Susanne Zechel
s.zechel
hzdr.de
Phone: +49 351 260 3328
Sorption Reference Database (SOREDA)
Funded by:
BGE, the federal company for radioactive waste disposal: EKFuE-21-03-js
Period:
04/2022 – 06/2026
Partners:
- HZDR, Institute of Resourc ecology (coordinator)
- Paul-Scherrer-Institute, Laboratory for Waste Management
People:
Susanne Zechel (HZDR), Frank Bok (Projektleitung, HZDR), Dan Miron (PSI-LES), (Olha Marinich, PSI-LES)
SOREDA team
Short description
Sorption on the surfaces of mineral phases is one of the determining retention mechanisms for radionuclides alongside precipitation. Sorption must be regarded as the most effective form of retention, especially in the far field of a repository. A thermodynamic description of sorption and thus the inclusion of aquatic chemistry, including the possibility of incorporating changes in geochemistry into these calculations, is possible using surface complexation modeling (SCM). Despite the extremely successful development of SCM and a large number of publications on investigations of the sorption of various radionuclide-mineral combinations, there is currently no reference database for SCM worldwide.
The aim of the project is to derive a quality-assured reference database for sorption data, store it in a relational database and make it available in the specific formats of geochemical calculation programs. To this end, the experimental data available in the literature on sorption investigations are to be collected, critically evaluated, re-digitized and consistently re-evaluated. The focus is on the use of chemically evident surface species, which enables the derivation of simple but robust SCMs.
Publications
2025
Application of a community FAIR sorption database to radionuclide surface complexation and ion exchange models for nuclear waste repository science
Zavarin, M.; Han, S.-C.; Zechel, S.; Brendler, V.; Bok, F.; Powell, B.; Coutelot, F.; Marinich, O.; Marques Fernandes, M.; Miron, D.-G.
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Poster
19th Conference on the Migration of Actinides and Fission Products in the Geosphere (Migration '25), 21.-26.09.2025, New Orleans, USA
A Reference Database of Radionuclide Sorption to Support the Safety Assessment of Deep Geological Repositories
Marinich, O.; Miron, G.-D.; Bok, F.; Zechel, S.; Brendler, V.; Marques Fernandes, M.; Baeyens, B.
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Lecture (Conference)
safeND 2025: Forschungssymposium des BASE, 17.-19.09.2025, Berlin, Deutschland
SOREDA – a consistent surface complexation modelling database for radionuclide sorption
Bok, F.; Zechel, S.; Miron, G.-D.; Marinich, O.; Brendler, V.
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Invited lecture (Conferences)
Workshop on thermodynamic modeling Connecting Theory and Application: Tackling Challenges in Surface Complexation and Reactive Transport Modeling, 12.-14.05.2025, Braunschweig, Deutschland
2024
2023
Application of Community Data to Surface Complexation Modeling Framework Development: Iron Oxide Protolysis
Han, S.-C.; Chang, E.; Bok, F.; Zechel, S.; Zavarin, M.
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Journal of Colloid and Interface Science 648(2023), 1015-1024
DOI: 10.1016/j.jcis.2023.06.054
Cited 8 times in Scopus
