Concepedia

THE SEPARATION OF NEPTUNIUM AND TECHNETIUM IN AN ADVANCED PUREX PROCESS

Gunzo Uchiyama, Toshihide Asakura, Shinobu Hotoku, Sachio Fujine

Solvent Extraction and Ion Exchange · 1998 · 16 citations · 3 references

DOI

Concepts

Abstract

ABSTRACT An advanced PUREX process has been developed which can reduce TRU waste volume and the environmental hazard risk due to long-lived nuclides. The separation of neptunium and technetium from plutonium and uranium solutions has been studied before the U/ Pu partitioning step in the PUREX process. The effectiveness of normal-butyraldehyde as a reductant of Np( VI) to Np( V) and of high acid scrubbing of technetium was shown in a basic study and a chemical flowsheet study.

References

3

New Separation Process for Neptunium, Plutonium, and Uranium Using Butyraldehydes as Reductants in Reprocessing

Gunzo Uchiyama, Sachio Fujine, Shinobu Hotoku et al. · Nuclear Technology · 1993 · 49 citations

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EXTRACTION AND COEXTRACTION OF Tc(VII), Zr(IV), Np(IV.VI), Pa(V) AND Nb(V) WITH TRIBUTYL PHOSPHATE FROM NITRIC ACID SOLUTIONS

Z. Kolařík, P. Dressler · Solvent Extraction and Ion Exchange · 1989 · 37 citations

, , +10

Reduction of Neptunium(VI) by Butyraldehyde Isomers in Nitric Acid Solution

Gunzo Uchiyama, Shinobu Hotoku, Sachio Fujine et al. · Nuclear Technology · 1998 · 23 citations

, , +8