Anodically polarized surface for biofouling and scale control

Details Anodically polarized surface for biofouling and scale control Anodically polarized surface for biofouling and scale control

1981-02-23

1982-08-24

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204147, 204149, 204DIG9, C25B 102

Patent

active

043459811

ABSTRACT:
Biofouling and scale control in conductive aqueous systems is effected on metal, preferably valve metal such as titanium, surfaces on which such fouling normally occurs by applying thereto a stable electrocatalytic coating, anodically polarizing said valve metal coating such that essentially only oxygen is evolved at the surface thereof, preferably at a rate of at least about 4.66 millimoles per square meter per hour without evolution of any chlorine. Periodic current reversal is effected to forestall biofouling upon any cathode utilized in implementing the instant invention.

REFERENCES:
patent: 1956411 (1934-04-01), Bonine
patent: 3503861 (1970-03-01), Volpe
patent: 3843507 (1974-10-01), Kwan
patent: 4033830 (1977-07-01), Fletcher
patent: 4256556 (1981-03-01), Bennett et al.

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