Distribution coefficient determination of cobalt on alluvium soil of Anarak Nuclear Repository

Document Type : Original Article

Authors

1 Iran radioactive waste company, Atomic energy organization, Tehran, Iran

2 Radiation Application Research School, Nuclear science and technology Research Institute, Tehran, Iran

3 Nuclear fuel cycle Research School, Nuclear science and technology Research Institute, Tehran, Iran

Abstract

The safety assessment of Anarak site as the only center for the disposal of radioactive waste is of particular importance in order to maintain human health and the environment. Distribution coefficients of radioactive materials in the soils of the area under study is one of the influential parameters in the safety assessment calculations. Therefore, in this study, the distribution coefficient of cobalt in the alluvial soil of Anarak waste was determined by the batch method and two parameters of concentration and soil to solution ratio were studied. Linear adsorption isotherms, Friendlich and Langmuir were also analyzed to determine the adsorption behavior of cobalt in Anarak soil. The average value of cobalt distribution coefficient in the mentioned soil was calculated equal to 247.18 mL / g. The adsorption behavior of cobalt in Anarak soil followed the Langmuir adsorption isotherm with a positive and significant correlation. The maximum amount of cobalt uptake was determined as 0.029 mg / g soil. The results of the distribution coefficient obtained in this study are lower than the most of the values ​​presented in the other previous researches, which can be related to the soil texture (sandy loam) and the other soil characteristics.
 

Keywords

References

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