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      Radiochemical study of Co2+ sorption on chlorite and kaolinite

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      Author
      Shahwan, T.
      Erten, H. N.
      Date
      1999
      Source Title
      Journal of Radioanalytical and Nuclear Chemistry
      Print ISSN
      0236-5731
      Publisher
      Akademiai Kiado Rt.
      Volume
      241
      Issue
      1
      Pages
      151 - 155
      Language
      English
      Type
      Article
      Item Usage Stats
      141
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      Abstract
      In this work, the sorption behavior of Co(II) ions on natural chlorite and kaolinite as a function of time, concentration and temperature was studied. 60Co radiotracer method and the batch technique were used. The kinetic results indicated that about one day of contact time was enough to achieve equilibrium. The sorption process was described by Freundlich type isotherms. Sorption of Co(II) ions on both clays was found to be endothermic with ΔH(o) (kJ/mol) and ΔS(o) (kJ/mol·K) being 33 and 0.14 for kaolinite and 17 and 0.102 for chlorite, respectively. The magnitudes of the corresponding ΔG(o) values suggest that sorption occur mainly via an ion exchange mechanism on both clays.
      Keywords
      Aluminum silicate
      Cobalt
      Sodium chlorite
      Ion exchange
      Kinetics
      Mathematical analysis
      Radiochemistry
      Temperature
      Thermodynamics
      Time
      Permalink
      http://hdl.handle.net/11693/25221
      Published Version (Please cite this version)
      http://dx.doi.org/10.1007/BF02347303
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      • Department of Chemistry 594
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