Sodium diffusion and leaching of simulated nuclear waste glass

Journal Article · Sun Jul 01 00:00:00 EDT 1984 · J. Am. Ceram. Soc.; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1984.tb19635.x· OSTI ID:6213346

McGrail, B P; Day, D E; Kumar, A

Oxides such as CaO, ZnO, Fe/sub 2/O/sub 3/, and ZrO/sub 2/ were substituted for SiO/sub 2/ into a 14 Na/sub 2/O . 10 B/sub 2/O/sub 3/ . 76 SiO/sub 2/ (wt%) glass in proportion to their weight percent in PNL-7668 simulated nuclear waste glass. No correlation was found between the Na diffusion coefficient (D /SUB Na/ ) in the bulk glass and sodium leaching in water for any of the iron-containing borosilicate glasses. Effective diffusion coefficients calculated from the sodium leach rates in deionized water were 500 to 2000 times larger than D /SUB Na/ . The experimental leaching data agreed with a diffusion-convection model where the convective term was a measured ''phase boundary'' velocity moving into the glass.

• Research Organization: Univ. of Missouri Rolla, Rolla, MO
• OSTI ID: 6213346
• Journal Information: J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 67:7; ISSN JACTA
• Country of Publication: United States
• Language: English

Related Subjects

052002 -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360604* -- Materials-- Corrosion
Erosion
& Degradation
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKALINE EARTH METAL COMPOUNDS
AQUEOUS SOLUTIONS
BENCH-SCALE EXPERIMENTS
BOROSILICATE GLASS
BOUNDARY CONDITIONS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CALCULATION METHODS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CONVECTION
DIFFUSION
DISPERSIONS
DISSOLUTION
ELEMENTS
ENERGY TRANSFER
GLASS
HEAT TRANSFER
HIGH-LEVEL RADIOACTIVE WASTES
IRON COMPOUNDS
IRON OXIDES
LEACHING
MASS TRANSFER
MATERIALS
MATHEMATICAL MODELS
METALS
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
QUANTITY RATIO
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
SEPARATION PROCESSES
SIMULATION
SODIUM
SODIUM COMPOUNDS
SODIUM OXIDES
SOLUTIONS
TRANSITION ELEMENT COMPOUNDS
WASTES
ZINC COMPOUNDS
ZINC OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES