Results from long-term use of the MCC-1 static leach test method

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Nucl. Chem. Waste Manage.; (United States)

DOI:https://doi.org/10.1016/0191-815X(83)90008-6· OSTI ID:5380727

Strachan, D M

At the Materials Characterization Center (MCC), standard tests are being developed to provide reference data for characterizing nuclear waste forms, canisters, and backfills. As part of this development program, a 1-yr test was conducted to determine the usefulness of the MCC-1 Static Leach Test Method and the quality of the data that are generated. The data generated during the tests on PNL 76-68 glass showed that the leaching of this glass at 90/sup 0/C slowed significantly with time in deionized water and silicate water leachants but continued at a significant rate in brine. The alteration phases were tentatively identified as sauconite, ferrihydrite, talc, and sepiolite. Tests also were performed at 40 and 70/sup 0/C. These results provided an estimation of 74 kJ.mol/sup -1/.K/sup -1/ for the activation energy. In general, the results from this study indicated the importance of long-term testing in excess of 1 yr.

• Research Organization: Pacific Northwest Laboratory, Richland, Washington
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5380727
• Journal Information: Nucl. Chem. Waste Manage.; (United States), Journal Name: Nucl. Chem. Waste Manage.; (United States) Vol. 4:2; ISSN NCWMD
• 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
ACTIVATION ENERGY
ALKALINE EARTH METAL COMPOUNDS
BACKFILLING
BOROSILICATE GLASS
BRINES
CLAYS
CONTAINERS
DATA
DATA ACQUISITION
DISPERSIONS
DISSOLUTION
ENERGY
EXPERIMENTAL DATA
GLASS
INFORMATION
LEACHATES
LEACHING
MAGNESIUM COMPOUNDS
MAGNESIUM SILICATES
MATERIALS
MATERIALS TESTING
MINERALS
MIXTURES
NUMERICAL DATA
OXYGEN COMPOUNDS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
SEPARATION PROCESSES
SEPIOLITE
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SOLUTIONS
TALC
TESTING
WASTE FORMS
WASTES