Determining basic technological parameters for the process of electrochemical extraction of copper from acid sulfate concentrated technological solutions

Authors

DOI:

https://doi.org/10.15587/1729-4061.2025.341531

Keywords:

cathodic extraction, spent technological solutions, technological parameters, diaphragm and diaphragm-free electrolysis

Abstract

This study investigates concentrated model solutions, acid sulfate spent technological solutions (STSs) from surface preparation and coating operations by a number of enterprises, in order to devise unified technologies and to design relevant equipment.

To substantiate the basic parameters for an electrolysis system within the framework of the system approach (Quality Function Deployment), it is shown that regardless of the concept and mechanism of electrochemical transformations, one of the main elements is redox reactions that occur both at the electrode-solution interface and in the solution volume.

This paper reports experimental studies on electrochemical cathodic extraction of copper from acid sulfate concentrated technological solutions under conditions of non-stationary composition and changes in the properties of STSs. The basic technological parameters of the electrolysis process have been defined; a cathodic extraction installation of metal (copper) has been designed.

To adapt the installation to changes in technological parameters and to avoid the formation of by-products together with the main product (copper), installation and dismantling of cathodes and diaphragms are implied. To eliminate secondary contamination of STS, it is proposed to abandon the use of reagents in local cycles at all stages of STS purification in favor of electrochemical technology.

The kinetic data reported here (current density, current consumption/1 mol, deposition rate) make it possible to define the basic principles of control and regulation of the electrolysis process. The pH and Eh values make it possible to adjust the type of precipitate (foil, precipitate containing foreign substances), as well as determine the purpose of the technological process (regeneration, disposal).

It is recommended to use diaphragm-free electrolysis in local regeneration cycles and diaphragm electrolysis in local disposal cycles

Author Biographies

Mykola Yatskov, National University of Water and Environmental Engineering

PhD, Senior Researcher, Professor

Department of Chemistry and Physics

Natalia Korchyk, National University of Water and Environmental Engineering

PhD, Associate Professor

Department of Chemistry and Physics

Nadia Budenkova, National University of Water and Environmental Engineering

PhD, Associate Professor

Department of Chemistry and Physics

Oksana Mysina, National University of Water and Environmental Engineering

Senior Lecturer

Department of Chemistry and Physics

Serhii Kovalchuk, Separate Structural Unit “Rivne Technical Vocational College of the National University of Political Science and Technology”

PhD, Associate Professor

Department of Ecology

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Determining basic technological parameters for the process of electrochemical extraction of copper from acid sulfate concentrated technological solutions

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Published

2025-10-28

How to Cite

Yatskov, M., Korchyk, N., Budenkova, N., Mysina, O., & Kovalchuk, S. (2025). Determining basic technological parameters for the process of electrochemical extraction of copper from acid sulfate concentrated technological solutions. Eastern-European Journal of Enterprise Technologies, 5(10 (137), 41–51. https://doi.org/10.15587/1729-4061.2025.341531

Issue

Vol. 5 No. 10 (137) (2025): Ecology

Section

Ecology

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Copyright (c) 2025 Mykola Yatskov, Natalia Korchyk, Nadia Budenkova, Oksana Mysina, Serhii Kovalchuk

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