Incorporation of Transuranic Elements in Titanate Nuclear Waste Ceramics

Hans‐joachim ‐j Matzke; Ian L.F. Ray; Brian W. Seatonberry; Hartmut Thiele; Claudio Trisoglio; Clive T. Walker; Timothy J. White

doi:10.1111/j.1151-2916.1990.tb06520.x

Incorporation of Transuranic Elements in Titanate Nuclear Waste Ceramics

Hans‐joachim ‐j Matzke, Ian L.F. Ray, Brian W. Seatonberry, Hartmut Thiele, Claudio Trisoglio, Clive T. Walker, Timothy J. White^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

The incorporation of actinide elements and their rare‐earth element analogues in titanate nuclear waste forms is reviewed. New partitioning data are presented for three waste forms containing Purex waste simulant in combination with either NpO₂, PuO₂, or Am₂O₃. The greater proportion of transuranics partition between perovskite and zirconolite, while some americium may enter loveringite. Autoradiography revealed clusters of plutonium atoms which have been interpreted as unreacted dioxide or sesquioxide. It is concluded that the solid‐state behavior of transuranic elements in titanate waste forms is poorly understood, certainly not well enough to tailor a ceramic for the incorporation of waste from reprocessing of fast breeder reactor fuel in which transuranic species are more abundant than in Purex waste.

Original language	English
Pages (from-to)	370-378
Number of pages	9
Journal	Journal of the American Ceramic Society
Volume	73
Issue number	2
DOIs	https://doi.org/10.1111/j.1151-2916.1990.tb06520.x
Publication status	Published - Feb 1990
Externally published	Yes

ASJC Scopus Subject Areas

Ceramics and Composites
Materials Chemistry

Keywords

actinide
formation
nuclear wastes
rare earths
titanates

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10.1111/j.1151-2916.1990.tb06520.x

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title = "Incorporation of Transuranic Elements in Titanate Nuclear Waste Ceramics",

abstract = "The incorporation of actinide elements and their rare‐earth element analogues in titanate nuclear waste forms is reviewed. New partitioning data are presented for three waste forms containing Purex waste simulant in combination with either NpO2, PuO2, or Am2O3. The greater proportion of transuranics partition between perovskite and zirconolite, while some americium may enter loveringite. Autoradiography revealed clusters of plutonium atoms which have been interpreted as unreacted dioxide or sesquioxide. It is concluded that the solid‐state behavior of transuranic elements in titanate waste forms is poorly understood, certainly not well enough to tailor a ceramic for the incorporation of waste from reprocessing of fast breeder reactor fuel in which transuranic species are more abundant than in Purex waste.",

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AU - Matzke, Hans‐joachim ‐j

AU - Ray, Ian L.F.

AU - Seatonberry, Brian W.

AU - Thiele, Hartmut

AU - Trisoglio, Claudio

AU - Walker, Clive T.

AU - White, Timothy J.

PY - 1990/2

Y1 - 1990/2

N2 - The incorporation of actinide elements and their rare‐earth element analogues in titanate nuclear waste forms is reviewed. New partitioning data are presented for three waste forms containing Purex waste simulant in combination with either NpO2, PuO2, or Am2O3. The greater proportion of transuranics partition between perovskite and zirconolite, while some americium may enter loveringite. Autoradiography revealed clusters of plutonium atoms which have been interpreted as unreacted dioxide or sesquioxide. It is concluded that the solid‐state behavior of transuranic elements in titanate waste forms is poorly understood, certainly not well enough to tailor a ceramic for the incorporation of waste from reprocessing of fast breeder reactor fuel in which transuranic species are more abundant than in Purex waste.

AB - The incorporation of actinide elements and their rare‐earth element analogues in titanate nuclear waste forms is reviewed. New partitioning data are presented for three waste forms containing Purex waste simulant in combination with either NpO2, PuO2, or Am2O3. The greater proportion of transuranics partition between perovskite and zirconolite, while some americium may enter loveringite. Autoradiography revealed clusters of plutonium atoms which have been interpreted as unreacted dioxide or sesquioxide. It is concluded that the solid‐state behavior of transuranic elements in titanate waste forms is poorly understood, certainly not well enough to tailor a ceramic for the incorporation of waste from reprocessing of fast breeder reactor fuel in which transuranic species are more abundant than in Purex waste.

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KW - formation

KW - nuclear wastes

KW - rare earths

KW - titanates

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Incorporation of Transuranic Elements in Titanate Nuclear Waste Ceramics

Abstract

ASJC Scopus Subject Areas

Keywords

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