Process for detoxification of cyanides and nitriles with peroxygen compounds

US3970554A · kind A · utility

Assignee

• Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler

Inventors

• Joachim Fischer · Rodgau, DE
• Helmut Knorre · Seligenstadt, DE
• Gerhard Pohl · St. Georgen, DE

Key dates

• Filing date: Oct 16, 1974
• Grant date: Jul 20, 1976
• Expiry date: Oct 16, 1994

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F1/766
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

Waste water containing cyanides, cyanohydrins and/or organic nitriles are detoxified by adding a peroxide compound in the presence of iodide ion or free iodine, in a given case in the presence of silver ions.