Abstract
The work studies the process of Cd2+ and Zn2+ cations transfer from an electrolyte to a near-membrane zone and through a cation-exchange membrane RALEX®CM-PES 11-66 at a two-chamber electrolyzer and the cations reduction as metals. The electrolyte of an anode chamber imitated possible composition of the industrial passivating baths for cadmium and zinc electroplating and contained 50 g/L sodium dichromate, 10 g/L sulfuric acid and 3 g/L Cd2+ or 1.755 g/L Zn2+. A catholyte was presented by 1% aqueous sulfuric acid. A titanium plate (VT0 standard) was taken as a cathode, and lead (C2 grade) was taken as an anode. Various hydrodynamic conditions were studied as to their effect on the regularity of mass-transfer of impurity ions at the near-membrane zone with and without forced mixing of anolytes. Transfer of the impurity ions of Cd2+, Zn2+ through the cation-exchange membrane with cadmium and zinc reduction at the cathode was studied at various current densities and various hydrodynamic conditions. Enhancement patterns of metallic cadmium and zinc are studied as a function of the current density increased and the forced mixing applied.
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Serdiuk, V., Sklabinskyi, V., Bolshanina, S., Ableyev, A., Dychenko, T. (2020). Effect of Hydrodynamic Parameters on Membrane Electrolysis Enhancement. In: Ivanov, V., Pavlenko, I., Liaposhchenko, O., Machado, J., Edl, M. (eds) Advances in Design, Simulation and Manufacturing III. DSMIE 2020. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-50491-5_22
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DOI: https://doi.org/10.1007/978-3-030-50491-5_22
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