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    Preparation of bioadsorbents for effective adsorption of a reactive dye in aqueous solution

    Access Status
    Fulltext not available
    Authors
    Ibrahim, Shariff
    Shuy, Wan
    Ang, Ming
    Wang, Shaobin
    Date
    2010
    Type
    Journal Article
    
    Metadata
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    Citation
    Ibrahim, S. and Shuy, W. and Ang, M. and Wang, S. 2010. Preparation of bioadsorbents for effective adsorption of a reactive dye in aqueous solution. Asia-Pacific Journal of Chemical Engineering. 5 (4): pp. 563-569.
    Source Title
    Asia-Pacific Journal of Chemical Engineering
    DOI
    10.1002/apj.446
    ISSN
    1932-2135
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/24661
    Collection
    • Curtin Research Publications
    Abstract

    The surface of barley straw, an agricultural waste, was modified chemically using a cationic surfactant hexadecylpyridinium chloride monohydrate (CPC) and used as an adsorbent for removal of Reactive Blue 4 (RB4) from aqueous solution. The raw and surfactant-modified barley straws (SMBS) were characterized by Fourier transform infrared and elemental analysis. The stability of CPC adsorbed on straw surface was evaluated by exposing to water and organic solvents. The adsorption was performed on removing RB4 from wastewater in a batch adsorption system. The effects of contact time, initial concentration of dye and pH of solution on RB4 uptake were investigated and discussed. It was found that the removal percentage of RB4 increased with the increase in contact time. Adsorption was favorable at acidic condition and the maximum removal of 100% was obtained at pH 3. Dye-loaded SMBS was stable and percentage of desorption was less than 7% in water. The kinetic studies revealed that the kinetic data fitted well to the pseudo-second-order model. The isotherm study also indicated that RB4 adsorption on SMBS matched well with the Langmuir model other than the Freundlich model. The maximum adsorption capacity determined from the Langmuir isotherm was 29.2 mg g−1 at 25 °C.

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