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Enhancement of Chlorine Inactivation of Escherichia coli by Sodium Ions
Journal article

Enhancement of Chlorine Inactivation of Escherichia coli by Sodium Ions

C Haas and M A Zapkin
Water Chlorination: Environmental Impact and Health Effects; Volume 4 Book 2: Environment, Health, and Risk. Ann Arbor Science, Ann Arbor, MI. 1983. p 1087-1096, 2 fig, 3 tab, 19 ref
01 Jan 1983

Abstract

Bacteria Chlorination Chlorine Coliforms Disinfection Sodium Synergistic effects Water treatment
Sodium ions (0.1M sodium chloride or 0.1M sodium nitrate) can enhance the rate of inactivation of E. coli by free chlorine. The process kinetics are consistent with the extistence of an NaOCl ion pair of biocidal efficiency approximately equal to HOCl. Theoretical calculations indicate that, under proper circumstances, E. coli may exhibit greater sensitivity to free chlorine at high pH than at low pH. (Cassar-PTT)

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