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IRSN, Institut de radioprotection et de sûreté nucléaire

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Enhancing Nuclear Safety


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Evaluation of distribution coefficients for the prediction of strontium and cesium migration in a natural sand at different water contents.

S. Szenknect*, JP Gaudet, L. Dewière (* PhD student at l'IRSN)

12th International Conference on Heavy Metals in the Environment, 26/05-30/05, Grenoble France.

Document type > *Congrès/colloque

Keywords > caesium, sorption/desorption, strontium

Research Unit > IRSN/DEI/SARG/LETS

Authors > DEWIERE Lionel

Publication Date > 26/07/2003

Summary

Contaminant distribution coefficient determined under saturated conditions are often used to model solute transport in the vadose zone. However, the water content of porous media may affect the transport behaviour of conservative and sorbing solutes. We performed column experiments using sand from Chernobyl area and we investigated the transport of tritiated water as conservative tracer, 85Sr and 134Cs as reactive solutes at different water saturation levels. The results indicate that when the Kd model is applicable, a decrease of the water content leads to a decrease of the Kd value.

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