Liquid purification or separation – Processes – Chemical treatment
Patent
1992-08-07
1993-09-14
Wyse, Thomas
Liquid purification or separation
Processes
Chemical treatment
210763, 210908, C02F 158
Patent
active
052445810
ABSTRACT:
A chemical process for the catalytic oxidation of formaldehyde and other organic compounds contained in a dilute aqueous solution, particularly waste water. The inventive feature resides in the use of a cobalt catalyst, at ambient temperature, at a pH of 5.5, to increase the rate of oxidation of the organic compounds when hypochlorous acid is the oxidant. The latter may be provided by a chlorine compound, such as sodium hypochlorate, calcium hypochlorite or chlorine gas dissolved in water.
REFERENCES:
patent: 3965249 (1976-06-01), Kinosz
patent: 4297333 (1981-10-01), Crawford et al.
patent: 4732688 (1988-03-01), Bryan et al.
patent: 4764286 (1988-08-01), Bon et al.
Koltos E. Philip
The United States of America as represented by the Secretary of
Wyse Thomas
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