Format:
XV, 141 Seiten
,
Illustrationen, Diagramme
Content:
Humankind and their environment need to be protected from the harmful effects of spent nuclear fuel, and therefore disposal in deep geological formations is favoured worldwide. Suitability of potential host rocks is evaluated, among others, by the retention capacity with respect to radionuclides. Safety assessments are based on the quantification of radionuclide migration lengths with numerical simulations as experiments cannot cover the required temporal (1 Ma) and spatial scales (〉100 m). Aim of the present thesis is to assess the migration of uranium, a geochemically complex radionuclide, in the potential host rock Opalinus Clay. Radionuclide migration in clay formations is governed by diffusion due to their low permeability and retarded by sorption. Both processes highly depend on pore water geochemistry and mineralogy that vary between different facies. Diffusion is quantified with the single-component (SC) approach using one diffusion coefficient for all species and the process-based multi-component (MC) option. With this, ...
Note:
kumulative Dissertation
,
Dissertation Universität Potsdam 2022
Additional Edition:
Erscheint auch als Online-Ausgabe Hennig, Theresa Uranium migration in the Opalinus Clay quantified on the host rock scale with reactive transport simulations Potsdam, 2022
Language:
English
Keywords:
Endlager
;
Radioaktiver Abfall
;
Hydrochemie
;
Porenwasser
;
Radionuklid
;
Opalinuston
;
Ton
;
Uran
;
Migration
;
Modellierung
;
Sorption
;
Hydrogeochemie
;
Phreeqc
;
Radioaktiver Abfall
;
Endlager
;
Radionuklid
;
Geochemie
;
Sorption
;
Hochschulschrift
Author information:
Kempka, Thomas 1976-
Author information:
Brendler, Vinzenz 1963-
