b 20 kJ/mol). The negative ??G?? (???13.33 to ???13.44 kJ/mol) indicates the spontaneous nature of adsorption. The negative ??H?? (???16.71 kJ/mol) confirms the exothermic nature of adsorption process,whereas the negative ??S?? (???0.0116 kJ/-mol K) suggests the configuration of the adsorbate on the zeolite surface is less random. Pseudo-second-order kinetic model well fits to the experiment data. Based on the characteristics of the adsorption isotherms, thermodynamic and adsorption kinetics, zeolite is potential for seawater desalination process.