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    Simultaneous uptake of ammonium and phosphate ions by composites of y-alumina/potassium aluminosilicate gel

    Access Status
    Fulltext not available
    Authors
    Okada, K.
    Temuujin, Jadambaa
    Kameshima, Y.
    MacKenzie, K.
    Date
    2003
    Type
    Journal Article
    
    Metadata
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    Citation
    Okada, Kiyoshi and Temuujin, Jadambaa and Kameshima, Yoshikazu and MacKenzie, Kenneth. 2003. Simultaneous uptake of ammonium and phosphate ions by composites of y-alumina/potassium aluminosilicate gel. Materials Research Bulletin. 38 (5): pp. 749-756.
    Source Title
    Materials Research Bulletin
    DOI
    10.1016/S0025-5408(03)00064-3
    ISSN
    0025-5408
    Faculty
    School of Science and Computing
    Faculty of Science and Engineering
    Department of Imaging and Applied Physics
    Remarks

    The link to the journal’s home page is: http://www.elsevier.com/wps/find/journaldescription.cws_home/313/description#description. Copyright © 2003 Elsevier B.V. All rights reserved

    URI
    http://hdl.handle.net/20.500.11937/21033
    Collection
    • Curtin Research Publications
    Abstract

    The simultaneous uptake of ammonium and phosphate ions from solution by composites of g-alumina/potassium aluminosilicate (KAS) gel has been investigated. The composites were prepared by selective leaching of calcined kaolinite (Al2Si2O5(OH)4) using KOH solution, followed by neutralization of the leachate at pH 5.5 with nitric acid. The composites were reacted with solutions containing various concentrations of (NH4)2HPO4 at pH 5, 7 and 10 at room temperature for 24 h to examine their uptake of ammonium and phosphate ions. Simultaneous uptake of ammonium and phosphate ions was found, the uptake of ammonium ions being greater than for phosphate ions, especially at pH 7. This observation is considered to result mainly from the porous properties of the composites, which should therefore be controlled to enhance the simultaneous uptake of both ions, especially phosphate ion.

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