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Diffusion of 99Tc in granite: A small scale laboratory simulation experiment
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C. L. Liu
Published/Copyright:
September 25, 2009
The diffusion of 99Tc in granite was investigated with small-sized diffusion cells, composed of a radioactive source solution cell and a sampling cell. Water in the two cells was kept at the same level. 1 ml aliquots were taken from the sampling cells daily during the first 50 days, then at intervals of several days, and measured via liquid scintillation counting. The experimental results indicate that the diffusion of 99Tc and 3H in granite follows the one-dimensional diffusion equation when diffusion time is long enough (>100 days). The calculated average diffusion coefficient of 99Tc (1.4×10-12 m2/s) is about one half of that of 3H (3.2×10-12 m2/s).
Published Online: 2009-9-25
Published in Print: 2001-10-1
© 2015 Oldenbourg Wissenschaftsverlag GmbH, Rosenheimer Str. 145, 81671 München
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Articles in the same Issue
- Sequential separation of americium, curium, plutonium, neptunium and uranium in various matrices from the electrometallurgic treatment of spent-nuclear fuel
- Supercritical fluid extraction of plutonium and americium from soil using thenoyltrifluoroacetone and tributylphosphate complexation
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- Migration of 99Tc in unsaturated Chinese loess under artificial rainfall condition: an in situ test
- Separation and speciation of fission products by zirconium phosphate prepared by solid-solid reaction
- Interaction study between Ca2+ and humic acids in brine media
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