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4. Glass weathering kinetics
Understanding the weathering mechanisms of nuclear glass is primarily aimed at quantifying weathering kinetics and assessing the release rates of radioelements into the environment. The mechanisms described above depend on the following sequence:
transport of the reagent to the reaction site ;
chemical reaction ;
transport of reaction products away from the reaction site.
These transport stages and the various reactions that follow one another or take place in parallel make glass weathering in the broadest sense a complex process, limited either by the fastest sequence for reactions that occur in parallel, or by the slowest sequence for reactions that follow one another (figure
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Glass weathering kinetics
Impact of glass composition on weathering kinetics
Bibliography
Software tools
Software CHESS and HYTEC (geochemical code – transport), developed by the Ecole des Mines de Paris, J. van der Lee, L. De Windt, V. Lagneau, P. Goblet, Comput. Geosci. 29 (2003), pp. 265-275. https://chess.geosciences.mines-paristech.fr/
Events
GDR Glass
Standards and norms
- Methodology for the determination of the leaching behaviour of waste under specified conditions - AFNOR X30-407 – ENV 12920 - 10-06
- Technologie du cycle du combustible nucléaire déchets-test de durabilité chimique en mode Soxhlet. Application aux matériaux issus des procédés de vitrification - AFNOR NF M 60-313 [NF M 60-313] - 12-06
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Laboratories – Design offices – Schools – Research centers (non-exhaustive list)
Joint vitrification laboratory, waste treatment and conditioning research department, CEA Marcoule, Bagnols-sur-Cèze, France
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