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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Editor-in-Chief: Qaim, Syed M.

12 Issues per year


IMPACT FACTOR 2017: 1.202

CiteScore 2017: 1.22

SCImago Journal Rank (SJR) 2017: 0.409
Source Normalized Impact per Paper (SNIP) 2017: 0.869

Online
ISSN
2193-3405
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Volume 103, Issue 3

Issues

Partitioning and speciation of Pu in the sedimentary rocks aquifer from the deep liquid nuclear waste disposal

Stepan N. Kalmykov
  • Corresponding author
  • Lomonosov Moscow State University, Department of Chemistry, 119991, Moscow, Russia
  • Frumkin Institute of Physical Chemistry and Electrochemistry of Russian Academy of Sciences, 119071, Moscow, Russia
  • Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences, 119991 Moscow, Russia
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  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Irina E. Vlasova / Anna Yu. Romanchuk / Elena V. Zakharova
  • Frumkin Institute of Physical Chemistry and Electrochemistry of Russian Academy of Sciences, 119071, Moscow, Russia
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Anna G. Volkova
  • Frumkin Institute of Physical Chemistry and Electrochemistry of Russian Academy of Sciences, 119071, Moscow, Russia
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  • De Gruyter OnlineGoogle Scholar
/ Igor A. Presnyakov
Published Online: 2014-12-18 | DOI: https://doi.org/10.1515/ract-2014-2344

Abstract

Plutonium partitioning and speciation was studied under the conditions of a liquid nuclear waste repository site. The dominating effect of corrosion products (Fe and Cr) oxides on plutonium partitioning was established in batch sorption tests at 150 ℃ and by using sequential extraction. Various techniques including Mössbauer spectrometry, XRD and TEM were used to characterize Fe/Cr oxide phases that form both precipitates and surface coatings which sorb plutonium. The sorption and speciation of plutonium was modeled thermodynamically using Pourbaix diagram that takes into account both surface complexation reaction and precipitation of insoluble PuO2.

Keywords: Plutonium; Sorption; Hematite; Goethite; Modeling; LNW disposal

About the article

Accepted: 2014-10-14

Received: 2014-04-28

Published Online: 2014-12-18

Published in Print: 2015-03-28


Citation Information: Radiochimica Acta, Volume 103, Issue 3, Pages 175–185, ISSN (Online) 2193-3405, ISSN (Print) 0033-8230, DOI: https://doi.org/10.1515/ract-2014-2344.

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Parveen K. Verma, Anna Yu. Romanchuk, Irina E. Vlasova, Victoria V. Krupskaya, Sergey V. Zakusin, Alexey V. Sobolev, Alexander V. Egorov, Prasanta K. Mohapatra, and Stepan N. Kalmykov
Applied Geochemistry, 2017, Volume 78, Page 74
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