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Voltammetric and electrodeposition study for the recovery of antimony from effluents generated in the copper electrorefining process

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Voltammetric and electrodeposition study for the recovery of antimony from effluents generated in the copper electrorefining process

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dc.contributor.author	Hernández Pérez, L.
dc.contributor.author	Carrillo-Abad, J.
dc.contributor.author	Ortega, E.M.
dc.contributor.author	Pérez-Herranz V.
dc.contributor.author	Montañés, M.T.
dc.contributor.author	Martí-Calatayud, Manuel César
dc.date.accessioned	2023-04-04T11:44:26Z
dc.date.available	2023-04-04T11:44:26Z
dc.date.issued	2023
dc.identifier.citation	Hernández Pérez, L. Carrillo-Abad, J. Ortega, E.M. Pérez-Herranz V. Montañés, M.T. Martí-Calatayud, Manuel César 2023 Voltammetric and electrodeposition study for the recovery of antimony from effluents generated in the copper electrorefining process Journal Of Environmental Chemical Engineering 11 109139
dc.identifier.uri	https://hdl.handle.net/10550/86031
dc.description.abstract	Antimony is a metalloid with limited availability as a primary resource, but it is commonly found as an impurity in effluents generated in the copper metallurgy. Thus, the development of clean and selective processes to recover antimony from these wastewaters would improve the sustainability of the copper production. In this work, an emulated effluent of the copper electrorefining industry that contains antimony and hydrochloric acid was characterized by means of voltammetric and electrodeposition tests using two different cell configurations: a static cell, and a dynamic cell with a rotating disk electrode (RDE). Voltammograms were obtained at varying hydrochloric acid and antimony concentrations, inversion potentials, scan rates and RDE rotation rates. Two main conclusions were drawn: (a) the deposition of antimony is a mass transfer-controlled process; and (b) an increase in hydrochloric acid concentration improves the deposition of antimony. The diffusion coefficient of antimony species was obtained applying the Randles-ˇ Sevˇcík and the Levich equations; both of them providing very similar values (5.29 ± 0.20 ⋅ 10− 6 cm2 s − 1). The effective electrodeposition of antimony from highly concentrated hydrochloric acid solutions was demonstrated. The surface examination of the electrodes revealed that compact and adherent deposits of antimony could be obtained under operating conditions that minimize the hydrogen evolution reaction in both potentiostatic and galvanostatic modes. Intensified convective regimes by using the RDE improve the supply of dissolved antimony towards the electrode surface, thus leading to a notorious increase in current density and, consequently, in the rate of antimony deposition.
dc.language.iso	eng
dc.relation.ispartof	Journal Of Environmental Chemical Engineering, 2023, vol. 11, p. 109139
dc.subject	Fluids
dc.subject	Indústria química
dc.subject	Química
dc.title	Voltammetric and electrodeposition study for the recovery of antimony from effluents generated in the copper electrorefining process
dc.type	journal article	es_ES
dc.date.updated	2023-04-04T11:44:27Z
dc.identifier.doi	10.1016/j.jece.2022.109139
dc.identifier.idgrec	157247
dc.rights.accessRights	open access	es_ES