ABSTRACT

Chemical oxidation at ambient temperatures is perhaps the most common treatment technology for cyanide in contaminated waters. Oxidation technologies, such as alkaline chlorination and ozonation perform well for free and weak metal-cyanide complexes (weak acid dissociable cyanide [WAD]) in water, soil slurries, and sludges [1-5]. However, energy-intensive oxidation technologies, such as

CYWS “L1666_C020” — 2005/10/12 — 17:38 — page 394 — #2

are necessary to treat strong metal-cyanide complexes in water, soil slurries, and sludges [5].