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Inactivation ofNaegleria grubericysts by chlorine dioxide

Authors
Journal
Water Research
0043-1354
Publisher
Elsevier
Publication Date
Volume
19
Issue
6
Identifiers
DOI: 10.1016/0043-1354(85)90127-7
Keywords
  • Inactivation
  • Chlorine Dioxide
  • Cysts
  • Kinetics
  • Ph
  • Temperature
  • Water

Abstract

Abstract Investigations were carried out to determine the kinetics of chlorine dioxide inactivation of Naegleria gruberi cysts and the influence of pH from 5 to 9, temperature from 5 to 30°C, cyst age from 3 to 12 days, and cyst clumping. Inactivation was characterized by an initial concave downward shoulder followed by an essentially linear portion but the process obeyed Watson's Law. At 25°C and pH 7 the mean concentration time product for 99% inactivation was 5.5 mg·min l −1. These products varied inversely with temperature and pH.

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