Water resistance and ion diffusion in glass materials simulating vitrified radioactive waste

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Glass Physics and Chemistry

OSTI ID:110885

Ivanov, I A; Gulin, A N ^[1]; Stefanovskii, S V ^[2]

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1. St. Petersburg Institute of Technology (Russian Federation)
2. RADON Research and Production Association, Moscow (Russian Federation)

Water resistance and diffusion properties of glass materials are studied with reference to pseudobinary systems: simulated ash residue oxides ARO-Na{sub 2}O{center_dot}2B{sub 2}O{sub 3} and ARO-Na{sub 2}O{center_dot}2SiO{sub 2}. The rate of sodium cation leaching is shown to decrease from increasing ARO content, reaching 10{sup -12}, 10{sup -14} kg m{sup -2} s{sup -1}, which satisfies relevant environmental requirements. The diffusion coefficients of sodium cations in ash-containing aluminosilicate glasses, measured by the method of integrated residual activity using the radionuclide {sup 22}Na, are equal to 10{sup -12} - 10{sup -13} kg m{sup -2} s{sup -1} and are 4 to 5 orders of magnitude greater than the diffusion coefficients of the radionuclides {sup 90}Sr and {sup 137}Cs.

• OSTI ID: 110885
• Journal Information: Glass Physics and Chemistry, Journal Name: Glass Physics and Chemistry Journal Issue: 5 Vol. 19; ISSN GPHCEE
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
36 MATERIALS SCIENCE
ALUMINIUM OXIDES
ASHES
BOROSILICATE GLASS
CESIUM 137
CHEMICAL COMPOSITION
DIFFUSION
HIGH-LEVEL RADIOACTIVE WASTES
INTERMEDIATE-LEVEL RADIOACTIVE WASTES
LEACHING
SILICON OXIDES
SODIUM OXIDES
STRONTIUM 90
VITRIFICATION