Effect of gamma radiolysis on waste glass leaching on brines. [Gamma rays]
The effect of gamma radiolysis of a deaerated, saturated, NaCl-rich brine on leaching of a simulated nuclear waste glass was evaluated at 50 and 90/sup 0/C and included interactive tests with ductile iron. Leach rate enhancements due to radiolysis were greatest at 50/sup 0/C. Inclusion of iron at this temperature, known to accelerate glass at 50/sup 0/C. Inclusion of iron at this temperature, known to accelerate glass leaching in the absence of radiolysis, gave leach rates greater than for glass alone plus radiolysis or for glass plus ductile iron in the absence of radiolysis. However, at 90/sup 0/C, no enhancement in leaching due to radiolysis was evident with or without iron. It is concluded that reaction of the glass with transient radiolysis products is responsible for the leach rate increase at 50/sup 0/C.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 5961178
- Report Number(s):
- PNL-SA-11297; CONF-830451-19; ON: DE83016177
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360604* -- Materials-- Corrosion
Erosion
& Degradation
360605 -- Materials-- Radiation Effects
BOROSILICATE GLASS
BRINES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
DISSOLUTION
ELECTROMAGNETIC RADIATION
GAMMA RADIATION
GLASS
HIGH-LEVEL RADIOACTIVE WASTES
IONIZING RADIATIONS
LEACHING
MATERIALS
MEDIUM TEMPERATURE
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIOLYSIS
SEPARATION PROCESSES
WASTES