Theory of ion-exchange columns

Efficient simulation and equilibrium theory for adsorption processes with implicit adsorption isotherms – Mass action equilibria

“…An interesting feature which was also reported by [13,14] is the occurrence of wave patterns with more than N − 1 wave fronts as illustrated in Fig. 11.…”

“…Next focus is on chromatographic cycles, which were also not addressed in the classical literature [13,14,5]. The chromatographic cycle corresponds to a pulse disturbance, consisting of the loading of an empty bed in the front followed by the regeneration of the loaded bed in the rear.…”

“…In this paper, application is demonstrated for stoichiometric ion exchange with mass action equilibria. This is a classical problem, which has been treated first by Tondeur et al [13,14,5]. A characteristic feature are possible selectivity reversals predicted by this model.…”

Efficient simulation and equilibrium theory for adsorption processes with implicit adsorption isotherms – Mass action equilibria

“…An interesting feature which was also reported by [13,14] is the occurrence of wave patterns with more than N − 1 wave fronts as illustrated in Fig. 11.…”

“…Next focus is on chromatographic cycles, which were also not addressed in the classical literature [13,14,5]. The chromatographic cycle corresponds to a pulse disturbance, consisting of the loading of an empty bed in the front followed by the regeneration of the loaded bed in the rear.…”

“…In this paper, application is demonstrated for stoichiometric ion exchange with mass action equilibria. This is a classical problem, which has been treated first by Tondeur et al [13,14,5]. A characteristic feature are possible selectivity reversals predicted by this model.…”

Isothermal column sorption of ethylene—carbon dioxide mixtures with azeotropic behaviour

“…Similar predictions using equilibrium theory can be made for certain ion-exchange systems (13)(14) . We had previously shown, both experimentally"" and by equilibrium analysis"*', that the temperature front in such operations will either emerge separately or propagate in step with the solute wave.…”

“…We had previously shown, both experimentally"" and by equilibrium analysis"*', that the temperature front in such operations will either emerge separately or propagate in step with the solute wave. Similar predictions using equilibrium theory can be made for certain ion-exchange systems (13)(14) . Unfortunately, the lack of equilibrium data for the present system a t solute pressures below 1.07 kPa precludes a full use of this predictive method.…”

Efficient simulation and equilibrium theory for adsorption processes with implicit adsorption isotherms – Mass action equilibria

“…An interesting feature which was also reported by [13,14] is the occurrence of wave patterns with more than N − 1 wave fronts as illustrated in Fig. 11.…”

“…Next focus is on chromatographic cycles, which were also not addressed in the classical literature [13,14,5]. The chromatographic cycle corresponds to a pulse disturbance, consisting of the loading of an empty bed in the front followed by the regeneration of the loaded bed in the rear.…”

“…In this paper, application is demonstrated for stoichiometric ion exchange with mass action equilibria. This is a classical problem, which has been treated first by Tondeur et al [13,14,5]. A characteristic feature are possible selectivity reversals predicted by this model.…”

Isothermal column sorption of ethylene—carbon dioxide mixtures with azeotropic behaviour

“…Similar predictions using equilibrium theory can be made for certain ion-exchange systems (13)(14) . We had previously shown, both experimentally"" and by equilibrium analysis"*', that the temperature front in such operations will either emerge separately or propagate in step with the solute wave.…”

“…We had previously shown, both experimentally"" and by equilibrium analysis"*', that the temperature front in such operations will either emerge separately or propagate in step with the solute wave. Similar predictions using equilibrium theory can be made for certain ion-exchange systems (13)(14) . Unfortunately, the lack of equilibrium data for the present system a t solute pressures below 1.07 kPa precludes a full use of this predictive method.…”

Efficient simulation and equilibrium theory for adsorption processes with implicit adsorption isotherms – Mass action equilibria

“…An interesting feature which was also reported by [13,14] is the occurrence of wave patterns with more than N − 1 wave fronts as illustrated in Fig. 11.…”

“…Next focus is on chromatographic cycles, which were also not addressed in the classical literature [13,14,5]. The chromatographic cycle corresponds to a pulse disturbance, consisting of the loading of an empty bed in the front followed by the regeneration of the loaded bed in the rear.…”

“…In this paper, application is demonstrated for stoichiometric ion exchange with mass action equilibria. This is a classical problem, which has been treated first by Tondeur et al [13,14,5]. A characteristic feature are possible selectivity reversals predicted by this model.…”

Isothermal column sorption of ethylene—carbon dioxide mixtures with azeotropic behaviour

“…Similar predictions using equilibrium theory can be made for certain ion-exchange systems (13)(14) . We had previously shown, both experimentally"" and by equilibrium analysis"*', that the temperature front in such operations will either emerge separately or propagate in step with the solute wave.…”

“…We had previously shown, both experimentally"" and by equilibrium analysis"*', that the temperature front in such operations will either emerge separately or propagate in step with the solute wave. Similar predictions using equilibrium theory can be made for certain ion-exchange systems (13)(14) . Unfortunately, the lack of equilibrium data for the present system a t solute pressures below 1.07 kPa precludes a full use of this predictive method.…”