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Welcome to THEREDA

THEREDA (Thermodynamic Reference Database) is a joint project dedicated to the creation of a comprehensive, internally consistent thermodynamic reference database. This database, together with suitable codes for the geochemical modeling of aqueous electrolyte solutions up to high concentrations. This is of paramount importance for processes in the near- and far-field of different host rock types, which are envisaged as potential sites for final repositories in Germany. At present, THEREDA represents the only database worldwide for the host rock salt, which covers polyterm the entire system of oceanic salts including acids and bases.

THEREDA was planned, implemented and is further developed jointly by established research institutions working in the field of final disposal of radioactive waste and its potential host rocks (THEREDA-Partners).

News: Upgrade of 9th release and new data in 12th release

On May 07th and July 16th 2018, new data was released from the Thermodynamic Reference Database (THEREDA).

The new releases of data from the THEREDA database come with parameter files for the system

R-12: H2PO4−/HPO42−/PO43− - Na+,K+,Mg2+,Ca2+ - Cl−,SO42−,CO32− - H2O(l)

R-09.1 (Upgrade): U(IV)/(VI) - Na+,K+,Mg2+,Ca2+ - Cl−,SO42−,CO32− & H2PO4−/HPO42−/PO43− - H2O.

Valid range of temperature: 298.15 K

Supported codes: CHEMAPP, PHREEQC, Geochemist's Workbench

The released data represent only a small part of all data stored in THEREDA. As documentation, assessment, amendment and testing of the data is an ongoing process, there will be further releases in the future covering more elements, reactions and interactions.
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