An-Najah National University

Chemical Engineering


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  • Sunday, March 10, 2002
  • Removal of Cs 137 from aqueous solutions using different cationic forms of a natural zeolite: clinoptilolite
  • Published at:Separation and Purification Technology 28 (2002) 103–116
  • Distribution coefficients of cesium on natural and cation-enriched (Na +  ,K + ,NH +4, and Ca+2 ) forms of clinoptilolite were measured by batch, radioactive tracer technique. The measurements were carried out for an initial cesium concentration range of 10-6-10-1  mol/ dm3 and at temperatures of 25, 40, 60 and 80 °C. Experimental isotherms evaluated from distribution coefficients were fit to Langmuir, Freundlich and Dubinin-Radushkevich (D-R)models. Of the models tested, D-R model was found to represent the isotherms better in a wider range of concentrations than either Langmuir or Freundlich model. Breakthrough behavior of cesium on natural and cation-enriched forms of clinoptilolite for a particular set of conditions were also determined in a small size column. Column parameters were evaluated using mass transfer zone concept

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Abdelrahim Abusafa
Chemical Engineering - Unit Operations
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