Ultrasonically enhanced leaching: removal and destruction of cyanide and other ions from used carbon cathodes.

Journal article

The used carbon cathodes ('Spent Pot Lining', SPL) from aluminium smelting are typically contaminated with F-, CN- and Na+ which must be removed before disposal to produce material which satisfies environmental guidelines in respect of maximum rates of ion release. Leaching of powdered and crushed carbon samples in aqueous solution were studied in the presence and absence of ultrasound. First, it was demonstrated that the total leaching of F-, CN- and Na+ from the carbon powder could be accom...

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Authors: Saterlay, A; Hong, Q; Compton, R; Clarkson, J

• Publication status: Published
• Publisher: Elsevier
• Journal: Ultrasonics sonochemistry
• Volume: 7
• Issue: 1
• Pages: 1-6
• Publication date: 2000-01-01
• DOI: 10.1016/s1350-4177(99)00025-5
• EISSN: 1873-2828
• ISSN: 1350-4177
• Language: English
• Keywords: leaching; carbon cathodes; aluminium smelter; cyanide destruction; ultrasound