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Effect of kinetic limitations on colloid-facilitated radionuclide transport at the field scale
KTH, School of Architecture and the Built Environment (ABE), Land and Water Resources Engineering (moved 20130630), Water Resources Engineering.
2006 (English)In: Proceedings of the 11th International High Level Radioactive Waste Management Conference, IHLRWM, 2006, 323-329 p.Conference paper, Published paper (Refereed)
Abstract [en]

Sorption onto natural groundwater colloids, a process that may enhance field-scale transport of radionuclides in the subsurface, is typically modeled in studies of potential high-level waste repositories using equilibrium partitioning assumptions. A new streamline-based model suggests that kinetic limitations on radionuclide sorption/desoption may significantly enhance field-scale radionuclide transport in some situations. Specifically, the leading edge of mass breakthrough curves may be enhanced if the kinetic rate constants are in a critical range as quantified by a Damkohler-type number. Application of the model to plutonium transport in the alluvial aquifer near Yucca Mountain, Nevada indicates that the bulk of the uncertain parameter space is in the equilibrium range. However, a small parameter region is in the kinetic regime. Monte Carlo simulations suggest that this kinetic region of the parameter space may cause early breakthrough for a small fraction of migrating plutonium, but the effect on peak breakthrough is minimal.

Place, publisher, year, edition, pages
2006. 323-329 p.
Series
Proceedings of the 11th International High Level Radioactive Waste Management Conference, IHLRWM, 2006
Keyword [en]
Damkohler-type number, Natural groundwater colloids, Radionuclide sorption, Groundwater, Monte Carlo methods, Plutonium, Radioactive waste disposal, Radioisotopes, Transport properties, Colloids
National Category
Water Treatment
Identifiers
URN: urn:nbn:se:kth:diva-155856Scopus ID: 2-s2.0-33847176273ISBN: 0894486918 (print)ISBN: 9780894486913 (print)OAI: oai:DiVA.org:kth-155856DiVA: diva2:764412
Conference
11th International High Level Radioactive Waste Management Conference, 30 April 2006 through 4 May 2006, Las Vegas, NV
Note

QC 20141118

Available from: 2014-11-19 Created: 2014-11-13 Last updated: 2014-11-19Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf