Process for the detoxification of aqueous solutions containing c

Details Process for the detoxification of aqueous solutions containing c Process for the detoxification of aqueous solutions containing c

1992-03-26

1993-04-20

Silverman, Stanley S.

Liquid purification or separation

Processes

Chemical treatment

210763, 210904, C02F 172

Patent

active

052040089

ABSTRACT:
A process is disclosed for the detoxication of aqueous solutions which contain cyanohydrins, in particular glycol nitrile, and/or nitriles and in addition contain decomposition catalyst for peroxide compounds, in particular manganese compounds, by perhydrolysis of the cyano compounds at temperatures of from 5.degree. to 80.degree. C. and pH values of from 8 to 12 by means of one or more peroxide compounds which are alkali metal percarbonates and perborates of alkali metals and alkaline earth metals and alkaline earth metal peroxides. The peroxide compounds are added as such to the solution to be detoxified or formed in situ in the solution to be detoxified. Sodium percarbonate is preferably used.

REFERENCES:
patent: 3715309 (1973-02-01), Zumbrunn et al.
patent: 3835047 (1974-09-01), Colin
patent: 3929636 (1975-12-01), Zumbrunn et al.
patent: 3970554 (1976-07-01), Fisher et al.
patent: 4743381 (1988-05-01), Bull

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