Electrodialytic Removal of Cadmium from Brackish Water: Effects of Operating Parameters

Authors

  • Mourad Sik Ali Desalination and Water Treatment Research Unit, Chemistry Department, Faculty of Sciences of Tunis, El Manar II 2092, Tunisia
  • Amor Hafiane Water Researches and Technologies Centre of Borj-Cedria, PO Box 273, 8020 Soliman, Tunisia
  • Mahmoud Dhahbi Water Researches and Technologies Centre of Borj-Cedria, PO Box 273, 8020 Soliman, Tunisia
  • Béchir Hamrouni Desalination and Water Treatment Research Unit, Chemistry Department, Faculty of Sciences of Tunis, El Manar II 2092, Tunisia

DOI:

https://doi.org/10.6000/1929-6037.2014.03.02.1

Keywords:

Electrodialysis, Synthetic brackish water, Demineralization rate, Cadmium removal, Process efficiency.

Abstract

The continuous increase of environmental regulations make interesting to find effective and efficient methods for processing effluents containing metal ions. This research focuses on cadmium removal from brackish water by an electro-membrane process: The electrodialysis. Experiments were carried out on synthetic brackish water solutions and using a laboratory scale electrodialysis system. The influence of several parameters on process efficiency was investigated. The efficiency of this process was assessed by the determination of five parameters: The demineralization rate, the removal rate and the transport flux of cadmium, the current efficiency and the specific power consumption. The applied voltage, the feed flow rate, the pH and cadmium initial concentration of the feed solution have a significant effect on the process efficiency and mainly on the cadmium transfer from dilute to concentrate compartment. In contrast, feed ionic strength seems to affect only the SPC and not the R(Cd).

Author Biography

Béchir Hamrouni, Desalination and Water Treatment Research Unit, Chemistry Department, Faculty of Sciences of Tunis, El Manar II 2092, Tunisia

Chemistry Department

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Published

2014-06-02

How to Cite

Ali, M. S., Hafiane, A., Dhahbi, M., & Hamrouni, B. (2014). Electrodialytic Removal of Cadmium from Brackish Water: Effects of Operating Parameters. Journal of Membrane and Separation Technology, 3(2), 67–77. https://doi.org/10.6000/1929-6037.2014.03.02.1

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