Paper

Cathodic Deposition of Cadmium from Diluted Solutions onto Stainless Steel Rotating Disc Electrode

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Authors:

Abbas Hamid Sulaymon; Adel Obaid Sharif; Thana Kamil Al-Shalchi; Ali Hussein Abbar

Abstract

The mass transport properties of a stainless steel electrode were characterized based on the electrodeposition of cadmium from diluted solutions containing Cd (II) ions. The study was performed in a three–electrode configuration using 0.5 M of sodium sulfate as the supporting electrolyte with Cd (II) concentration ranging from 50 to 200 mg/L. From the current potential curves under conditions of the experiment, the limiting currents were determined at potential of -1.0 V against a saturated calomel electrode, and were used to calculate the diffusion coefficients, the diffusion and hydrodynamic layer thicknesses and the mass transfer coefficients for Cd (II). Dimensionless Sherwood, Reynolds and Schmidt numbers were fitted to final empirical correlation: Sh=0.664〖Re〗^(0.528) 〖Sc〗^(1/3) For 25101<Re>52726 and 449<Sc>787.

Keywords

Electrochemical Deposition; Cadmium; Rotating Disk Electrode; Stainless Steel Cathode

StartPage

175

EndPage

182

Doi

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