Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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
Micro- and macroscopic ion diffusion controlled by clay micro-structure
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-6851-4839
Ascend Technologies Ltd, Southampton, UK.
2019 (English)In: Journal of Earth Sciences and Geotechnical Engineering, ISSN 1792-9040, E-ISSN 1792-9660, Vol. 9, no 3, p. 99-114Article in journal (Refereed) Published
Abstract [en]

Very dense smectite clay surrounding canisters with high-level radioactive waste effectively stops migration of radionuclides due to flowing porewater, however, does not stop their movement by diffusion. The paper explains how the diffusion rate of released waste ions depends on the microstructural constitution referring to the mechanisms in diffusive transport and the sorption by the clay matrix of varying density. In general, diffusion refers to the transport of elements by action of random motions and works to eliminate distinct discontinuities in concentration. For smectite clay this process is complex since interlamellar diffusion is a 2-dimensional process on the microscale and takes place in diffuse electrical double-layers on the basal planes of the clay crystallites. This is in contrast with pore diffusion which is a 3-dimensional process. By making use of microstructural parameters one can distinguish the different contributions to bulk diffusion migration and create a basis for theoretical modelling of diffusive ion migration.  

Place, publisher, year, edition, pages
UK: Scientific Press International Limited , 2019. Vol. 9, no 3, p. 99-114
Keywords [en]
Smectite clay, canisters, diffusion, montmorillonite, ion migration, clay microstructure
National Category
Engineering and Technology Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-75707OAI: oai:DiVA.org:ltu-75707DiVA, id: diva2:1346215
Note

Validerad;2019;Nivå 1;2019-09-02 (johcin)

Available from: 2019-08-27 Created: 2019-08-27 Last updated: 2019-09-02Bibliographically approved

Open Access in DiVA

fulltext(1224 kB)6 downloads
File information
File name FULLTEXT01.pdfFile size 1224 kBChecksum SHA-512
b54cea3c4e21c8884ca1c70cee9b53e8dda77ad31176ad7c572b01dacd11b0b0b42f21ad3acee9e18c23839674b48372d12e2e3a3c20dadbc47cb601e0eca9fc
Type fulltextMimetype application/pdf

Other links

https://www.scienpress.com/journal_focus.asp?main_id=59&Sub_id=IV&Issue=1233935

Search in DiVA

By author/editor
Pusch, Roland
By organisation
Mining and Geotechnical Engineering
In the same journal
Journal of Earth Sciences and Geotechnical Engineering
Engineering and TechnologyGeotechnical Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 6 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 15 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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