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Neptunium(V) Incorporation/Sorption with Uranium(VI) Alteration Products

Published online by Cambridge University Press:  17 March 2011

J. I. Friese ,
M. Douglas ,
E. C. Buck ,
S. B. Clark  and
B. D. Hanson
J. I. Friese
Affiliation:
Radiological Processing Laboratory, Pacific Northwest National Laboratory, Richland WA, 99352 Author email: judah.friese@pnl.gov
M. Douglas
Affiliation:
Department of Chemistry, Washington State University, Pullman WA, 99164
E. C. Buck
Affiliation:
Radiological Processing Laboratory, Pacific Northwest National Laboratory, Richland WA, 99352
S. B. Clark
Affiliation:
Department of Chemistry, Washington State University, Pullman WA, 99164
B. D. Hanson
Affiliation:
Radiological Processing Laboratory, Pacific Northwest National Laboratory, Richland WA, 99352
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Abstract

An initial uranium phase that has been observed to form during the corrosion of spent nuclear fuel is the uranium oxy-hydroxide metaschoepite. It has been proposed that neptunium(V) solubility can be limited by its association with this uranium phase. Metaschoepite has been synthesized in the presence of neptunium(V) over the pH range modeled in the proposed Yucca Mountain geologic repository. Uranium (VI) phases were synthesized by varying pH and neptunium concentrations. Results of neptunium association with the uranium alteration phases are presented and the relationship to dissolved neptunium concentrations discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 824: Symposium CC – Scientific Basis for Nuclear Waste Management XXVIII , 2004 , CC9.2
Copyright
Copyright © Materials Research Society 2004

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References

1. Chen, F., Burns, P. C., and Ewing, R. C., Journal of Nuclear Materials, 278, 225–232 (2000).Google Scholar
2. Chen, F., Burns, P. C., and Ewing, R. C., Journal of Nuclear Materials, 275, 81–94 (1999).Google Scholar
3. Burns, P. C., Ewing, R. C., and Miller, M. L., Journal of Nuclear Materials, 245 1–9 (1997).Google Scholar
4. Chen, Y. Computers & Geosciences, 29, 385–397 (2003).Google Scholar
5.OCRWMS M&O. The dissolved concentration limits of radioactive elements. ANL-WIS-MD-000010 REV 2, Las Vegas, Nevada (2003).Google Scholar
6. Runde, W., Conradson, S. D.. Efrud, D. W., Lu, N., VanPelt, C. E., and Tait, C. D., Applied Geochemistry 17 837–853 (2002).Google Scholar
7.CRWMS M&O. Commercial Spent Nuclear Fuel Degradation in Unsaturated Drip tests. WP-WP-99432.T. Las Vegas, NV (2000).Google Scholar
8. Wilson, C. N.. “Results from Cycles 1 and 2 of NNWSI Series 2 Spent Fuel Dissolution Tests”, HEDL-TME 85-22, Richland WA (1987).Google Scholar
9. Wilson, C. N., “Results from NNWSI Series 3 Spent Fuel Dissolution Tests”, PNL-7170, Richland WA (1990).Google Scholar
10. Friese, J. I., Buck, E. C., McNamara, B. K., Hanson, B. D., and Marschman, S.C., “Existing Evidence for the Fate of Neptunium in the Yucca Mountain Repository.” PNNL-14307 (2003).Google Scholar
11. Buck, E. C., Finch, R. J., Finn, P. A., and Bates, J. K., Materials Research Society Symposium Proceedings, 506, 87–94 (1998).Google Scholar
12. Buck, E. C., McNamara, B. K., Douglas, M., and Hanson, B. D., “Possible incorporation of neptunium in uranyl (VI) alteration phases.” PNNL-14277 (2003).Google Scholar
13. Fortner, J. A., Kropf, J. A., Finch, R. J., Mertz, C. J., Jerden, J. L., Goldberg, M. M., and Cunnane, J. C., “X-ray absorption spectroscopy of trace elements in spent nuclear fuel.” ANS/ENS International Winter Meeting, November 16-20, New Orleans, Louisiana (2003).Google Scholar
14. Douglas, M., Clark, S. B., Utsunomiya, S., and Ewing, R. C., Journal of Nuclear Science and Technology, Supplement 3, 504–507 (2002).Google Scholar
15. Finch, R. J., Buck, E. C., Finn, P. A., and Bates, J. K., Materials Research Society Symposium Proceedings, 556, 431–438 (1999).Google Scholar
16. Budnitz, B., Ewing, R. C., Moeller, D. W., Payer, J., Whipple, C., and Witherspoon, P. A., Peer review of the total system performance assessment-viability assessment final report. Las Vegas, Nevada: Total System Performance Assessment Peer Review Panel (1999).Google Scholar
17. McNamara, B. K., Buck, E. C., and Hanson, B. D., Scientific Basis for Nuclear Waste Management XXVI, Materials Research Society Meeting, Boston, MA (2002).Google Scholar
18. Burns, P. C. and Finch, R. J., “Uranium: mineralogy, geochemistry and the environment”, Washington, DC: Mineralogical Society of America (1999).Google Scholar
19. Douglas, M., (personal communication) (2003).Google Scholar