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Electrochemical recovery of copper complexed by DTPA and C12-DTPA from aqueous solution using a membrane cell
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. (Surface and Colloid Engineering)ORCID iD: 0000-0001-6270-2970
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.ORCID iD: 0000-0001-8868-4766
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. (Surface and Colloid Engineering)ORCID iD: 0000-0003-3407-7973
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering. (Surface and Colloid Engineering)
2018 (English)In: Journal of chemical technology and biotechnology (1986), ISSN 0268-2575, E-ISSN 1097-4660Article in journal (Refereed) Epub ahead of print
Abstract [en]

BACKGROUND

The electrochemical recovery of copper from DTPA and C12-DTPA (a surface-active derivative of DTPA) complex solutions was investigated in a membrane flow cell. Electrolysis time, solution flow rate, applied current density, and solution pH were evaluated.

RESULTS

The chelating surfactant C12-DTPA can promote the kinetics of copper electrodeposition more than DTPA depending on the experimental conditions. At a current density of 30 A m–2, a solution flow rate of 0.6 L min–1, and pH 10 after 180 min treatment, the copper recovery and current efficiency were 50% and 43.3%, respectively, in the Cu(II)-DTPA system and about 65% and 53.6%, respectively, in the Cu(II)-C12-DTPA system. The differences in the amount of recovery could be explained in terms of differences in the diffusion of copper complexes with DTPA and C12-DTPA to the cathode, as well as their solution behavior and pH-dependent conditional stability constants (log10 K’CuDTPA3-).

CONCLUSION

Electrochemical methods could be effectively combined with foam flotation for the chelating surfactant C12-DTPA, to recover copper and C12-DTPA. This makes the overall treatment more sustainable, and can be helpful in complying with the increasingly stringent environmental regulations

Place, publisher, year, edition, pages
2018.
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:miun:diva-32251DOI: 10.1002/jctb.5510OAI: oai:DiVA.org:miun-32251DiVA: diva2:1162671
Note

Version of record online: 9 January 2018

Available from: 2017-12-05 Created: 2017-12-05 Last updated: 2018-01-30Bibliographically approved

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Publisher's full texthttp://onlinelibrary.wiley.com/doi/10.1002/jctb.5510/abstract

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Eivazihollagh, AlirezaBäckström, JoakimNorgren, MagnusEdlund, Håkan

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Eivazihollagh, AlirezaBäckström, JoakimNorgren, MagnusEdlund, Håkan
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Journal of chemical technology and biotechnology (1986)
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