MODELING A PROCESS FOR THE REMOVAL OF CADMIUM FROM SIMULATED WASTEWATERS BY ELECTRODEPOSITION ON STAINLESS STEEEL TUBES BUNDLE
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Abstract
Electrochemical processes can provide valuable contributions to the protection of the environment through implementation of effluent treatment and production-integrated processes for the
minimization of waste and toxic compounds. The performance of a novel pilot scale, batch re-cycled, flow-through cell, with stainless steel tubes bundle cathode in the removal of cadmium was investigated utilizing the potential results obtained from a batch mode. The studied electrochemical reaction was the cathodic reduction of Cd+2 using 0.5 M sodium sulphate as supporting electrolyte. The analyzed parameters were different initial Cd+2 concentrations (50,100, 200, 300, 400 ppm) and different electrolyte flow-rates (100, 200, 250, 300, 350 L/hr), the tubes number was 920 of 0.6 cm diameters.
The overall empirical mass transfer correlation was found to be: Sh = 0.051 Re 0.859 Sc1/3
For 5 < Re < 20 and Sc = 649 Experimental results, analysis and correlations showed good performance of the cell and proved its adequacy in the removal of Cd+2 from simulated effluents.
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References
• Al-Shalchi, T. K. (2010), “Removal of Cadmium from Simulated Wastewaters by Electro-Deposition on Stainless Steel Tubes Bundle ”, PhD Thesis, College of Engineering, University of Baghdad.
• Bertazzoli, R., Rodrigues, C. A., Dallan, E., J., Fukunaga, M. T., Lanza, M. R. V., Leme, R. R., Widner, R. C. (1998), “Mass Transport Properties of a Flow-Through Electrolytic Reactor Using a Porous Electrode: Performance and Figures of Merit for Pb II Removal”, Braz. J. Chem. Eng. Vol. 15 No. 4.
• Lenntech, Water Treatment & Purification Holding BV (2009), “Heavy Metals”, http://www.lenntech.com.
• Pickett, D. J. (1979), “Electrochemical Reactor Design”, Elsevier Scientific Publishing Company.
• Pletcher, D., White, I., Walsh, F. C., Millington, J. P. (1991), “Reticulated Vitreous Carbon Cathodes for Metal Ion Removal from Process Streams; Part I: Mass Transport Studies”, Journal of Applied Electrochemistry 21.
• Simonsson, D. (1997), “Electrochemistry for a Cleaner Environment”, Chemical Society Review Vol. 26.
• Tramontina, J., Azambuja, D. S., Piatnicki, M. S. (2002), “Removal of Cd+2 Ion from Diluted Aqueous Solutions by Electrodeposition on Reticulated Vitreous Carbon Electrodes”, Mat. Res., Vol. 4, No. 3.