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Absorption Study of the Tc(IV) on Rocks and Minerals Under Simulated Geological Conditions

Published online by Cambridge University Press:  15 February 2011

Takayuki Amaya ,
Wataru Kobayashi  and
Kazunori Suzuki
Takayuki Amaya
Affiliation:
JGC Corporation, Oaraimachi, Ibaraki-Pref., 311–13Japan
Wataru Kobayashi
Affiliation:
JGC Corporation, Oaraimachi, Ibaraki-Pref., 311–13Japan
Kazunori Suzuki
Affiliation:
JGC Corporation, Oaraimachi, Ibaraki-Pref., 311–13Japan
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Abstract

The absorption of the technetium on rocks and minerals have been studied by using freshly quarried rocks to provide reducing conditions, without the addition of reductive reagents. The initial 99Tc concentration in this study was about 1x10-8 mol/1 (0.62 Bq/ml). Technetium was not absorbed on tuff or granite under oxidizing conditions, but higher Kd values of Tc were obtained for granite under reducing conditions. The Tc absorbed on granite was not desorbed under reducing condition. This indicates the absorption reaction is irreversible.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 1005
Copyright
Copyright © Materials Research Society 1995

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References

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