Mechanisms of Uranium Interactions with Hydroxyapatite:  Implications for Groundwater Remediation

The speciation of U(VI) sorbed to synthetic hydroxyapatite was investigated using a combination of U LIII-edge XAS, synchrotron XRD, batch uptake measurements, and SEM-EDS. The mechanisms of U(VI) removal by apatite were determined in order to evaluate the feasibility of apatite-based in-situ permea...

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Bibliographic Details
Published in:Environmental science & technology 2002-01, Vol.36 (2), p.158-165
Main Authors: Fuller, C. C, Bargar, J. R, Davis, J. A, Piana, M. J
Format: Article
Language:English
Subjects:
Adsorption
Applied sciences
Biocompatible Materials - chemistry
Durapatite - chemistry
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Environmental Monitoring
Exact sciences and technology
Freshwater
Groundwater
Groundwaters
Hydroxyapatite
Natural water pollution
Pollution
Pollution, environment geology
Soil Pollutants, Radioactive - analysis
Uranium
Uranium - chemistry
Water Pollution - prevention & control
Water treatment and pollution
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Summary:The speciation of U(VI) sorbed to synthetic hydroxyapatite was investigated using a combination of U LIII-edge XAS, synchrotron XRD, batch uptake measurements, and SEM-EDS. The mechanisms of U(VI) removal by apatite were determined in order to evaluate the feasibility of apatite-based in-situ permeable reactive barriers (PRBs). In batch U(VI) uptake experiments with synthetic hydroxyapatite (HA), near complete removal of dissolved uranium (>99.5%) to
ISSN:0013-936X
1520-5851
DOI:10.1021/es0108483