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    In-situ preparation of NaA zeolite/chitosan porous hybrid beads for removal of ammonium from aqueous solution

    Access Status
    Fulltext not available
    Authors
    Yang, K.
    Zhang, X.
    Chao, C.
    Zhang, B.
    Liu, Jian
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Yang, K. and Zhang, X. and Chao, C. and Zhang, B. and Liu, J. 2014. In-situ preparation of NaA zeolite/chitosan porous hybrid beads for removal of ammonium from aqueous solution. Carbohydrate Polymers. 107 (1): pp. 103-109.
    Source Title
    Carbohydrate Polymers
    DOI
    10.1016/j.carbpol.2014.02.001
    ISSN
    0144-8617
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/71901
    Collection
    • Curtin Research Publications
    Abstract

    Inorganic/organic hybrid materials play important roles in removal of contaminants from wastewater. Herein, we used the natural materials of halloysite and chitosan to prepare a new adsorbent of NaA zeolite/chitosan porous hybrid beads by in-situ hydrothermal synthesis method. SEM indicated that the porous hybrid beads were composed of 6-8 µm sized cubic NaA zeolite particles congregated together with chitosan. The adsorption behavior of NH4+from aqueous solution onto hybrid beads was investigated at different conditions. The Langmuir and Freundlich adsorption models were applied to describe the equilibrium isotherms. A maximum adsorption capacity of 47.62 mg/g at 298 K was achieved according to Langmuir model. The regenerated or reused experiments indicated that the adsorption capacity of the hybrid beads could maintain in 90% above after 10 successive adsorption-desorption cycles. The high adsorption and reusable ability implied potential application of the hybrid beads for removing NH4+pollutants from wastewater. © 2014 Elsevier Ltd.

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