Journal article
Repeated Exposure of Escherichia coli to Free Chlorine: Production of Strains Possessing Altered Sensitivity
WATER, AIR, AND SOIL POLLUT, Vol.16(2), pp.233-242
01 Jan 1981
Abstract
E. coli ATCC 11229 was exposed to Cl under demand-free conditions, and surviving colonies examined. Survivors at low degrees of inactivation did not appear to possess altered sensitivity, even when successively exposed and subcultured through 8 passages. Survivors at high degrees of inactivation appeared to have a greatly increased sensitivity towards free Cl. The type culture, and the sensitive strain had identical growth curves, microscopic appearance, and biochemical traits. The initial rate of inactivation at pH 7 appeared to follow saturation-type kinetics, previously reported for other organisms and Cl. Implications for water treatment and reuse are discussed, as well as possible mechanisms explaining the findings of this study.
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Details
- Title
- Repeated Exposure of Escherichia coli to Free Chlorine: Production of Strains Possessing Altered Sensitivity
- Creators
- C HaasE Morrison
- Publication Details
- WATER, AIR, AND SOIL POLLUT, Vol.16(2), pp.233-242
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Identifiers
- 991019189118204721