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Kinetics and Thermodynamics of Some Heavy Metals Removal from Industrial Effluents Through Electro-Flotation Process

Received: 31 December 2016     Accepted: 18 January 2017     Published: 15 February 2017
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Abstract

The electrokinetic of chromium, copper, silver and gold ions removal from synthetic and wastewater via electro-flotation was investigated. Kinetics and thermodynamic parameters of the electro-flotation process were determined. The effect of initial pH and metal ion concentration, treatment time and temperature showed that the maximum removal was achieved at pH 6. The order of the metal ions removal is Cr3+ > Cu2+> Ag+ > Au+. The removal process follows pseudo first-order kinetics and the adsorption is a heterogeneous system characterized by physical adsorption which is exothermic. Negative values of entropy change ΔS° and Gibbs free energy change ΔG° indicate that this adsorption process is spontaneous and less favorable at high temperatures. The treatment of electroplating wastewater showed that the removal efficiency was ranging between 96 - 99%. The electrical energy consumption was 0.033 Kwh/L.

Published in Colloid and Surface Science (Volume 2, Issue 2)
DOI 10.11648/j.css.20170202.11
Page(s) 47-53
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

Electro-Flotation, Wastewater, Heavy Metals, Kinetics, Thermodynamics

References
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Cite This Article
  • APA Style

    K. A. Selim, F. I. El Hosiny, M. A. Abdel Khalek, I. Osama. (2017). Kinetics and Thermodynamics of Some Heavy Metals Removal from Industrial Effluents Through Electro-Flotation Process. Colloid and Surface Science, 2(2), 47-53. https://doi.org/10.11648/j.css.20170202.11

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    ACS Style

    K. A. Selim; F. I. El Hosiny; M. A. Abdel Khalek; I. Osama. Kinetics and Thermodynamics of Some Heavy Metals Removal from Industrial Effluents Through Electro-Flotation Process. Colloid Surf. Sci. 2017, 2(2), 47-53. doi: 10.11648/j.css.20170202.11

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    AMA Style

    K. A. Selim, F. I. El Hosiny, M. A. Abdel Khalek, I. Osama. Kinetics and Thermodynamics of Some Heavy Metals Removal from Industrial Effluents Through Electro-Flotation Process. Colloid Surf Sci. 2017;2(2):47-53. doi: 10.11648/j.css.20170202.11

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  • @article{10.11648/j.css.20170202.11,
      author = {K. A. Selim and F. I. El Hosiny and M. A. Abdel Khalek and I. Osama},
      title = {Kinetics and Thermodynamics of Some Heavy Metals Removal from Industrial Effluents Through Electro-Flotation Process},
      journal = {Colloid and Surface Science},
      volume = {2},
      number = {2},
      pages = {47-53},
      doi = {10.11648/j.css.20170202.11},
      url = {https://doi.org/10.11648/j.css.20170202.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.css.20170202.11},
      abstract = {The electrokinetic of chromium, copper, silver and gold ions removal from synthetic and wastewater via electro-flotation was investigated. Kinetics and thermodynamic parameters of the electro-flotation process were determined. The effect of initial pH and metal ion concentration, treatment time and temperature showed that the maximum removal was achieved at pH 6. The order of the metal ions removal is Cr3+ > Cu2+> Ag+ > Au+. The removal process follows pseudo first-order kinetics and the adsorption is a heterogeneous system characterized by physical adsorption which is exothermic. Negative values of entropy change ΔS° and Gibbs free energy change ΔG° indicate that this adsorption process is spontaneous and less favorable at high temperatures. The treatment of electroplating wastewater showed that the removal efficiency was ranging between 96 - 99%. The electrical energy consumption was 0.033 Kwh/L.},
     year = {2017}
    }
    

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    T1  - Kinetics and Thermodynamics of Some Heavy Metals Removal from Industrial Effluents Through Electro-Flotation Process
    AU  - K. A. Selim
    AU  - F. I. El Hosiny
    AU  - M. A. Abdel Khalek
    AU  - I. Osama
    Y1  - 2017/02/15
    PY  - 2017
    N1  - https://doi.org/10.11648/j.css.20170202.11
    DO  - 10.11648/j.css.20170202.11
    T2  - Colloid and Surface Science
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    JO  - Colloid and Surface Science
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    UR  - https://doi.org/10.11648/j.css.20170202.11
    AB  - The electrokinetic of chromium, copper, silver and gold ions removal from synthetic and wastewater via electro-flotation was investigated. Kinetics and thermodynamic parameters of the electro-flotation process were determined. The effect of initial pH and metal ion concentration, treatment time and temperature showed that the maximum removal was achieved at pH 6. The order of the metal ions removal is Cr3+ > Cu2+> Ag+ > Au+. The removal process follows pseudo first-order kinetics and the adsorption is a heterogeneous system characterized by physical adsorption which is exothermic. Negative values of entropy change ΔS° and Gibbs free energy change ΔG° indicate that this adsorption process is spontaneous and less favorable at high temperatures. The treatment of electroplating wastewater showed that the removal efficiency was ranging between 96 - 99%. The electrical energy consumption was 0.033 Kwh/L.
    VL  - 2
    IS  - 2
    ER  - 

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Author Information
  • Central Metallurgical Research & Development Institute (CMRDI), Cairo, Egyp

  • Faculty of Science, Ain Shams University, Cairo, Egypt

  • Central Metallurgical Research & Development Institute (CMRDI), Cairo, Egyp

  • Central Metallurgical Research & Development Institute (CMRDI), Cairo, Egyp

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