Evaluation of Chlorine for Inactivation of Bioterrorism Agents in Drinking Water

Feng Liu; Zhong Lin Chen; Sheng Chang

doi:10.4028/www.scientific.net/AMM.295-298.599

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 295-298Evaluation of Chlorine for Inactivation of...

Evaluation of Chlorine for Inactivation of Bioterrorism Agents in Drinking Water

Abstract:

The object of this paper is to measure the characteristics of the inactivation kinetics of B. subtilis spores-surrogates for B. anthracis spores following the treatment with free chlorine. The results indicated that the inactivation kinetics of B. subtilis spores with free chlorine was characterized by a lag phase followed by a pseudo-first-order rate of inactivation. The magnitude of the lag phase increased and the rate of subsequent inactivation decreased with the decreasing temperature, for the experimental temperature range of 1-30 °C. The same tendency of inactivation kinetics curves was observed for the increasing solution pH, for the experimental pH range of 6-8. The CT concept was proved to be valid for the inactivation kinetics of B. subtilis spores with free chlorine under the conditions investigated. The validity of B. subtilis spores served as conservative surrogates for B. anthracis spore has been finally discussed.

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Periodical:

Applied Mechanics and Materials (Volumes 295-298)

Pages:

599-603

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.295-298.599

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Online since:

February 2013

Authors:

Feng Liu*, Zhong Lin Chen, Sheng Chang

Keywords:

B. Anthracis Spores, B. Subtilis Spores, Bioterrorism Agents, Inactivation Kinetics

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