• Login
    View Item 
    •   ResearchSpace Home
    • College of Agriculture, Engineering and Science
    • School of Chemistry and Physics
    • Chemistry
    • Masters Degrees (Chemistry)
    • View Item
    •   ResearchSpace Home
    • College of Agriculture, Engineering and Science
    • School of Chemistry and Physics
    • Chemistry
    • Masters Degrees (Chemistry)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Studies on ozone initiated inactivation of pathogenic bacteria in aqueous systems

    Thumbnail
    View/Open
    Favourite Zuma MSc 2008 2.doc.pdf (3.706Mb)
    Date
    2008
    Author
    Zuma, Favourite N.
    Metadata
    Show full item record
    Abstract
    The effect of ozone on the inactivation of two Gram-negative strains (Escherichia coli and Pseudomonas aeruginosa) and one Gram-positive endospore (Bacillus subtilis) bacteria, often present in water and the cause of some waterborne diseases was investigated as a function of ozone concentration and ozonation duration. Ozone was generated in situ using corona discharge methods where the ozone concentration ranged from 0.906 - 4.724 mg/L and the inactivation of the three microbes followed pseudo-first order kinetics with respect to the microbes. Three microbes were cultured and the influence of temperature and pH of the aqueous systems on the ozone initiated inactivation rate of the three microbes was also investigated. This study reports that molecular ozone is more effective than hydroxyl radicals initiated by the ozone chain reactions. Two suggested mechanisms for the antimicrobial effectiveness of ozone in water systems from the literature is discussed. The study also found that ozonation significantly decreased the Biological Oxygen Demand (BOD) value of natural water.
    URI
    http://hdl.handle.net/10413/438
    Collections
    • Masters Degrees (Chemistry) [255]

    DSpace software copyright © 2002-2013  Duraspace
    Contact Us | Send Feedback
    Theme by 
    @mire NV
     

     

    Browse

    All of ResearchSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsAdvisorsTypeThis CollectionBy Issue DateAuthorsTitlesSubjectsAdvisorsType

    My Account

    LoginRegister

    DSpace software copyright © 2002-2013  Duraspace
    Contact Us | Send Feedback
    Theme by 
    @mire NV