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Licensed Unlicensed Requires Authentication Published by De Gruyter November 30, 2016

Radionuclide removal by apatite

  • Mark J. Rigali EMAIL logo , Patrick V. Brady and Robert C. Moore
From the journal American Mineralogist

Abstract

A growing body of research supports widespread future reliance on apatite for radioactive waste cleanup. Apatite is a multi-functional radionuclide sorbent that lowers dissolved radionuclide concentrations by surface sorption, ion exchange, surface precipitation, and by providing phosphate to precipitate low-solubility radionuclide-containing minerals. Natural apatites are rich in trace elements, and apatite’s stability in the geologic record suggest that radionuclides incorporated into apatite, whether in a permeable reactive barrier or a waste form, are likely to remain isolated from the biosphere for long periods of time. Here we outline the mineralogic and surface origins of apatite-radionuclide reactivity and show how apatites might be used to environmental advantage in the future.


Special collection papers can be found online at http://www.minsocam.org/MSA/AmMin/special-collections.html.


Acknowledgments

Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000. This work is supported by DOE Office of Nuclear Energy, Office of Used Nuclear Fuel Disposition and DOE Office of Legacy Management.

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Received: 2016-3-15
Accepted: 2016-7-6
Published Online: 2016-11-30
Published in Print: 2016-12-1

© 2016 by Walter de Gruyter Berlin/Boston

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