Description processes of the interaction of water and aqueous solutions with fuel-containinig materials in the New Safe Confinement of the "Shelter'' object

Abstract

The main mechanisms and conditions of interaction of lava-like fuel-containing materials (LFCM) with the atmosphere, water and aqueous solutions are presented. The mechanisms of destruction of the LFCM surface, including ion-exchange processes, hydrolysis, dissolution, oxidation, etc., were analyzed. Inhomogeneous diffusion coefficients for UO${}_2^{2+}$, Cs${}^{+}$ ions at the interface "aqueous solution of radioactive elements - LFCM" were calculated. The interdiffusion processes and the rate of penetration into the porous medium of the reaction front of the internal hydrolysis of the silicon-oxygen network during interaction with an aqueous solution were analyzed, where the reaction and adsorption processes are hidden in the rate of internal hydrolysis.

18 pages, 4 figures

References in corpus (2)

• Hyperbolic subdiffusive impedance
• Stochastic simulation of destruction processes in self-irradiated materials

Cited by in corpus (1)

• A consistent description of the kinetic processes of electrolyte ion transport in a dynamic porous medium