Jump to ContentJump to Main Navigation
Show Summary Details
More options …

Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Ed. by Qaim, Syed M.

12 Issues per year

IMPACT FACTOR 2016: 1.271
5-year IMPACT FACTOR: 1.286

CiteScore 2016: 1.20

SCImago Journal Rank (SJR) 2016: 0.486
Source Normalized Impact per Paper (SNIP) 2016: 0.761

See all formats and pricing
More options …
Volume 94, Issue 9-11 (Nov 2006)


Reduction of plutonium(VI) in brine under subsurface conditions

Donald T. Reed / J. F. Lucchini / S. B. Aase / A. J. Kropf
Published Online: 2009-09-25 | DOI: https://doi.org/10.1524/ract.2006.94.9-11.591

The redox stability of PuO22+ was investigated in brine under subsurface conditions. In simulated brines, when no reducing agent was present, 0.1 mM concentrations of plutonium(VI) were stable as regards to reduction for over two years, which was the duration of the experiments performed. In these systems, the plutonyl existed as a carbonate or hydroxy-chloride species. The introduction of reducing agents (e.g. steel coupons, and aqueous Fe2+) typically present in a subsurface repository, however, led to the destabilization of the plutonium(VI) complexes and the subsequent reduction to Pu(IV) under most conditions investigated. X-ray Absorption Near-Edge Spectroscopy (XANES) confirmed that the final oxidation state in these systems was Pu(IV). This reduction lowered the overall steady state concentration of plutonium in the brine by 3−4 orders of magnitude. These results show the importance of considering repository constituents in evaluating subsurface actinide solubility/mobility and provide further evidence of the effectiveness of reduced iron species in the reduction and immobilization of higher-valent plutonium species.

Keywords: Plutonium; WIPP; XANES; Iron Reduction; Brine Chemistry

About the article

Received: 2005-09-23

Accepted: 2006-03-26

Published Online: 2009-09-25

Published in Print: 2006-11-01

Citation Information: Radiochimica Acta, ISSN (Online) 2193-3405, ISSN (Print) 0033-8230, DOI: https://doi.org/10.1524/ract.2006.94.9-11.591.

Export Citation

© Oldenbourg Wissenschaftsverlag. Copyright Clearance Center

Citing Articles

Here you can find all Crossref-listed publications in which this article is cited. If you would like to receive automatic email messages as soon as this article is cited in other publications, simply activate the “Citation Alert” on the top of this page.

Wei-Qun Shi, Li-Yong Yuan, Cong-Zhi Wang, Lin Wang, Lei Mei, Cheng-Liang Xiao, Li Zhang, Zi-Jie Li, Yu-Liang Zhao, and Zhi-Fang Chai
Advanced Materials, 2014, Volume 26, Number 46, Page 7807
Xavier Gaona, David Fellhauer, and Marcus Altmaier
Pure and Applied Chemistry, 2013, Volume 85, Number 11
Marcus Altmaier, Xavier Gaona, and Thomas Fanghänel
Chemical Reviews, 2013, Volume 113, Number 2, Page 901
Clemens Walther and Melissa A. Denecke
Chemical Reviews, 2013, Volume 113, Number 2, Page 995
Elizabeth Thomas, Lucas Sweet, Paul MacFarlan, Bruce McNamara, and Harrison Kerschner
Health Physics, 2012, Volume 103, Page S136
S.E. Pepper, M. Borkowski, M.K. Richmann, and D.T. Reed
Analytica Chimica Acta, 2010, Volume 663, Number 2, Page 172
Randhir P. Deo and Bruce E. Rittmann
Biodegradation, 2012, Volume 23, Number 4, Page 525
Jean-Francois Lucchini, Marian Borkowski, Michael K. Richmann, Sally Ballard, and Donald T. Reed
Journal of Alloys and Compounds, 2007, Volume 444-445, Page 506
Donald T. Reed, Sarah E. Pepper, Michael K. Richmann, Geof Smith, Randhir Deo, and Bruce E. Rittmann
Journal of Alloys and Compounds, 2007, Volume 444-445, Page 376
Randhir P. Deo, Bruce E. Rittmann, and Donald T. Reed
Biodegradation, 2011, Volume 22, Number 5, Page 921
David S. Urch
Annual Reports Section "A" (Inorganic Chemistry), 2007, Volume 103, Page 470

Comments (0)

Please log in or register to comment.
Log in