Separation of Ag+, Zn2+ and Cu2+ ions by electrodialysis with monovalent cation specific membrane and EDTA
Identifieur interne : 001243 ( Main/Exploration ); précédent : 001242; suivant : 001244Separation of Ag+, Zn2+ and Cu2+ ions by electrodialysis with monovalent cation specific membrane and EDTA
Auteurs : A. T. Cherif [Algérie] ; A. Elmidaoui [France] ; C. Gavach [France]Source :
- Journal of Membrane Science [ 0376-7388 ] ; 1993.
Abstract
In this work, electrodialysis is applied to the separation of the cations from a mixture of the electrolytes AgNo3, Zn(NO3)2 in aqueous solution when the metal ion concentrations are low (0.01 M. The commercial cation exchange membrane Neosepta C.M.S., produced by Tokuyama Soda, which is selective for monovalent ions, was used. In order to prevent scale formation on the membrane, nitric acid or ammonia is added to the feed solution. In both cases the current efficiencies of Ag+ recovery are low because of the competitive transport of protons or ammonium ions through the membrane. The separation of silver from copper and zinc has been performed using EDTA as a complexing agent. Because the charges of the complexes formed have different signs, silver is obtained with an acceptable yield in the cathodic side, whereas the copper and zinc are obtained in the anodic side with low current efficiency.
Url:
DOI: 10.1016/0376-7388(93)87003-T
Affiliations:
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T." last="Cherif">A. T. Cherif</name><affiliation wicri:level="1"><country xml:lang="fr">Algérie</country><wicri:regionArea>Institut de Chimie, USTHB, Dar-El Beida</wicri:regionArea><wicri:noRegion>Dar-El Beida</wicri:noRegion></affiliation></author><author><name sortKey="Elmidaoui, A" sort="Elmidaoui, A" uniqKey="Elmidaoui A" first="A." last="Elmidaoui">A. Elmidaoui</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>Laboratory of Physical Chemistry of Polyphasic Systems, CNRS, B.P. 5051</wicri:regionArea><wicri:noRegion>B.P. 5051</wicri:noRegion><wicri:noRegion>B.P. 5051</wicri:noRegion></affiliation></author><author><name sortKey="Gavach, C" sort="Gavach, C" uniqKey="Gavach C" first="C." last="Gavach">C. Gavach</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Correspondence to: C. Gavach, Centre National de la Recherche Scientifique, Laboratoire de Physico-chimie des Systèmes Polyphasés, LPCSP-URA 330, 1919, Route de Mende - B.P. 5051, 34033 Montpellier Cedex 01</wicri:regionArea><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Languedoc-Roussillon</region><settlement type="city">Montpellier</settlement></placeName></affiliation><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>Laboratory of Physical Chemistry of Polyphasic Systems, CNRS, B.P. 5051</wicri:regionArea><wicri:noRegion>B.P. 5051</wicri:noRegion><wicri:noRegion>B.P. 5051</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Membrane Science</title><title level="j" type="abbrev">MEMSCI</title><idno type="ISSN">0376-7388</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1993">1993</date><biblScope unit="volume">76</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="39">39</biblScope><biblScope unit="page" to="49">49</biblScope></imprint><idno type="ISSN">0376-7388</idno></series><idno type="istex">171EC1C42FBA11E96E85A7F2FE69390B915FE448</idno><idno type="DOI">10.1016/0376-7388(93)87003-T</idno><idno type="PII">0376-7388(93)87003-T</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0376-7388</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In this work, electrodialysis is applied to the separation of the cations from a mixture of the electrolytes AgNo3, Zn(NO3)2 in aqueous solution when the metal ion concentrations are low (0.01 M. The commercial cation exchange membrane Neosepta C.M.S., produced by Tokuyama Soda, which is selective for monovalent ions, was used. In order to prevent scale formation on the membrane, nitric acid or ammonia is added to the feed solution. In both cases the current efficiencies of Ag+ recovery are low because of the competitive transport of protons or ammonium ions through the membrane. The separation of silver from copper and zinc has been performed using EDTA as a complexing agent. Because the charges of the complexes formed have different signs, silver is obtained with an acceptable yield in the cathodic side, whereas the copper and zinc are obtained in the anodic side with low current efficiency.</div></front></TEI><affiliations><list><country><li>Algérie</li><li>France</li></country><region><li>Languedoc-Roussillon</li><li>Occitanie (région administrative)</li></region><settlement><li>Montpellier</li></settlement></list><tree><country name="Algérie"><noRegion><name sortKey="Cherif, A T" sort="Cherif, A T" uniqKey="Cherif A" first="A. T." last="Cherif">A. T. Cherif</name></noRegion></country><country name="France"><noRegion><name sortKey="Elmidaoui, A" sort="Elmidaoui, A" uniqKey="Elmidaoui A" first="A." last="Elmidaoui">A. Elmidaoui</name></noRegion><name sortKey="Gavach, C" sort="Gavach, C" uniqKey="Gavach C" first="C." last="Gavach">C. Gavach</name><name sortKey="Gavach, C" sort="Gavach, C" uniqKey="Gavach C" first="C." last="Gavach">C. 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