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Title: ALTERATION OF U(VI)-PHASES UNDER OXIDIZING CONDITIONS

Abstract

Uranium-(VI) phases are the primary alteration products of the UO{sub 2} in spent nuclear fuel and the UO{sub 2+x}, in natural uranium deposits. The U(VI)-phases generally form sheet structures of edge-sharing UO{sub 2}{sup 2+} polyhedra. The complexity of these structures offers numerous possibilities for coupled-substitutions of trace metals and radionuclides. The incorporation of radionuclides into U(VI)-structures provides a potential barrier to their release and transport in a geologic repository that experiences oxidizing conditions. In this study, we have used natural samples of UO{sub 2+x}, to study the U(VI)-phases that form during alteration and to determine the fate of the associated trace elements.

Authors:
; ;
Publication Date:
Research Org.:
Yucca Mountain Project, Las Vegas, Nevada
Sponsoring Org.:
USDOE
OSTI Identifier:
884959
Report Number(s):
NA
MOL.20060330.0282, DC#47102; TRN: US0603732
DOE Contract Number:
NA
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; ELEMENTS; NATURAL URANIUM; NUCLEAR FUELS; POTENTIALS; RADIOISOTOPES; TRACE AMOUNTS; TRANSPORT

Citation Formats

A.P. Deditius, S. Utsunomiya, and R.C. Ewing. ALTERATION OF U(VI)-PHASES UNDER OXIDIZING CONDITIONS. United States: N. p., 2006. Web. doi:10.2172/884959.
A.P. Deditius, S. Utsunomiya, & R.C. Ewing. ALTERATION OF U(VI)-PHASES UNDER OXIDIZING CONDITIONS. United States. doi:10.2172/884959.
A.P. Deditius, S. Utsunomiya, and R.C. Ewing. Tue . "ALTERATION OF U(VI)-PHASES UNDER OXIDIZING CONDITIONS". United States. doi:10.2172/884959. https://www.osti.gov/servlets/purl/884959.
@article{osti_884959,
title = {ALTERATION OF U(VI)-PHASES UNDER OXIDIZING CONDITIONS},
author = {A.P. Deditius and S. Utsunomiya and R.C. Ewing},
abstractNote = {Uranium-(VI) phases are the primary alteration products of the UO{sub 2} in spent nuclear fuel and the UO{sub 2+x}, in natural uranium deposits. The U(VI)-phases generally form sheet structures of edge-sharing UO{sub 2}{sup 2+} polyhedra. The complexity of these structures offers numerous possibilities for coupled-substitutions of trace metals and radionuclides. The incorporation of radionuclides into U(VI)-structures provides a potential barrier to their release and transport in a geologic repository that experiences oxidizing conditions. In this study, we have used natural samples of UO{sub 2+x}, to study the U(VI)-phases that form during alteration and to determine the fate of the associated trace elements.},
doi = {10.2172/884959},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 21 00:00:00 EST 2006},
month = {Tue Feb 21 00:00:00 EST 2006}
}

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