Journal of Nuclear Science, Engineering and Technology (JONSAT)
In cooperation with the Iranian Nuclear Society

Application of Natural Vermiculite for Cesium Removal from Radioactive Aqueous Waste

Document Type : Research Paper

Authors

H Abolghasemi
M Rostamnejad
S Momenzade
N Hadadi
Abstract
The adsorption behavior of natural vermiculite for cesium (137Cs), in radioactive aqueous waste, has been investigated. Our experiments, aimed at the study of the effect of some parameters such as residential time (for batch equilibrium), pH, temperature, and flow rate (for column tests) on the efficiency of adsorption operation. The adsorption experiments were performed using both static batch equilibration and flow-through tests. The maximum adsorption was observed in alkaline condition (0.01 mol L-1 NaOH solution), using 1gr of adsorbent for 100ml of radioactive liquid waste at 60ºC, in 24h of residential time for a batch experiment. Finally, with the result of the column experiments, the breaktrough isotherm has been drawn. The present work deals with a series of experiments to assess the potential of vermiculite for the removal of radio cesium from radioactive aqueous waste. The results of these investigations are expected to be valuable, in order to reach at a higher degree of radioactive waste decontamination.

Highlights

  1. J. Vejsada, D. Hradil, “Adsorption of cesium on Czech smetit-rich clays,” Applied Clay Science. 30, 53-66 (2005).

     

  2. C.C.A. Sikalidies, “Caesium selectivity and fixation by vermiculite,” Environmental Pollution. 52, 67-69 (1988).

     

  3. Maria G.da Fonseca, michelle M.de Oliveria, “Natural vermiculite as an exchanger support for heavy cations in aqueous solution,” Colloid and Interface Science. 258, 50-55 (2005).

     

  4. M.C jimenze de haro, j.l. perez-rodriguez, “Effect of ultarasund on preparation of porous materials from vermiculite,” Appled Clay Science. 30, 11-20 (2005).

     

  5. B.L. Sawhney, “Cesium sorption in relation to lattice spacing,” Soil.Sci.Soc. 31, 181-3 (2005).

     

  6. Khalid, Sh. Ahmad, “Potentail of rice hunks for antimony removal,” Applied Radiation and Isotope. 52, 31-38 (2005).

     

  7. Shuddhodan P. Mishra, “Biosorptive behaviour of rice hulls for Cs-134 from aqueous solutions: A radiotracer study,” Applied Radiation and Isotope. 65, 280-286 (2007).

Keywords

Adsorption
Radio Cesium(137Cs)
Vermiculite
Radioactive Wastes

  1. J. Vejsada, D. Hradil, “Adsorption of cesium on Czech smetit-rich clays,” Applied Clay Science. 30, 53-66 (2005).

     

  2. C.C.A. Sikalidies, “Caesium selectivity and fixation by vermiculite,” Environmental Pollution. 52, 67-69 (1988).

     

  3. Maria G.da Fonseca, michelle M.de Oliveria, “Natural vermiculite as an exchanger support for heavy cations in aqueous solution,” Colloid and Interface Science. 258, 50-55 (2005).

     

  4. M.C jimenze de haro, j.l. perez-rodriguez, “Effect of ultarasund on preparation of porous materials from vermiculite,” Appled Clay Science. 30, 11-20 (2005).

     

  5. B.L. Sawhney, “Cesium sorption in relation to lattice spacing,” Soil.Sci.Soc. 31, 181-3 (2005).

     

  6. Khalid, Sh. Ahmad, “Potentail of rice hunks for antimony removal,” Applied Radiation and Isotope. 52, 31-38 (2005).

     

  7. Shuddhodan P. Mishra, “Biosorptive behaviour of rice hulls for Cs-134 from aqueous solutions: A radiotracer study,” Applied Radiation and Isotope. 65, 280-286 (2007).

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