Removal of (137)Cs from aqueous solutions using different cationic forms of a natural zeolite: clinoptilolite

Date

2002-08-01

Author

Abusafa, A
Yücel, Hayrettin

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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/dm(3) and at temperatures of 25, 40, 60 and 80 degreesC. 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.

Subject Keywords

Clinoptilolite, Cesium, Sorption isotherm, Dubinin-radushkevich isotherm

URI

https://hdl.handle.net/11511/63215

Journal

SEPARATION AND PURIFICATION TECHNOLOGY

DOI

https://doi.org/10.1016/s1383-5866(02)00042-4

Collections

Department of Chemical Engineering, Article

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Citation Formats

A. Abusafa and H. Yücel, “Removal of (137)Cs from aqueous solutions using different cationic forms of a natural zeolite: clinoptilolite,” SEPARATION AND PURIFICATION TECHNOLOGY, pp. 103–116, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/63215.