Method of processing cyanide ions by ozone

Details Method of processing cyanide ions by ozone Method of processing cyanide ions by ozone

C - Chemistry, Metallurgy

02

F

C02F 1/78 (2006.01) C22B 11/08 (2006.01)

Patent

CA 2290006

A method is provided for decomposing free cyanide ion and metallic cyano complex ions in a liquid, comprising the steps of bringing the liquid into contact with ozone gas in a counterflow relation in the condition that the pH of the liquid is at least with the mass flow rate of the ozone in the ozone gas up to 20 mg per minute per liter of liquid, and then bringing the liquid into contact in a counterflow relation with ozone gas having an ozone concentration of at least 150 g/Nm3 in the condition that the pH of the liquid is 7.0 to 9.5.

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