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Journal of Radioanalytical and Nuclear Chemistry

, Volume 322, Issue 2, pp 801–808 | Cite as

Through-diffusion study of Se(IV) in γ-irradiated bentonite and bentonite–magnetite

  • Zhifen WangEmail author
  • Tao WuEmail author
  • Peng Ren
  • Rong Hua
  • Hao Wu
  • Minhong Xu
  • Yanhua Tong
Article
  • 21 Downloads

Abstract

Through-diffusion experiments with HSeO3 and SeO32− (as a surrogate of 79Se(IV)) in bentonite samples have been performed. The effect of density, magnetite and irradiation on the experimental results have been investigated. It could be shown that the effect diffusion coefficient decreased with the increasing density. In the γ-radiation bentonite and bentonite–magnetite, the diffusion coefficient for SeO32− and HSeO3 were (0.45–4.11) × 10−11 m2/s and (0.95–3.74) × 10−11 m2/s, respectively. While the Kd values were (1.19–4.00) × 10−4 m3/kg and (1.83–4.86) × 10−4 m3/kg, respectively. Moreover, the relationship of De and εacc could be described by Archie’s law. This study reveals that the magnetite has large influence on the diffusion, while the effect of γ radiation on the bentonite is similar.

Keywords

Se(IV) Diffusion γ-Irradiated Bentonite Magnetite 

Notes

Acknowledgements

This work was supported by Zhejiang Provincial National Science Foundation of China (Y15B070018) and the National Natural Science Foundation of China (Grant No. 21207035); Jiangxi Education Department Science and Technology Research Project (GJJ170478); JIANGXI (NRE1313); National Defense Basic Scientific Research Projects (JCKY2017401C005); Development Fund of Key Laboratory of Mass Spectrometry Science and Instruments in Jiangxi Province (JXMS2017014).

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.Nuclear Science and EngineeringEast China University of TechnologyNanchangPeople’s Republic of China
  2. 2.Department of EngineeringHuzhou UniversityHuzhouPeople’s Republic of China

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