Advances in Materials

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Characterazation of Unmodified and Chemically Modified Coal Samples by Nitrogen Adsorption at 77k, and Investigation of their Interaction with Sulphur Dioxide, (SO2), a Known Pollutant

Received: 25 November 2014    Accepted: 04 December 2014    Published: 18 December 2014
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Abstract

Samples of modified and fresh coal from Morupule, in Botswana, were characterized by nitrogen adsorption at 77 K and found to be micro porous materials, with the modified sample having a higher specific surface area (SBET = 282.0 m2/g) which is 19 times that of the original sample. Modification by activation increased the average pore radius slightly. Interaction of the coals with sulphur dioxide, a known pollutant, was investigated through its adsorption at various temperatures to facilitate the determination of isosteric heats of adsorption. The values obtained indicated physical adsorption of the pollutant indicating the possible reuse over and over again to trap and remove the pollutant in gaseous phase. Results from elemental analyser show that Morupule coal contains 68.8%±5.0% carbon.

DOI 10.11648/j.am.20140306.12
Published in Advances in Materials (Volume 3, Issue 6, December 2014)
Page(s) 68-74
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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), 2024. Published by Science Publishing Group

Keywords

Adsorption, Coal, Activated Carbon, Surface Area, Pore Size Distribution

References
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Author Information
  • University of Botswana, Faculty of Science, Department of Chemistry, Private Bag 00704, Gaborone, Botswana

  • University of Botswana, Faculty of Science, Department of Chemistry, Private Bag 00704, Gaborone, Botswana

  • University of Botswana, Faculty of Science, Department of Chemistry, Private Bag 00704, Gaborone, Botswana

  • Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Doornfonten 2028, Cornerbeit and Nind Street John Orr Building

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    Nadiye-Tabbiruka M. S., Unaye Masiya, Salamula, E. J., Obuseng V., et al. (2014). Characterazation of Unmodified and Chemically Modified Coal Samples by Nitrogen Adsorption at 77k, and Investigation of their Interaction with Sulphur Dioxide, (SO2), a Known Pollutant. Advances in Materials, 3(6), 68-74. https://doi.org/10.11648/j.am.20140306.12

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    Nadiye-Tabbiruka M. S.; Unaye Masiya; Salamula; E. J.; Obuseng V., et al. Characterazation of Unmodified and Chemically Modified Coal Samples by Nitrogen Adsorption at 77k, and Investigation of their Interaction with Sulphur Dioxide, (SO2), a Known Pollutant. Adv. Mater. 2014, 3(6), 68-74. doi: 10.11648/j.am.20140306.12

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    AMA Style

    Nadiye-Tabbiruka M. S., Unaye Masiya, Salamula, E. J., Obuseng V., et al. Characterazation of Unmodified and Chemically Modified Coal Samples by Nitrogen Adsorption at 77k, and Investigation of their Interaction with Sulphur Dioxide, (SO2), a Known Pollutant. Adv Mater. 2014;3(6):68-74. doi: 10.11648/j.am.20140306.12

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  • @article{10.11648/j.am.20140306.12,
      author = {Nadiye-Tabbiruka M. S. and Unaye Masiya and Salamula and E. J. and Obuseng V. and Ngila J. C.},
      title = {Characterazation of Unmodified and Chemically Modified Coal Samples by Nitrogen Adsorption at 77k, and Investigation of their Interaction with Sulphur Dioxide, (SO2), a Known Pollutant},
      journal = {Advances in Materials},
      volume = {3},
      number = {6},
      pages = {68-74},
      doi = {10.11648/j.am.20140306.12},
      url = {https://doi.org/10.11648/j.am.20140306.12},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.am.20140306.12},
      abstract = {Samples of modified and fresh coal from Morupule, in Botswana, were characterized by nitrogen adsorption at 77 K and found to be micro porous materials, with the modified sample having a higher specific surface area (SBET = 282.0 m2/g) which is 19 times that of the original sample. Modification by activation increased the average pore radius slightly. Interaction of the coals with sulphur dioxide, a known pollutant, was investigated through its adsorption at various temperatures to facilitate the determination of isosteric heats of adsorption. The values obtained indicated physical adsorption of the pollutant indicating the possible reuse over and over again to trap and remove the pollutant in gaseous phase. Results from elemental analyser show that Morupule coal contains 68.8%±5.0% carbon.},
     year = {2014}
    }
    

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    AU  - Nadiye-Tabbiruka M. S.
    AU  - Unaye Masiya
    AU  - Salamula
    AU  - E. J.
    AU  - Obuseng V.
    AU  - Ngila J. C.
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    JF  - Advances in Materials
    JO  - Advances in Materials
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    SN  - 2327-252X
    UR  - https://doi.org/10.11648/j.am.20140306.12
    AB  - Samples of modified and fresh coal from Morupule, in Botswana, were characterized by nitrogen adsorption at 77 K and found to be micro porous materials, with the modified sample having a higher specific surface area (SBET = 282.0 m2/g) which is 19 times that of the original sample. Modification by activation increased the average pore radius slightly. Interaction of the coals with sulphur dioxide, a known pollutant, was investigated through its adsorption at various temperatures to facilitate the determination of isosteric heats of adsorption. The values obtained indicated physical adsorption of the pollutant indicating the possible reuse over and over again to trap and remove the pollutant in gaseous phase. Results from elemental analyser show that Morupule coal contains 68.8%±5.0% carbon.
    VL  - 3
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