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Determination of ion-exchange kinetic parameters for the poly- o-methoxyaniline Zr(IV) molybdate composite cation-exchanger

Determination of ion-exchange kinetic parameters for the poly- o-methoxyaniline Zr(IV) molybdate composite cation-exchanger,10.1016/j.cej.2010.11.036,

Determination of ion-exchange kinetic parameters for the poly- o-methoxyaniline Zr(IV) molybdate composite cation-exchanger   (Citations: 6)
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The kinetics and mechanism for the ion-exchange processes like Mg2+–H+, Ca2+–H+, Sr2+–H+, Ba2+–H+, Ni2+–H+, Cu2+–H+, Mn2+–H+ and Zn2+–H+ at different temperatures using approximated Nernst–Plank equation under the particle diffusion controlled phenomenon were studied for the poly-o-methoxyaniline Zr(IV) molybdate composite cation-exchanger. Some physical parameters, i.e. fractional attainment of equilibrium U(τ), self-diffusion coefficients (D0), energy of activation (Ea) and entropy of activation (ΔS*) have been estimated. These investigations revealed that the equilibrium is attained faster at higher temperature probably due to availability of thermally enlarged matrix of poly-o-methoxyaniline Zr(IV) molybdate composite cation exchange material. These results are useful for predicting the ion-exchange process occurring on the surface of this cation-exchanger.
Journal: Chemical Engineering Journal - CHEM ENG J , vol. 166, no. 2, pp. 639-645, 2011
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