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Coupled transport/reaction modelling of copper canister corrosion aided by microbial processes
KTH, Superseded Departments, Chemical Engineering and Technology.
KTH, Superseded Departments, Chemical Engineering and Technology.
2004 (English)In: Radiochimica Acta, ISSN 0033-8230, Vol. 92, no 11-sep, 849-854 p.Article in journal (Refereed) Published
Abstract [en]

Copper canister corrosion is an important issue in the concept of a nuclear fuel repository. Previous studies indicate that the oxygen-free copper canister could hold its integrity for more than 100 000 years in the repository environment. Microbial processes may reduce sulphate to sulphide and considerably increase the amount of sulphide available for corrosion. In this paper. a coupled transport/reaction model is developed to account for the transport of chemical species produced by microbial processes. The corroding agents like sulphide would come not only from the intruding groundwater, but also from the reduction of sulphate near the canister. The reaction of sulphate-reducing bacteria and the transport of sulphide in the bentonite buffer is included in the model. The local depth of copper canister corrosion is calculated by the model.

Place, publisher, year, edition, pages
2004. Vol. 92, no 11-sep, 849-854 p.
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-23966DOI: 10.1524/ract.92.9.849.54994ISI: 000225831400046ScopusID: 2-s2.0-10344267021OAI: diva2:342665
QC 20100525 QC 20111018Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2011-10-31Bibliographically approved

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