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A 3-cell electrodialysis system for the removal of copper ions from electroplating wastewater

S. CAPRARESCU1,* , D. I. VAIREANU1, A. COJOCARU1, I. MAIOR1, V. PURCAR2

Affiliation

  1. „Politehnica” University of Bucharest, Faculty of Applied Chemistry and Materials Science, Department of Inorganic Chemistry, Applied Physical Chemistry and Electrochemistry, 132 Calea Grivitei, 01073
  2. National Research and Development Institute for Chemistry and Petrochemistry ICECHIM, Polymer Department, Splaiul Independentei 202, 060021, 6th district, Bucharest, Romania

Abstract

In this paper, the removal of ionic copper from a electroplating waste streams has been studied using a three-compartment electrodialysis cell and different type of ion-exchange membranes. A series of essential parameters for this process were taken into account (electrolyte concentration, conductivity, pH) and their influence on the percent extraction was studies for different values of the applied cell voltage. Chemical stability of ion exchange membranes was investigated by Fourier transformed infrared spectroscopy. The experimental results show that the percent extraction of copper ions is higher by using electrodialysis, in this case were obtained values above 80% for concentration of copper ions of 8000 ppm..

Keywords

Electrodialysis, Copper ions, Ion-exchange membrane, Percent extraction, FT-IR.

Citation

S. CAPRARESCU, D. I. VAIREANU, A. COJOCARU, I. MAIOR, V. PURCAR, A 3-cell electrodialysis system for the removal of copper ions from electroplating wastewater, Optoelectronics and Advanced Materials - Rapid Communications, 5, 12, December 2011, pp.1346-1351 (2011).

Submitted at: March 6, 2011

Accepted at: Nov. 24, 2011