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    Biotic and abiotic processes contributing to the removal of Mn(ll), Co(ll) and Cd(ll) from Pinal Creek, Globe, Arizona

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    Author
    Flinchbaugh, Hans
    Issue Date
    1996
    Advisor
    Conklin, Martha
    
    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
    Pinal Creek, near Globe, Arizona, has been contaminated by mixing with polluted groundwater caused by copper mining activities over the past century. The focus of this study was to determine the chemical and biological factors that contribute to the removal of heavy metals (e.g. Mn(II), Co(II), and Cd(II)) in the hyporheic zone at Pinal Creek and to determine the stability of the manganese oxides present when exposed to acidic groundwater. Laboratory batch experiment results indicate that the abiotic removal of Mn(II) was small (7 - 29 % ) compared to the biotic removal ( 61 - 99 % ) under conditions similar to those found naturally at Pinal Creek (pH= 7.5, 25 °C, atmospheric oxygen). Co(II) and Cd(II) removal was dominated by abiotic removal processes. Significant amounts of Mn(II) and Cd(II) were released into solution when the pH in batches was lowered to 4, however cobalt was found to be irreversibly bound.
    Type
    text
    Thesis-Reproduction (electronic)
    Degree Name
    M.S.
    Degree Level
    masters
    Degree Program
    Graduate College
    Hydrology and Water Resources
    Degree Grantor
    University of Arizona
    Collections
    Master's Theses

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