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Recovery of Zinc, Copper, Nickel, and Cobalt from Electroplating Wastewater by Electro-Nanofiltration

  • Applied Electrochemistry and Metal Corrosion Protection
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Abstract

The work is devoted to recovery of zinc, copper, nickel and cobalt from electroplating wastewater by electro-nanofiltration. The objects of study were the domestically produced nanofiltration membranes OPMN-K, OPMN-P (JSC Vladipor) and multicomponent technological solutions and wastewater from electroplating lines containing ions Cu2+, Zn2+, Co2+, Ni2+. The dependences of the retention coefficients of metal cations and the specific output flow on the applied pressure are obtained. The optimal current density for carrying out the electro-nanofiltration separation of electroplating wastewater has been determined. It was found that with an increase in the transmembrane pressure as the main driving force of the process, the retention coefficient rises, and at values exceeding the nominal working pressure by 25%, the retention coefficient begins to decrease for both types of membranes. The transfer numbers for the studied membranes were calculated for the retained cations. It is noted that the retention capacity of the OPMN-P membrane is higher than that of the OPMN-K membrane. The specific output flow increases with an increase in transmembrane pressure due to a rise in the driving force of the process on account of an increase in flow rate.

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Authors and Affiliations

  1. Tambov State Technical University, 392000, Tambov, Russia

    S. I. Lazarev, I. V. Khorokhorina & D. S. Lazarev

  2. Derzhavin Tambov State University, 392000, Tambov, Russia

    K. V. Shestakov

Authors
  1. S. I. Lazarev
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  2. I. V. Khorokhorina
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  3. K. V. Shestakov
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  4. D. S. Lazarev
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Contributions

S.I. Lazarev, I.V. Khorokhorina defined the purpose of the research, identified the objects of research and selected the methods of conducting experiments; K.V. Shestakov carried out an experimental study and calculation of the transfer numbers of metal cations through permeable membranes for the solutions under study; I.V. Khorokhorina conducted research on the apparatus–membrane–solution system; S.I. Lazarev collected literary data; D.S. Lazarev carried out an experimental study of the kinetic parameters of the nanofiltration process of separation of solutions, calculated the kinetic coefficients; S.I. Lazarev, I.V. Khorokhorina analyzed and generalized the obtained data on all parameters of the membrane process; I.V. Khorokhorina developed a technological scheme using a membrane unit; S.I. Lazarev, I.V. Khorokhorina assessed the ecological and economic efficiency of the developed technological scheme.

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Correspondence to I. V. Khorokhorina.

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The authors declare that they have no conflicts of interest requiring disclosure in this article.

Additional information

Translated from Zhurnal Prikladnoi Khimii, No. 8, pp. 159–164, January, 2021 https://doi.org/10.31857/S0044461821080120

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Lazarev, S.I., Khorokhorina, I.V., Shestakov, K.V. et al. Recovery of Zinc, Copper, Nickel, and Cobalt from Electroplating Wastewater by Electro-Nanofiltration. Russ J Appl Chem 94, 1105–1110 (2021). https://doi.org/10.1134/S1070427221080127

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  • DOI: https://doi.org/10.1134/S1070427221080127

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