Acidic leaching of cadmium from zinc plant residue

• Autorzy: Gharabaghi M. , Irannajad M. , Azadmehr A. R.
• Języki publikacji: EN

Abstrakty

EN

In the present paper cadmium leaching from zinc plant residue using sulphuric acid was examined. The zinc plant residue is a hazardous waste which is produced in the hydrometallurgical zinc plant and it contains considerable amounts of metals such as zinc, cadmium and nickel. The effects of sulphuric acid and other important factors such as reaction time, solid-to-liquid ratio, particle size, stirring speed and temperature on cadmium recovery were investigated. The concentration of cadmium in solution was observed to increase with the increase of the reaction time, acid concentration, stirring speed and temperature. Decreasing of solid/liquid ratio and particle size were also beneficial for cadmium recovery. The largest cadmium leaching recovery (97%) was obtained after 30 minutes of treatment at 25°C using H2SO4 (8% (v/v)) at solid-to-liquid ratio of 0.10. XRD and SEM analyses of the residues obtained after leaching showed that the cadmium containing phase had been decomposed in the leaching residues. The results indicated that it is possible to use this waste as a secondary resource for cadmium recovery.

Słowa kluczowe

EN

hazardous waste; leaching; cadmium extraction; zinc plant residue

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2011
• Tom: Vol. 47
• Strony: 91--104
• Opis fizyczny: Bibliogr. 33 poz.

Twórcy

autor

Gharabaghi M.

autor

Irannajad M.

autor

Azadmehr A. R.

• Department of Mining and Metallurgical Eng., Amirkabir University of Technology, Hafez Ave., Tehran, Iran,

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