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Adaptation of Modified Shrinking Core Model for the Description of Salicylic Acid Adsorption on Olive Stones Activated Carbons

Received: 8 April 2017     Accepted: 27 April 2017     Published: 18 October 2017
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Abstract

This work aimed to apply a modified shrinking core model (SCM) for describing the kinetic adsorption process of a solute in a microporous activated carbon in an agitated finite batch aqueous system. To apply the SCM, the diffusion-adsorption process in the pore of the adsorbent is transposed to a diagram of diffusion-reaction according to a mobile front. Indeed, solid adsorbent particle is assumed formed by two layers. The first layer is an inner core, not yet reached by the adsorbate, and the second layer is an outer shell, where diffusion and binding to particle sites are occurring. In this study, two mass transfer resistances are considered; the external liquid film resistance and intraparticle resistance. The developed modified SCM, applied to experimental data for the adsorption of salicylic acid onto olive stone activated carbons and a commercial one, give a more realistic prediction and shows a good accuracy in describing batch adsorption in mixed suspension. The kinetic parameters: the effective diffusivity and the mass transfer coefficient were determined. Using the estimated parameters, a parametric study was carried out to observe the effects of the particle size of adsorbent, the initial adsorbate concentration and the stirring velocity on the system kinetics.

Published in Advances in Bioscience and Bioengineering (Volume 5, Issue 3)
DOI 10.11648/j.abb.20170503.12
Page(s) 42-50
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Shrinking Core Model, Mass Transfer Coefficient, Effective Diffusivity, Salicylic Acid, Olive Stones, Activated Carbon, Kinetic, Adsorption

References
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[4] Frascari D., Bacca A. E. M., Zama F., Bertin L., Fava F., Pinelli D (2016) Olive mill wastewater valorisation through phenolic compounds adsorption in a continuous flow column. Chem Eng J 283:293–303.
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[6] Jena P. R., Basu J. K., De S (2004) A generalized shrinking core model for multicomponent batch adsorption processes. Chem. Eng. J. 102:267–275
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[8] Bohli T., Ouederni A, Fiol N., Villaescusa I (2015) Evaluation of an activated carbon from olive stones used as an adsorbent for heavy metal removal from aqueous phases. C R Chimie 18:88–99.
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[17] Pritzker M. D (2003) Model for parallel surface and pore diffusion of an adsorbate in a spherical adsorbent particle, Chem. Eng. Sc. 58 473 – 478.
[18] Jena P. R., De S., Basu J. K(2003) A generalized shrinking core model applied to batch adsorption, Chem. Eng. J. 95 143–154.
[19] Jena P. R., Basu J. K., De S (2004)A generalized shrinking core model for multicomponent batch adsorption processes, Chem. Eng. J. 102 267–275.
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  • APA Style

    Thouraya Bohli, Ghofrane Hamdi, Souaad Suissi Najjar, Abdelmottaleb Ouederni. (2017). Adaptation of Modified Shrinking Core Model for the Description of Salicylic Acid Adsorption on Olive Stones Activated Carbons. Advances in Bioscience and Bioengineering, 5(3), 42-50. https://doi.org/10.11648/j.abb.20170503.12

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    ACS Style

    Thouraya Bohli; Ghofrane Hamdi; Souaad Suissi Najjar; Abdelmottaleb Ouederni. Adaptation of Modified Shrinking Core Model for the Description of Salicylic Acid Adsorption on Olive Stones Activated Carbons. Adv. BioSci. Bioeng. 2017, 5(3), 42-50. doi: 10.11648/j.abb.20170503.12

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    AMA Style

    Thouraya Bohli, Ghofrane Hamdi, Souaad Suissi Najjar, Abdelmottaleb Ouederni. Adaptation of Modified Shrinking Core Model for the Description of Salicylic Acid Adsorption on Olive Stones Activated Carbons. Adv BioSci Bioeng. 2017;5(3):42-50. doi: 10.11648/j.abb.20170503.12

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  • @article{10.11648/j.abb.20170503.12,
      author = {Thouraya Bohli and Ghofrane Hamdi and Souaad Suissi Najjar and Abdelmottaleb Ouederni},
      title = {Adaptation of Modified Shrinking Core Model for the Description of Salicylic Acid Adsorption on Olive Stones Activated Carbons},
      journal = {Advances in Bioscience and Bioengineering},
      volume = {5},
      number = {3},
      pages = {42-50},
      doi = {10.11648/j.abb.20170503.12},
      url = {https://doi.org/10.11648/j.abb.20170503.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.abb.20170503.12},
      abstract = {This work aimed to apply a modified shrinking core model (SCM) for describing the kinetic adsorption process of a solute in a microporous activated carbon in an agitated finite batch aqueous system. To apply the SCM, the diffusion-adsorption process in the pore of the adsorbent is transposed to a diagram of diffusion-reaction according to a mobile front. Indeed, solid adsorbent particle is assumed formed by two layers. The first layer is an inner core, not yet reached by the adsorbate, and the second layer is an outer shell, where diffusion and binding to particle sites are occurring. In this study, two mass transfer resistances are considered; the external liquid film resistance and intraparticle resistance. The developed modified SCM, applied to experimental data for the adsorption of salicylic acid onto olive stone activated carbons and a commercial one, give a more realistic prediction and shows a good accuracy in describing batch adsorption in mixed suspension. The kinetic parameters: the effective diffusivity and the mass transfer coefficient were determined. Using the estimated parameters, a parametric study was carried out to observe the effects of the particle size of adsorbent, the initial adsorbate concentration and the stirring velocity on the system kinetics.},
     year = {2017}
    }
    

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  • TY  - JOUR
    T1  - Adaptation of Modified Shrinking Core Model for the Description of Salicylic Acid Adsorption on Olive Stones Activated Carbons
    AU  - Thouraya Bohli
    AU  - Ghofrane Hamdi
    AU  - Souaad Suissi Najjar
    AU  - Abdelmottaleb Ouederni
    Y1  - 2017/10/18
    PY  - 2017
    N1  - https://doi.org/10.11648/j.abb.20170503.12
    DO  - 10.11648/j.abb.20170503.12
    T2  - Advances in Bioscience and Bioengineering
    JF  - Advances in Bioscience and Bioengineering
    JO  - Advances in Bioscience and Bioengineering
    SP  - 42
    EP  - 50
    PB  - Science Publishing Group
    SN  - 2330-4162
    UR  - https://doi.org/10.11648/j.abb.20170503.12
    AB  - This work aimed to apply a modified shrinking core model (SCM) for describing the kinetic adsorption process of a solute in a microporous activated carbon in an agitated finite batch aqueous system. To apply the SCM, the diffusion-adsorption process in the pore of the adsorbent is transposed to a diagram of diffusion-reaction according to a mobile front. Indeed, solid adsorbent particle is assumed formed by two layers. The first layer is an inner core, not yet reached by the adsorbate, and the second layer is an outer shell, where diffusion and binding to particle sites are occurring. In this study, two mass transfer resistances are considered; the external liquid film resistance and intraparticle resistance. The developed modified SCM, applied to experimental data for the adsorption of salicylic acid onto olive stone activated carbons and a commercial one, give a more realistic prediction and shows a good accuracy in describing batch adsorption in mixed suspension. The kinetic parameters: the effective diffusivity and the mass transfer coefficient were determined. Using the estimated parameters, a parametric study was carried out to observe the effects of the particle size of adsorbent, the initial adsorbate concentration and the stirring velocity on the system kinetics.
    VL  - 5
    IS  - 3
    ER  - 

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Author Information
  • Chemical Engineering Department, National School of Engineers of Gabes, University of Gabes, Gabes, Tunisia

  • Chemical Engineering Department, National School of Engineers of Gabes, University of Gabes, Gabes, Tunisia

  • Chemical Engineering Department, National School of Engineers of Gabes, University of Gabes, Gabes, Tunisia

  • Chemical Engineering Department, National School of Engineers of Gabes, University of Gabes, Gabes, Tunisia

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