Journal article
Physiological Alterations of Vegetative MIcroorganisms Resulting from Chlorination
Journal of the Water Pollution Control Federation, Vol.52(7), pp.1976-1989
01 Jul 1980
Abstract
Fermentative yeasts and Group IV atypical acid-fast bacteria have been proposed as new indicators of disinfection efficiency to supplement or replace coliforms in the assessment of the biological health hazard, particularly from enteric viruses. The effects of free available chlorine on physiological processes of representative organisms from the yeast, acid-fast, and coliform groups were determined in chlorine-demand-free systems. After exposure to chlorine, leakage of ultraviolet-absorbing material and total organic carbon from the test organisms was observed. Exposure to chlorine inhibited respiration under certain conditions, altered cellular potassium uptake and retention, and diminished the rate of protein and DNA synthesis. Organism survival after exposure to chlorine was correlated with reversion frequency. Free available chlorine acts at or near the cell membrane, as well as on the cell DNA. It was predicted that the acid-fast and yeast organisms would maintain increased chlorine resistance as compared to coliforms under many circumstances. (Carroll-FRC)
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Details
- Title
- Physiological Alterations of Vegetative MIcroorganisms Resulting from Chlorination
- Creators
- C HaasR Engelbrecht
- Publication Details
- Journal of the Water Pollution Control Federation, Vol.52(7), pp.1976-1989
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Identifiers
- 991019189032104721