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Adsorption Studies of Silica Adsorbent Using Rice Husk as a Base Material for Metal Ions Removal from Aqueous Solution

Received: 18 March 2020     Accepted: 8 April 2020     Published: 28 April 2020
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Abstract

This study was carried out to evaluate the efficiency of metal ions removal from aqueous solution using silica adsorbent. Silica was extracted from rice husk using sol-gel method. The silica was modified with 1.0 M of nitric acid. Using batch adsorption technique, the effects of temperature, pH, contact time and adsorbent dosage on adsorption process of Cu (II), Zn (II), Mn (II) and Pb (II) ions were studied using standard solutions of their salts. Percentage removal of the metals ions studied decreased as the temperature was varied between 28°C and 43°C. Percentage removal of metal ions studied showed an increase at different pH varying from 4 to 8 and decreased after the pH 8. The variation of contact time between 2 and 8 hours showed a sharp increase in metals removal from 2 to 6 hours but a slow increase after 6 hours. The percentage removal of metal ions increase as the adsorbent dosage increased between 0.5 g and 2.0 g. The maximum percentage removal of metal ions was found to be 99.48%. The general observed trend of efficiency being Cu>Pb>Zn>Mn. The experimental data was also tested using adsorption isotherm models of Langmuir and Freundlich and Langmuir model was found to be the best fit for the data.

Published in American Journal of Chemical Engineering (Volume 8, Issue 2)
DOI 10.11648/j.ajche.20200802.12
Page(s) 48-53
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), 2020. Published by Science Publishing Group

Keywords

Adsorption, Silica, Adsorbent, Rice Husk and Aqueous Solution

References
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Cite This Article
  • APA Style

    Rose Erdoo Kukwa, Donald Tyoker Kukwa, Ahola David Oklo, Terungwa Thaddeus Ligom, Benjamin Ishwah, et al. (2020). Adsorption Studies of Silica Adsorbent Using Rice Husk as a Base Material for Metal Ions Removal from Aqueous Solution. American Journal of Chemical Engineering, 8(2), 48-53. https://doi.org/10.11648/j.ajche.20200802.12

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    ACS Style

    Rose Erdoo Kukwa; Donald Tyoker Kukwa; Ahola David Oklo; Terungwa Thaddeus Ligom; Benjamin Ishwah, et al. Adsorption Studies of Silica Adsorbent Using Rice Husk as a Base Material for Metal Ions Removal from Aqueous Solution. Am. J. Chem. Eng. 2020, 8(2), 48-53. doi: 10.11648/j.ajche.20200802.12

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    AMA Style

    Rose Erdoo Kukwa, Donald Tyoker Kukwa, Ahola David Oklo, Terungwa Thaddeus Ligom, Benjamin Ishwah, et al. Adsorption Studies of Silica Adsorbent Using Rice Husk as a Base Material for Metal Ions Removal from Aqueous Solution. Am J Chem Eng. 2020;8(2):48-53. doi: 10.11648/j.ajche.20200802.12

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  • @article{10.11648/j.ajche.20200802.12,
      author = {Rose Erdoo Kukwa and Donald Tyoker Kukwa and Ahola David Oklo and Terungwa Thaddeus Ligom and Benjamin Ishwah and John Ajegi Omenka},
      title = {Adsorption Studies of Silica Adsorbent Using Rice Husk as a Base Material for Metal Ions Removal from Aqueous Solution},
      journal = {American Journal of Chemical Engineering},
      volume = {8},
      number = {2},
      pages = {48-53},
      doi = {10.11648/j.ajche.20200802.12},
      url = {https://doi.org/10.11648/j.ajche.20200802.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajche.20200802.12},
      abstract = {This study was carried out to evaluate the efficiency of metal ions removal from aqueous solution using silica adsorbent. Silica was extracted from rice husk using sol-gel method. The silica was modified with 1.0 M of nitric acid. Using batch adsorption technique, the effects of temperature, pH, contact time and adsorbent dosage on adsorption process of Cu (II), Zn (II), Mn (II) and Pb (II) ions were studied using standard solutions of their salts. Percentage removal of the metals ions studied decreased as the temperature was varied between 28°C and 43°C. Percentage removal of metal ions studied showed an increase at different pH varying from 4 to 8 and decreased after the pH 8. The variation of contact time between 2 and 8 hours showed a sharp increase in metals removal from 2 to 6 hours but a slow increase after 6 hours. The percentage removal of metal ions increase as the adsorbent dosage increased between 0.5 g and 2.0 g. The maximum percentage removal of metal ions was found to be 99.48%. The general observed trend of efficiency being Cu>Pb>Zn>Mn. The experimental data was also tested using adsorption isotherm models of Langmuir and Freundlich and Langmuir model was found to be the best fit for the data.},
     year = {2020}
    }
    

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  • TY  - JOUR
    T1  - Adsorption Studies of Silica Adsorbent Using Rice Husk as a Base Material for Metal Ions Removal from Aqueous Solution
    AU  - Rose Erdoo Kukwa
    AU  - Donald Tyoker Kukwa
    AU  - Ahola David Oklo
    AU  - Terungwa Thaddeus Ligom
    AU  - Benjamin Ishwah
    AU  - John Ajegi Omenka
    Y1  - 2020/04/28
    PY  - 2020
    N1  - https://doi.org/10.11648/j.ajche.20200802.12
    DO  - 10.11648/j.ajche.20200802.12
    T2  - American Journal of Chemical Engineering
    JF  - American Journal of Chemical Engineering
    JO  - American Journal of Chemical Engineering
    SP  - 48
    EP  - 53
    PB  - Science Publishing Group
    SN  - 2330-8613
    UR  - https://doi.org/10.11648/j.ajche.20200802.12
    AB  - This study was carried out to evaluate the efficiency of metal ions removal from aqueous solution using silica adsorbent. Silica was extracted from rice husk using sol-gel method. The silica was modified with 1.0 M of nitric acid. Using batch adsorption technique, the effects of temperature, pH, contact time and adsorbent dosage on adsorption process of Cu (II), Zn (II), Mn (II) and Pb (II) ions were studied using standard solutions of their salts. Percentage removal of the metals ions studied decreased as the temperature was varied between 28°C and 43°C. Percentage removal of metal ions studied showed an increase at different pH varying from 4 to 8 and decreased after the pH 8. The variation of contact time between 2 and 8 hours showed a sharp increase in metals removal from 2 to 6 hours but a slow increase after 6 hours. The percentage removal of metal ions increase as the adsorbent dosage increased between 0.5 g and 2.0 g. The maximum percentage removal of metal ions was found to be 99.48%. The general observed trend of efficiency being Cu>Pb>Zn>Mn. The experimental data was also tested using adsorption isotherm models of Langmuir and Freundlich and Langmuir model was found to be the best fit for the data.
    VL  - 8
    IS  - 2
    ER  - 

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Author Information
  • Department of Chemistry, Faculty of Science, Benue State University, Makurdi, Nigeria

  • Department of Engineering and the Built Environment, Durban University of Technology, Durban, South Africa

  • Department of Chemistry, Faculty of Science, Benue State University, Makurdi, Nigeria

  • Department of Chemistry, Faculty of Science, Benue State University, Makurdi, Nigeria

  • Department of Chemistry, Faculty of Science, Benue State University, Makurdi, Nigeria

  • College of Education Oju, Oju, Benue State, Nigeria

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