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    Batch and column studies of phosphate and nitrate adsorption on waste solids containing boron impurity

    194201_194201.pdf (1.061Mb)
    Access Status
    Open access
    Authors
    Olgun, A.
    Atar, Necip
    Wang, Shaobin
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Olgun, Asim and Atar, Necip and Wang, Shaobin. 2013. Batch and column studies of phosphate and nitrate adsorption on waste solids containing boron impurity. Chemical Engineering Journal. 222: pp. 108-119.
    Source Title
    Chemical Engineering Journal
    DOI
    10.1016/j.cej.2013.02.029
    ISSN
    1385-8947
    Remarks

    NOTICE: This is the author’s version of a work that was accepted for publication in Chemical Engineering Journal. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published Chemical Engineering Journal, Volume 222, 15 April 2013, Pages 108–119. http://dx.doi.org/10.1016/j.cej.2013.02.029

    URI
    http://hdl.handle.net/20.500.11937/38249
    Collection
    • Curtin Research Publications
    Abstract

    In the present study, we investigated the removal characteristics of phosphate and nitrate through adsorption on boron waste (BW) and heat treated boron waste (BW400) under batch equilibrium and column flow conditions. The effects of pH, contact time, initial solution concentration, and temperature on the uptake of both anions by the adsorbents in batch operation were examined. The equilibrium data were fitted to different types of adsorption isotherms. Langmuir adsorption model showed the best fit to the experimental adsorption data. The data were further analyzed on the basis of the Lagergren first order, pseudo-second-order and intraparticle diffusion kinetic models. The maximum adsorption capacities of heat treated BW for nitrate and phosphate were approximately 63.2 and 52.5 mg g-1, respectively, which shows higher maximum capacity for phosphate and a similar capacity for nitrate in comparison with other adsorbents used. Breakthrough curves obtained from fixed-bed column tests showed that column adsorption capacities provided strong evidence of the potential of BW400 for the technological applications of phosphate and nitrate removal from aqueous solutions.

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