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    Inactivation of Escherichia coli and coliphage MS-2 by chloramine and copper

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    azu_td_1345420_sip1_m.pdf
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    Author
    Zhou, Xia, 1953-
    Issue Date
    1991
    Keywords
    Biology, Microbiology.
    Environmental Sciences.
    Advisor
    Price, Ralph L.
    Gerba, Charles P.
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    The efficacy of chloramine in the presence of copper chloride was evaluated for the inactivation of an indicator bacteria Escherichia coli and coliphage MS-2. Both microorganisms were exposed to chloramine with and without copper chloride. Results showed an increase in the inactivation rate of Escherichia coli and MS-2 phage with an increasing concentration of chloramine. To achieve a 99 percent reduction in the number of Escherichia coli, an exposure of 46, 21, 6, and 5 minutes was necessary for 1, 2.5, 5, and 10 mg chloramine/L, respectively. A 99 percent reduction of MS-2 phage occurred after 60 and 25 minutes of exposure to 5 and 10 mg chloramine/L. Chloramine in the presence of copper increased the inactivation rate of Escherichia coli and MS-2 phage. The time needed for 99 percent inactivation of E. coli and MS-2 phage was reduced. Copper increases the inactivation rate of bacteria and viruses by chloramine. (Abstract shortened with permission of author.)
    Type
    text
    Thesis-Reproduction (electronic)
    Degree Name
    M.S.
    Degree Level
    masters
    Degree Program
    Graduate College
    Nutrition and Food Sciences
    Degree Grantor
    University of Arizona
    Collections
    Master's Theses

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