A column sorption study was carried out by using four resins (D113,D001,LS-1000,LS-5000) for the adsorption of alkaline-earth metal ions from aqueous solutions.The breakthrough curve was obtained as a function of feed flow rate,and the total and breakthrough capacity values of the resins were calculated.Four kinetic models: Adams-Bohart,Wolborska,Thomas and Yoon-Nelson models were applied to experimental data to predict the breakthrough curves of Na-form resins and to determine the characteristic parameters of the column useful for process design.All models were found suitable for describing the whole or a definite part of the dynamic behavior of the column with respect to flow rate and inlet ion concentration.Otherwise,the breakthrough curves for Mg2+,Ca2+,Sr2+ on the four Na-form resins in the mixed solution of alkaline-earth metals were also obtained.The results obtained would be helpful for the understanding of the competitive adsorption processes and the recovery or removal of one or more alkaline-earth metal ions from aqueous solutions.