Partners
Contact
Dr. Dmitrii A. Kulik
Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland  +41-56-3104742 |
Short course with tutorial on aqueous - solid solution systems involving actinides (thermodynamic and experimental aspects)
Status
| Terminated |
- Planned from November 2005 till November 2005 |
Goals
A short tutorial course focussed on thermodynamic and experimental aspects of solid solution formation in aquatic systems was held. This subject is important for radioactive waste management because many actinides and fission products are expected to be trapped as solid solutions in secondary phases formed in the near- and far field of nuclear waste repositories. Therefore, a sound understanding of the solid solution concept should be established in the actinide geochemistry community. Also, we think that this topic should be communicated especially to young scientists and students through a thematic school. Hence, the topics of the workshop will be specifically addressed to match the knowledge of advanced (PhD) students and Post-Docs. The lectures will provide a short but comprehensive overview on phenomenology and thermodynamics of solid solutions, and give an account of the related experimental methods and the practical modelling of aqueous - solid solution systems. An advanced computer tool especially suited for solid solution modelling (developed and used at the PSI), the GEMS-PSI code, will be introduced and applied in practical exercises.
Expected results
The overall aim is to communicate the experimental and theoretical specific “know-how” on radionuclides incorporation in solid solutions to young scientists and students in the form of a short course with tutorial. This can be subdivided into four main objectives: - To explain theoretical background of aqueous - solid solution systems with emphasis on trace element (RN) partitioning in AqSS systems. - To discuss processes relevant to AqSS systems, such as recrystallization, coprecipitation and dissolution. - To give a pragmatic overview of experimental studies of solid solution formation in aqueous systems with trace amounts of actinides and fission products. - To introduce an advanced practical tool for forward and inverse thermodynamic modelling of AqSS systems - the GEMS-PSI code.
Reports
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