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Effects of Aging on the Solubility of Palladium

Published online by Cambridge University Press:  15 February 2011

C. Oda ,
H. Yoshikawa  and
M. Yui
C. Oda
Affiliation:
Power Reactor and Nuclear Fuel Development Corporation, Tokai, Ibaraki pref., Japan.
H. Yoshikawa
Affiliation:
Power Reactor and Nuclear Fuel Development Corporation, Tokai, Ibaraki pref., Japan.
M. Yui
Affiliation:
Power Reactor and Nuclear Fuel Development Corporation, Tokai, Ibaraki pref., Japan.
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Abstract

Palladium solubility was measured in a dilute aqueous solution at room temperature in the pH range from 3 to 13 under anaerobic conditions. Crystalline Pd metal was clearly visible and the concentration of palladium in solution decreased gradually with aging time. The palladium concentrations in solution were less than 9.4×10-10M in the pH range from 4 to 10 and increased to 10-7M in the pH range greater than 10. This study suggests that palladium concentrations in certain high-level waste repository environments may be limited by Pd metal and may be less than 10-9M.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 412: Symposium V – Scientific Basis for Nuclear Waste Management XIX , 1995 , 881
Copyright
Copyright © Materials Research Society 1996

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