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|a E 1.99:1265483
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|a Dynamic interplay between uranyl phosphate precipitation, sorption, and phase evolution
|h [electronic resource]
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|a Washington, D.C. :
|b United States. Department of Energy. ;
|a Oak Ridge, Tenn. :
|b distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
|c 2015.
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|a p. 147-160 :
|b digital, PDF file.
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|a text
|b txt
|2 rdacontent.
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|a online resource
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|a Published through SciTech Connect.
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|a 04/17/2015.
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|a "KP1301010"
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|a "ERKP464"
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|a Applied Geochemistry 58 C ISSN 0883-2927 AM.
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|a P. Sumudu Munasinghe; Megan E. Elwood Madden; Scott C. Brooks; Andrew S. Elwood Madden.
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|a We report that natural examples demonstrate uranyl-phosphate minerals can maintain extremely low levels of aqueous uranium in groundwaters due to their low solubility. Thus, greater understanding of the geochemical factors leading to uranyl phosphate precipitation may lead to successful application of phosphate-based remediation methods. However, the solubility of uranyl phosphate phases varies over >3 orders of magnitude, with the most soluble phases typically observed in lab experiments. To understand the role of common soil/sediment mineral surfaces in the nucleation and transformation of uranyl phosphate minerals under environmentally relevant conditions, we carried out batch experiments with goethite and mica at pH 6 in mixed electrolyte solutions ranging from 1-800 μM U and 1-800 μM P. All experiments ended with uranium concentrations below the USEPA MCL for U, but with 2-3 orders of magnitude difference in uranium concentrations.
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|b AC05-00OR22725.
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|a Geosciences.
|2 edbsc.
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|a Environmental Sciences.
|2 edbsc.
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|a Oak Ridge National Laboratory.
|4 res.
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|a United States.
|b Department of Energy.
|4 spn.
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|a United States.
|b Department of Energy.
|b Office of Scientific and Technical Information.
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|u http://www.osti.gov/scitech/biblio/1265483
|z Online Access (via OSTI)
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|a .b88003036
|b 03-09-23
|c 09-08-16
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|b 05-20-19
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|a University of Colorado Boulder
|b Online
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|d Online
|e E 1.99:1265483
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