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Inorganic ion-exchangers in radioactive waste management</p> </p>

Part XVI: Uptake of some metal phosphates (stannic and zirconium) for 134Cs</p> </p>
  • Shuddhodan P. Mishra
  • Diwakar Tiwari
  • Shailesh Kumar Prasad
  • R. S. Dubey
  • Manisha Mishra
Article

Summary

The uptake of indigenously synthesized amorphous stannic and zirconium phosphate was assessed for, one of the important fission fragment, cesium from aqueous solutions using a radiotracer technique. A virtual increase in sorptive concentration (from 1.0 . 10-8 to 1.0 . 10-2 mol . dm-3) and pH (from 2.4 to 10.2) and temperature (from 303 to 333 K) enhanced the uptake of cesium on stannic phosphate. However, the extremely high degree of uptake of cesium on zirconium phosphate was almost unaffected with the dilution beyond 10-5 mol . dm-3 and pH (i.e., from 2.4 to 10.2) and temperature (from 303 to 323 K). Irreversible uptake occurring for these solids follow the Freundlich adsorption isotherm and the presence of several complexing agents viz., sulphate, phosphate, glycine and EDTA did not affect appreciably the uptake of cesium on zirconium phosphate but it did affect for stannic phosphate system. Both these solids showed good radiation stability towards a 11.1 GBq Ra-Be neutron source having neutron flux ca. 3.2 . 106 n . cm-2 . s-1 and associated with a nominalg-dose of ca. 1.72 Gy/h, at least for the uptake of cesium.</p> </p>

Keywords

Cesium Waste Management Neutron Flux Radioactive Waste Neutron Source 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag/Akadémiai Kiadó 2006

Authors and Affiliations

  • Shuddhodan P. Mishra
    • 1
  • Diwakar Tiwari
    • 2
  • Shailesh Kumar Prasad
    • 3
  • R. S. Dubey
    • 4
  • Manisha Mishra
    • 5
  1. 1.Department of Chemistry, Banaras Hindu University
  2. 2.Department of Chemistry, National Institute of Technology
  3. 3.Department of Chemistry, National Institute of Technology
  4. 4.Department of Biochemistry, Banaras Hindu University
  5. 5.Department of Biochemistry, Banaras Hindu University

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