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Study of Pu sorption behavior in natural clay

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Abstract

Kinetics of Pu(V) sorption on clays was studied under conditions similar to those expected at the waste repository. Batch sorption, sequential extraction (SE), oxidation state analysis and modeling were applied to study sorption mechanisms of Pu. The composition of clay coatings and their transformation were investigated using the Mössbauer spectroscopy and X-ray diffraction. In spite of the Pu(V) fast reduction its bonding to the clay was found to be different as compared to the experiments with Pu(IV). The largest portion of Pu was associated with exchangeable and carbonate fractions indicating its possible higher mobility in the environment.

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Authors and Affiliations

  1. SRI Center for Physical Sciences and Technology, Savanorių ave 231, Vilnius, LT-02300, Lithuania

    G. Lujanienė, V. Pakštas, R. Juškėnas, I. Kulakauskaitė, S. Šemčuk & K. Mažeika

  2. Department of Nuclear Chemistry, CTU in Prague, Prague 1, Brehova 7, Prague, Czech Republic

    K. Štamberg & D. Vopálka

Authors
  1. G. Lujanienė
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  2. K. Štamberg
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  3. V. Pakštas
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  4. R. Juškėnas
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  5. I. Kulakauskaitė
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  6. S. Šemčuk
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  7. K. Mažeika
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  8. D. Vopálka
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Correspondence to G. Lujanienė.

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This paper is dedicated to the memory of Prof. Peter Beneš.

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Lujanienė, G., Štamberg, K., Pakštas, V. et al. Study of Pu sorption behavior in natural clay. J Radioanal Nucl Chem 304, 53–59 (2015). https://doi.org/10.1007/s10967-014-3585-0

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  • DOI: https://doi.org/10.1007/s10967-014-3585-0

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