Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate
2010-01-20
2011-12-20
Barry, Chester (Department: 1778)
Liquid purification or separation
Processes
Ion exchange or selective sorption
C210S668000, C210S263000, C210S175000, C210S282000, C210S291000, C588S002000, C588S011000, C588S020000
Reexamination Certificate
active
08080162
ABSTRACT:
Provided is a method that can remove fission products in a spent electrolyte produced in a dry reprocessing process by an easy operation and can vitrify the fission products easily, the fission products including not only the fission products that generate precipitate but also the fission products that generate no precipitate. A spent electrolyte produced in a dry reprocessing process is subjected to a phosphate conversion processing to obtain a processing target substance; the processing target substance is passed through a separating material10including an iron phosphate glass at a temperature of not more than a softening point of the iron phosphate glass in order to remove insoluble fission products included in the processing target substance by filtration with the separating material and to sorb fission products in solution to the separating material for separation; and the iron phosphate glass holding the fission products is used as a waste vitrification material.
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Ippei Amamoto et al., “Fundamental Study on Electrolyte Recycle Process by Phosphate Conversion Technique, Recovery of Precipitates”, Nihon Genshiryoku Gakkai “2008-nen Haru-no-nenkai Youshishu D35” (2008 Annual Meeting, Spring, Collected Summaries: D35), p. 179, and English translation thereof.
Ippei Amamoto et al., “Fundamental Study on Electrolyte Recycle Process by Phosphate Conversion Technique, Evaluation of FP Precipitates Formation”, Nihon Genshiryoku Gakkai “2009-nen Haru-no-nenkai Youshishu C07” (2009 Annual Meeting (Spring), Collected Summaries: C07), and English translation thereof.
Amamoto Ippei
Fukushima Mineo
Kofuji Hirohide
Myochin Munetaka
Barry Chester
Japan Atomic Energy Agency
Wenderoth , Lind & Ponack, L.L.P.
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