Porewater chemistry in claystones in the context of radioactive waste disposal

Wersin, Paul; Traber, D; Mäder, Urs; Mazurek, Martin; Waber, Niklaus; Rufer, Daniel; Gimmi, Thomas; Cloet, V (2017). Porewater chemistry in claystones in the context of radioactive waste disposal. Procedia earth and planetary science, 17, pp. 718-721. Elsevier 10.1016/j.proeps.2016.12.182

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The development of a combined experimental-modelling approach has enabled to constrain the porewater chemistry of different low-permeability clay formations (Boom Clay, Callovo-Oxfordian Fm., Opalinus Clay) foreseen as host rocks for nuclear waste repositories. A variety of methods are available to directly sample porewater or to derive information on the solute concentrations. These include analysis from seepage waters in boreholes, aqueous extractions, high-pressure squeezing, and advective displacement from core samples. Geochemical equilibrium modelling is used for data integration and calculation of internally consistent reference water compositions. The paper provides an overview of current achievements in experimental developments, modelling approaches and open questions.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geological Sciences

UniBE Contributor:

Wersin, Paul; Mäder, Urs; Mazurek, Martin; Waber, Niklaus; Rufer, Daniel and Gimmi, Thomas

Subjects:

500 Science > 550 Earth sciences & geology

ISSN:

1878-5220

Publisher:

Elsevier

Language:

English

Submitter:

Thomas Gimmi

Date Deposited:

19 May 2017 08:35

Last Modified:

19 May 2017 08:35

Publisher DOI:

10.1016/j.proeps.2016.12.182

BORIS DOI:

10.7892/boris.97396

URI:

https://boris.unibe.ch/id/eprint/97396

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