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Investigation of transport phenomena in a hybrid ion exchange-electrodialysis system for the removal of copper ions

Identifieur interne : 001702 ( Main/Exploration ); précédent : 001701; suivant : 001703

Investigation of transport phenomena in a hybrid ion exchange-electrodialysis system for the removal of copper ions

Auteurs : A. Mahmoud [France] ; L. Muhr [France] ; S. Vasiluk [Ukraine] ; A. Aleynikoff [Ukraine] ; François Lapicque [France]

Source :

Journal of applied electrochemistry [ 0021-891X ] ; 2003.

RBID : Pascal:04-0245155

Descripteurs français

Pascal (Inist)
- Echange ion, Electrodialyse, Enlèvement, Cuivre ion, Solution diluée, Coefficient diffusion, Phénomène transport, Transfert ion, Epuration eau usée, Méthode électrochimique.

English descriptors

KwdEn :
- Copper ion, Diffusion coefficient, Dilute solution, Electrochemical method, Electrodialysis, Ion exchange, Ion transfer, Removal, Transport process, Waste water purification.

Abstract

Hybrid ion exchange electrodialysis processes allow the removal of metal ions from dilute waste liquids and the recovery of more concentrated solutions. The work reported here was aimed at investigating the two steps in the treatment process, namely, adsorption of metal ions onto the packed bed of resin and electromigration (i.e., the transport of these ions in the complex system under the applied electrical field). The case of copper sulfate was investigated. Dowex resins with a cross-linking degree of 2 and 8% were used. The flux of copper through the resin bed and the current efficiency for ion transfer to the cathode compartment were determined as a function of potential gradient and copper ionic fraction in the bed. Apparent diffusion coefficients of Cu²⁺ in the overall system were deduced from the experimental data.

Affiliations:

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Le document en format XML

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<front><div type="abstract" xml:lang="en">Hybrid ion exchange electrodialysis processes allow the removal of metal ions from dilute waste liquids and the recovery of more concentrated solutions. The work reported here was aimed at investigating the two steps in the treatment process, namely, adsorption of metal ions onto the packed bed of resin and electromigration (i.e., the transport of these ions in the complex system under the applied electrical field). The case of copper sulfate was investigated. Dowex resins with a cross-linking degree of 2 and 8% were used. The flux of copper through the resin bed and the current efficiency for ion transfer to the cathode compartment were determined as a function of potential gradient and copper ionic fraction in the bed. Apparent diffusion coefficients of Cu<sup>2+</sup>
 in the overall system were deduced from the experimental data.</div>
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Investigation of transport phenomena in a hybrid ion exchange-electrodialysis system for the removal of copper ions

Investigation of transport phenomena in a hybrid ion exchange-electrodialysis system for the removal of copper ions

Source :

Descripteurs français

English descriptors

Abstract

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