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J Water SRT - Aqua 53 (2004) 567-572

Water disinfection using electrolytically generated silver, copper and gold ions

R. A. Khaydarov, R. R. Khaydarov, R. L. Olsen and S. E. Rogers

Institute of Nuclear Physics, 702132, Ulugbek, Tashkent, Uzbekistan Tel.: (998-712) 606144 Fax: (998-712) 642590 E-mail: physicist@sarkor.uz

Institute of Nuclear Physics, 702132, Ulugbek, Tashkent, Uzbekistan Tel.: (998-712) 606144 Fax: (998-712) 642590 E-mail: physicist@sarkor.uz

Camp Dresser & McKee Inc., 1331 17th Street, Suite 1200, Denver, CO 80202, USA

Rogers Associates, 7040 West Sixty-First Avenue, Arvada, Denver, CO 80003-5306, USA


ABSTRACT

The investigation described in this article examined an oligodynamic water disinfection method employing metal ions (Ag+, Cu2+, Au) generated by an electrolytic process. The efficacy of using different silver/copper/gold combinations (within the limits of current drinking water regulations) for killing E. coli, Legionella pneumophila, Salmonella and other pathogens was examined. The study investigated the dependence of bacterial killing time against metal ion concentration, different initial bacteria concentrations (from 103 to 1012 CFU l−1), and the influence of different ion (Cl, SO2−4, S2−, Fe2+, Fe3+) concentrations on the disinfection process.


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