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Radionuclide Transport in a Water - Saturated Planar Fracture with Bentonite Extrusion

Published online by Cambridge University Press:  01 February 2011

R. A. Borrelli  and
J. Ahn
R. A. Borrelli
Affiliation:
borrelli@berkeley.edu, University of California - Berkeley, Nuclear Engineering, 4155 Etcheverry Hall, MC 1730, Berkeley, CA, 94720, United States, 510.682.4555, 510.643.9685
J. Ahn
Affiliation:
joonhong.ahn@berkeley.edu, University of California - Berkeley, Nuclear Engineering, 4155 Etcheverry Hall, MC 1730, Berkeley, CA, 94720, United States
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Abstract

This paper presents a radionuclide migration model that incorporates bentonite extrusion. The model consists of two parts: one for movement of water and bentonite in a planar fracture and the other for radionuclide transport by taking into account advection, diffusion, and sorption with moving bentonite particles. Numerical results indicate that strongly sorbing radionuclides are contained completely within the region of bentonite extrusion. This observation suggests importance of the region in the vicinity of buffer/rock interface in terms of impact on radionuclide release to surrounding host rock.

Keywords

actinideenvironmentally protectiveporosity
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1006: Symposium R – Transport Behavior in Heterogeneous Polymeric Materials and Composites , 2007 , 1006-R07-03
Copyright
Copyright © Materials Research Society 2007

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References

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