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Solubility and Colloid Generation of Plutonium from Leaching of a HLW Glass in Salt Solutions

Published online by Cambridge University Press:  26 February 2011

J. I. Kim ,
W. Treiber ,
Ch. Lierse  and
P. Offermann
J. I. Kim
Affiliation:
Institut für Radiochemie, TU München, 8046 Garching, FRG
W. Treiber
Affiliation:
Institut für Radiochemie, TU München, 8046 Garching, FRG
Ch. Lierse
Affiliation:
Institut für Radiochemie, TU München, 8046 Garching, FRG
P. Offermann
Affiliation:
Hahn-Meitner Institut für Kernforschung, 1000 Berlin, FRG
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Abstract

Solubilities of Pu from leaching of a simulated HLW glass (C31–3-EC) spiked with 5 wt % Pu and from PuO2 are determined in salt solutions of different NaCl concentration and in groundwaters which are representative for the Gorleben area. Th.e leaching experiment is carried out either in an autoclave at 200 °C or under normal conditions (1 atm, 25°C). Solubilities of Pu in all investigated solutions are observed to be considerably higher than the values known from theoretical estimates. The predominant Pu species in solutions are found to be microcolloids, which are characterized by means of ultrafiltration and pulsed laser-induced photoacoustic spectroscopy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 44: Symposium N – Scientific Basis for Nuclear Waste Management VIII , 1984 , 359
Copyright
Copyright © Materials Research Society 1985

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