Removal of cyanides by electrooxidation.
The paper describes a study on electro-oxidation of cyanides complexed with copper, present in metal plating wastewater. A detailed voltammetric study has indicated that formation in situ of the electrocatalytic film of copper oxide and electro-oxidation of cyanides probably occurs at the same anode potential. By contrary to other materials at which electro-oxidation of cyanide also occurs, at copper oxide elimination of cyanide occurs at a potential lower then the potential of hydroxide ion discharge.
Szpyrkowicz
Lidia
L
Department of Environmental Sciences, University of Venice, Dorsoduro 2137, 30123 Venice, Italy. lidia@unive.it
Ricci
Francesco
F
Daniele
Salvatore
S
D003300:Copper / Q000737:chemistry; D003486:Cyanides / Q000737:chemistry* / Q000302:isolation & purification*; D004563:Electrochemistry; D004566:Electrodes; D007220:Industrial Waste; D008669:Metallurgy; D010084:Oxidation-Reduction; D014865:Waste Disposal, Fluid / Q000379:methods*; D018508:Water Purification / Q000379:methods*
D003486:Cyanides; D007220:Industrial Waste; D003300:Copper; C000520:cuprous oxide