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Diffusion-controlled tracer retention in crystalline rock on the field scale
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering, Water Resources Engineering.
2010 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 37, L13401- p.Article in journal (Refereed) Published
Abstract [en]

Tracer retention is a key process for the barrier function of crystalline rock to any contaminant. Here we investigate the nature of retention mechanisms and their field-scale parametrization using results of a comprehensive tracer transport experiment in crystalline rock on the field scale (Aspo Hard Rock Laboratory, Sweden). A method for identifying dominant retention mechanisms and inferring key parameters on the site scale is presented. Taking advantage of multiple tracer tests with a wide range of sorption affinities, retention is shown to be diffusion-controlled. For the considered site, robust features of tracer migration can be reasonably well predicted within a rock volume on at least 200 m scale, by combining independent information with a simple model.

Place, publisher, year, edition, pages
2010. Vol. 37, L13401- p.
Keyword [en]
MATRIX DIFFUSION, TRANSPORT, FRACTURE, GRANITE
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:kth:diva-29492DOI: 10.1029/2010GL043445ISI: 000279823500001Scopus ID: 2-s2.0-77954663376OAI: oai:DiVA.org:kth-29492DiVA: diva2:394650
Note
QC 20110203Available from: 2011-02-03 Created: 2011-02-02 Last updated: 2017-12-11Bibliographically approved

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