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Use of unmodified orange peel for the adsorption of Cd(II), Pb(II) and Hg(II) ions in aqueous solutions

Received: 29 November 2014     Accepted: 9 December 2014     Published: 4 July 2015
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Abstract

Ground orange peel (GOP) was used as adsorbent for Cd(II), Pb(II) and Hg(II) ions in aqueous solutions. Several experiments with variation of some factors namely: initial concentration of the heavy metal ions, contact time, temperature and pH were carried out. FT-IR spectrum of GOP showed the presence of different functional groups on its surface. Equilibrium data were analysed by Langmuir, Freundlich, and Temkin isotherms. Hg (II) and Cd (II) adsorptions were better described by Temkin isotherm while that of Pub (II) was best described Freundlich isotherm. Pseudo second order kinetics with higher R2 values described adsorption in all cases. Adsorption of Hg (II) was maximum at pH 4, while those of Cd (II) and Pub (II) ions were maximum at pH 6. Thermodynamics study showed that the adsorption processes of Pb(II) and Hg(II) ions were endothermic while that of Cd(II) ions was exothermic in nature.

Published in American Journal of Physical Chemistry (Volume 4, Issue 3)
DOI 10.11648/j.ajpc.20150403.11
Page(s) 21-29
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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), 2015. Published by Science Publishing Group

Keywords

Orange Peels Adsorbent, Adsorption Isotherms, Kinetics, Thermodynamics, pH

References
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[3] Azhar, S.S., Liew, A.G., Suhardy, D., and Hafiz, K.F.(2005).Dye removal from aqueous solution by adsorption on treated sugarcane bagasse. American Journal of Applied Science, 2:1499-1501.
[4] Nigan, P., Armour, G., Banat, I.M., and Merchant,R.(2000).Physical removal of textile dyes from Effluents and solid waste fermentation of dye-adsorbed agricultural residue. Bioresource Technology 72:219.
[5] Tarum, K.H.(2009).Heavy Metal Adsorption onto Agro-based waste materials. Journal of Hazardous Materials 9(3):220-229.
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[16] Ho, Y.S., Mckay, G., Wase, D. A. J., Foster, C.F.,(1998) Study of the sorption of divalent metal ions on to peat, Ads. Sci. Technol., 18: 639–650.
[17] Igwe, J. C., Abia, A. A., (2007) Equilibrium sorption isotherm studies of Cd(II), Pb(II) and Zn(II) ions detoxification from waste water using unmodified and and EDTA-modified maize husk. Electron J. Biotechnol., 10:536–548
[18] Langmuir, I., (1918) The adsorption of gases on plane surfaces of glass,mica and platinum. Journal of the American Chemical Society, 40:1361–1403.
[19] Magdya, Y.H.,Daifullah, A.A.M.(1998). Adsorption of a basic dye from aqueous solutions onto sugar-industry-mud intwo modes of operations. Waste Management, 18(4):219-227.
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Cite This Article
  • APA Style

    Egwuatu Chinyelu, Umedum Ngozi, Ochiagha Kate, Ogbugo Sixtus. (2015). Use of unmodified orange peel for the adsorption of Cd(II), Pb(II) and Hg(II) ions in aqueous solutions. American Journal of Physical Chemistry, 4(3), 21-29. https://doi.org/10.11648/j.ajpc.20150403.11

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    ACS Style

    Egwuatu Chinyelu; Umedum Ngozi; Ochiagha Kate; Ogbugo Sixtus. Use of unmodified orange peel for the adsorption of Cd(II), Pb(II) and Hg(II) ions in aqueous solutions. Am. J. Phys. Chem. 2015, 4(3), 21-29. doi: 10.11648/j.ajpc.20150403.11

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    AMA Style

    Egwuatu Chinyelu, Umedum Ngozi, Ochiagha Kate, Ogbugo Sixtus. Use of unmodified orange peel for the adsorption of Cd(II), Pb(II) and Hg(II) ions in aqueous solutions. Am J Phys Chem. 2015;4(3):21-29. doi: 10.11648/j.ajpc.20150403.11

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  • @article{10.11648/j.ajpc.20150403.11,
      author = {Egwuatu Chinyelu and Umedum Ngozi and Ochiagha Kate and Ogbugo Sixtus},
      title = {Use of unmodified orange peel for the adsorption of Cd(II), Pb(II) and Hg(II) ions in aqueous solutions},
      journal = {American Journal of Physical Chemistry},
      volume = {4},
      number = {3},
      pages = {21-29},
      doi = {10.11648/j.ajpc.20150403.11},
      url = {https://doi.org/10.11648/j.ajpc.20150403.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpc.20150403.11},
      abstract = {Ground orange peel (GOP) was used as adsorbent for Cd(II), Pb(II) and Hg(II) ions in aqueous solutions. Several experiments with variation of some factors namely: initial concentration of the heavy metal ions, contact time, temperature and pH were carried out. FT-IR spectrum of GOP showed the presence of different functional groups on its surface.  Equilibrium data were analysed by Langmuir, Freundlich, and Temkin isotherms. Hg (II) and Cd (II) adsorptions were better described by Temkin isotherm while that of Pub (II) was best described Freundlich isotherm. Pseudo second order kinetics with higher R2 values described adsorption in all cases. Adsorption of Hg (II) was maximum at pH 4, while those of Cd (II) and Pub (II) ions were maximum at pH 6. Thermodynamics study showed that the adsorption processes of Pb(II) and Hg(II) ions were  endothermic while that of Cd(II) ions was exothermic in nature.},
     year = {2015}
    }
    

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  • TY  - JOUR
    T1  - Use of unmodified orange peel for the adsorption of Cd(II), Pb(II) and Hg(II) ions in aqueous solutions
    AU  - Egwuatu Chinyelu
    AU  - Umedum Ngozi
    AU  - Ochiagha Kate
    AU  - Ogbugo Sixtus
    Y1  - 2015/07/04
    PY  - 2015
    N1  - https://doi.org/10.11648/j.ajpc.20150403.11
    DO  - 10.11648/j.ajpc.20150403.11
    T2  - American Journal of Physical Chemistry
    JF  - American Journal of Physical Chemistry
    JO  - American Journal of Physical Chemistry
    SP  - 21
    EP  - 29
    PB  - Science Publishing Group
    SN  - 2327-2449
    UR  - https://doi.org/10.11648/j.ajpc.20150403.11
    AB  - Ground orange peel (GOP) was used as adsorbent for Cd(II), Pb(II) and Hg(II) ions in aqueous solutions. Several experiments with variation of some factors namely: initial concentration of the heavy metal ions, contact time, temperature and pH were carried out. FT-IR spectrum of GOP showed the presence of different functional groups on its surface.  Equilibrium data were analysed by Langmuir, Freundlich, and Temkin isotherms. Hg (II) and Cd (II) adsorptions were better described by Temkin isotherm while that of Pub (II) was best described Freundlich isotherm. Pseudo second order kinetics with higher R2 values described adsorption in all cases. Adsorption of Hg (II) was maximum at pH 4, while those of Cd (II) and Pub (II) ions were maximum at pH 6. Thermodynamics study showed that the adsorption processes of Pb(II) and Hg(II) ions were  endothermic while that of Cd(II) ions was exothermic in nature.
    VL  - 4
    IS  - 3
    ER  - 

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Author Information
  • Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, P. M. B. 5025 Awka, Anambra State, South Eastern Nigeria

  • Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, P. M. B. 5025 Awka, Anambra State, South Eastern Nigeria

  • Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, P. M. B. 5025 Awka, Anambra State, South Eastern Nigeria

  • Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, P. M. B. 5025 Awka, Anambra State, South Eastern Nigeria

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