Hamdy Maamoun ABDEL-GHAFAR, El-Sayed ALI ABDEL-AAL and Mohamed Mohamed SHOUKRY; Adsorption Characteristics of Na+ Ions onto Ion Exchange Resin: Kinetics and Isotherms; Advanced Materials and Technologies Environmental Sciences; 2018:2(2): 206-219

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The adsorption of sodium ions onto Amberjet 1500H synthetic ion exchange resin was studied. The study was conducted by a batch method to determine equilibrium and kinetic studies using synthetic solution of 5.3 pH and Na concentration ranged from 10 to 20 mg/L. The experimental isotherm data were analyzed using Temkin and Dubinin-Radushkevich equations. Adsorption kinetics data were tested using pseudo first order, pseudo second order and intraparticle diffusion models. Kinetic studies showed that the adsorption followed a pseudo-second-order reaction. The initial separation rate, pseudo first order, pseudo second order and intraparticle diffusion rate constants for different initial concentrations were evaluated and discussed. Based on the adsorption isotherm studies the uptake capacity and the adsorbate/adsorbate interaction of Na+ ions on 1500H are small, its due to the low affinity of sodium ions for adsorbed with cation resin. For all the system studied, chemical reaction seems significant in the rate-controlling step and the pseudo-second-order chemical reaction kinetics provide the best correlation of the experimental data for 1500H.