Divalent silver halide bactericide

Details Divalent silver halide bactericide Divalent silver halide bactericide

1991-05-09

1992-01-07

Silverman, Stanley S.

Liquid purification or separation

Processes

Chemical treatment

210759, 210169, 424601, 424602, 424604, 424618, 514495, 422 19, 422 28, C02F 150

Patent

active

050789023

ABSTRACT:
Divalent silver halides provide a source for divalent bactericidal silver ions in the presence of persulfate. The halides are especially effective when applied to water used in industrial cooling installations, hot tubs and swimming pools and will conform to stringent EPA requirements for waters utilized for bathing as in tubs and pools of 100% kills of 100 K/cc E. Coli coliforms within 10 minutes, exemplary of which are the chloride and bromide which give 100% kills within 5 minutes. The halides, of course, can be used in salty water since they are solids immune from halide action that would otherwise precipitate soluble divalent silver from solution.

REFERENCES:
patent: 4055655 (1977-10-01), Maurer et al.
patent: 4092245 (1978-05-01), Franks et al.
patent: 5017295 (1991-05-01), Antelman

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