Volume 3, Issue 6, December 2014, Page: 68-74
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
Nadiye-Tabbiruka M. S., University of Botswana, Faculty of Science, Department of Chemistry, Private Bag 00704, Gaborone, Botswana
Unaye Masiya, University of Botswana, Faculty of Science, Department of Chemistry, Private Bag 00704, Gaborone, Botswana
Salamula, E. J., Department of Chemistry, Makerere University, P.O.Box7062, Kampala, Uganda
Obuseng V., University of Botswana, Faculty of Science, Department of Chemistry, Private Bag 00704, Gaborone, Botswana
Ngila J. C., Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Doornfonten 2028, Cornerbeit and Nind Street John Orr Building
Received: Nov. 25, 2014;       Accepted: Dec. 4, 2014;       Published: Dec. 18, 2014
DOI: 10.11648/j.am.20140306.12      View  2590      Downloads  125
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.
Keywords
Adsorption, Coal, Activated Carbon, Surface Area, Pore Size Distribution
To cite this article
Nadiye-Tabbiruka M. S., Unaye Masiya, Salamula, E. J., Obuseng V., Ngila J. C., 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. Vol. 3, No. 6, 2014, pp. 68-74. doi: 10.11648/j.am.20140306.12
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