Oxidation of cyanide in water by singlet oxygen generated by the reaction between hydrogen peroxide and hypochlorite

• Published in: Minerals engineering Vol. 50-51; pp. 57 - 63
• Main Authors: Teixeira, Luiz Alberto Cesar, Arellano, Meryelem Tania Churampi, Marquez Sarmiento, Cristian, Yokoyama, Lidia, Araujo, Fabiana Valeria da Fonseca
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.09.2013
• Subjects: Cyanide effluent treatment; Cyanide oxidation; Cyanides; Hydrogen peroxide; Hypochlorite; Oxidants; Oxidation; Oxidizing agents; Reaction kinetics; Singlet oxygen; Hydrogen peroxide; Singlet oxygen; Cyanide oxidation; Cyanide effluent treatment; Hypochlorite

•The kinetics of oxidation of CN by singlet oxygen have been quantified.•Singlet oxidation of cyanide to cyanate is faster than competing processes.•20min for [CN] reduction from 100 to 0.2mg/L in a batch reaction.•Fast oxidation conditions do not require addition of catalysts. The synergistic combi...