Arsenate removal by Donnan dialysis: Effects of the accompanying components

Exchange characteristics of monocarboxylic acids and monosulfonic acids onto anion-exchange resins

The accurate modelling of equilibrium and kinetics of ion exchange is fundamental for economic and safe design of industrial units, particularly to carry out the delicate scale-up studies and simulations.

Ion Exchange Equilibria and Kinetics

Kinetics, equilibrium and thermodynamic studies of L-tryptophan adsorption using a cation exchange resin

Equilibrium studies of phenylalanine and tyrosine on ion-exchange resins

In this paper we investigate the equilibrium uptake of neutral, basic, and acidic amino acids by strongly basic anion-exchange resins in the hydroxyl form. Because homogeneous and heterogeneous equilibria take place, both solution and ion-exchange equilibria were studied. A model that takes account of the variation of the separation factor with the ionic fraction in solution was used to correlate the experimental data.

Ion-Exchange Equilibria of Amino Acids on Strong Anionic Resins

This work is a study of the behavior of amino acids on columns of strong anion-exchange resins in displacement chromatography. A new technology allowing the minimization of pollutant reagents was applied. It consists of using dissolved carbon dioxide in water as a displacer. The emphasis was also placed on the use of unbuffered solutions of amino acids in water. A mathematical model for the displacement process was constructed. Ion-exchange equilibrium relations based on variable selectivity coefficients and dissociation reactions of amino acids were incorporated in the model. It is shown that, in the case of negligible hydrodynamic and kinetic resistances, pure and concentrated products could be obtained.

Displacement Chromatography of Amino Acids by Carbon Dioxide Dissolved in Water

In this paper we investigate displacement chromatography of amino acids on columns of strong anionic resins in the hydroxyl form. The displacer used here is carbon dioxide dissolved in water, but t...

Amel Zammouri

Papers

Ion-Exchange Equilibria of Amino Acids on Strong Anionic Resins

Displacement Chromatography of Amino Acids by Carbon Dioxide Dissolved in Water

Amino acids separations by displacement chromatography. Effects of homogeneous and heterogeneous equilibria on separation performances