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Photochemical Valence Adjustment of Pu and Np in Nitric Acid Solution for Separation and Co-Extraction

Published online by Cambridge University Press:  15 February 2011

Y. Wada ,
K. Morimoto ,
T. Goibuchi  and
H. Tomiyasu
Y. Wada
Affiliation:
Power Reactor and Nuclear Fuel Development Corp., 4-33, Muramatu, Tokai-Mura, Naka-Gun,Ibaraki Pref., 319-11, Japan
K. Morimoto
Affiliation:
Power Reactor and Nuclear Fuel Development Corp., 4-33, Muramatu, Tokai-Mura, Naka-Gun,Ibaraki Pref., 319-11, Japan
T. Goibuchi
Affiliation:
Power Reactor and Nuclear Fuel Development Corp., 4-33, Muramatu, Tokai-Mura, Naka-Gun,Ibaraki Pref., 319-11, Japan
H. Tomiyasu
Affiliation:
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1.0-okayama, Meguro-Ku, Tokyo, 152, Japan
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Abstract

Photochemical redox reaction tests were corried out where the experimental variables were irradiation rate using a Hg lamp light and molarity of nitric acid containing different reductant reagents such as hydroxylamine(HAN), hydrazine(HDZ) and urea. Based on these tests, we confirmed that the valences of Pu and Np were easily photochemically adjusted to two conditions of Pu(IV,VI)-Np(V) and Pu(IV,VI)-Np(VI), indicating that photochemical valence adjustment for the separation and co-extraction of Pu and Np has excellent potential as an advanced process technology.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 1347
Copyright
Copyright © Materials Research Society 1995

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References

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