caa a22 4500 475815106 CHVBK 20180406123807.0 cr unu---uuuuu 170329e20000701xx s 000 0 eng 10.1023/A:1003910830855 doi (NATIONALLICENCE)springer-10.1023/A:1003910830855 Some aspects of removal of copper and cobalt from mixed ion dilute solutions [Elektronische Daten] [A.S. Pilla, M.M.E. Duarte, C.E. Mayer] Some aspects of the electrodeposition of copper and cobalt from aqueous sulphate solutions containing low concentrations of their ions were studied with a view to heavy metal removal via an electrochemical process. Both metals were deposited on a vitreous carbon rotating disc electrode. Deposits formed under different conditions were studied employing linear sweep voltammetry, scanning electron microscopy and EDAX surface analysis. Constant potential electrolysis was used to simulate recovery in a laboratory batch reactor. Copper can be deposited without cobalt interference at potentials as cathodic as −1.0 V despite high Co concentrations. At more negative potentials, both metals are deposited simultaneously, although the copper proportion in the binary mixture is greater than that corresponding to the solution concentration ratio. Voltammetry studies effected under conditions in which codeposition occurs show only minor changes in copper behaviour. On the other hand, cobalt behaviour exhibits significant modifications. Even though formation of an intermetallic compound is possible, ASVL and microscopy tests indicate cobalt deposition in different crystalline forms as the more probable cause. In turn, cobalt deposition depends on the polarization conditions of the electrode and on the cobalt and copper concentrations. Kluwer Academic Publishers, 2000 anodic linear sweep voltammetry nationallicence cobalt nationallicence copper nationallicence electrodeposition nationallicence vitreous carbon nationallicence Pilla A.S. Instituto de Ingeniería Electroquímica y Corrosión, Universidad Nacional del Sur, 8000, Bahía Blanca, Argentina aut Duarte M.M.E. Instituto de Ingeniería Electroquímica y Corrosión, Universidad Nacional del Sur, 8000, Bahía Blanca, Argentina aut Mayer C.E. Instituto de Ingeniería Electroquímica y Corrosión, Universidad Nacional del Sur, 8000, Bahía Blanca, Argentina aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/7(2000-07-01), 831-838 0021-891X 30:7<831 2000 30 10800 https://doi.org/10.1023/A:1003910830855 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003910830855 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pilla A.S. Instituto de Ingeniería Electroquímica y Corrosión, Universidad Nacional del Sur, 8000, Bahía Blanca, Argentina aut NATIONALLICENCE 700 1- Duarte M.M.E. Instituto de Ingeniería Electroquímica y Corrosión, Universidad Nacional del Sur, 8000, Bahía Blanca, Argentina aut NATIONALLICENCE 700 1- Mayer C.E. Instituto de Ingeniería Electroquímica y Corrosión, Universidad Nacional del Sur, 8000, Bahía Blanca, Argentina aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/7(2000-07-01), 831-838 0021-891X 30:7<831 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer