Determination of Mass Transfer Coefficient for Copper Electrodeposition by Limiting Current Technique.
Keywords:
Mass transfer coefficient, Electrodeposion of copper, Rotating cylinder electrode (RCE), Cupric ion removal, Limiting current technique (LCT)Abstract
An experimental study was conducted to investigate the mass transport behavior for electrochemical reduction of copper in the presence of 0.5M H2SO4 as supporting electrolyte by limiting current technique (LCT). The experiments were carried out via rotating cylinder electrode made of copper as cathode. The effects of various operating conditions: rotation rates 100, 200, 300, 400, and 500rpm, electrolyte temperatures 30, 45, and 60?, and cupric ions concentration 250, 500, and 750 ppm on mass transfer rate were studied. It was observed that mass transfer coefficient based mainly on rotation rates, then temperature and finally cupric ions concentration. The electrodeposition of cupric ions was proved to be a mass control. The mass transfer coefficient for rotating cylinder electrode was correlated with the aid of dimensionless groups as follows:
Sh = 0.236 Re0.664 Sc0.356
And the above correlation is a good agreement with eisenberg equation.
Downloads
Downloads
Published
Issue
Section
License
The authors retain the copyright of their manuscript by submitting the work to this journal, and all open access articles are distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC-BY-NC 4.0), which permits use for any non-commercial purpose, distribution, and reproduction in any medium, provided that the original work is properly cited.
