Secondary Waste Form Screening Test Results—Cast Stone and Alkali Alumino-Silicate Geopolymer
Pierce, Eric M.
Cantrell, Kirk J.
Westsik, Joseph H.
Parker, Kent E.
Um, Wooyong
Valenta, Michelle M.
Serne, R. Jeffrey
United States. Department of Energy.
Pacific Northwest National Laboratory (U.S.)
2010-06-28
English
PNNL is conducting screening tests on the candidate waste forms to provide a basis for comparison and to resolve the formulation and data needs identified in the literature review. This report documents the screening test results on the Cast Stone cementitious waste form and the Geopolymer waste form. Test results suggest that both the Cast Stone and Geopolymer appear to be viable waste forms for the solidification of the secondary liquid wastes to be treated in the ETF. The diffusivity for technetium from the Cast Stone monoliths was in the range of 1.2 × 10-11 to 2.3 × 10-13 cm2/s during the 63 days of testing. The diffusivity for technetium from the Geopolymer was in the range of 1.7 × 10-10 to 3.8 × 10-12 cm2/s through the 63 days of the test. These values compare with a target of 1 × 10-9 cm2/s or less. The Geopolymer continues to show some fabrication issues with the diffusivities ranging from 1.7 × 10-10 to 3.8 × 10-12 cm2/s for the better-performing batch to from 1.2 × 10-9 to 1.8 × 10-11 cm2/s for the poorer-performing batch. In the future more comprehensive and longer term performance testing will be conducted, to further evaluate whether or not these waste forms will meet the regulation and performance criteria needed to cost-effectively dispose of secondary wastes.
Technetium Release
Integrated Disposal Facility
Waste Treatment Plan Secondary Waste
Testing
Low Temperature Immobilization
Liquid Wastes
Wtp
Waste Forms
Performance Testing
Technetium
Geopolymer
12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities
Wastes Waste Treatment Plan Secondary Waste
Epa Methods 1313, 1315, And 1316
Solidification
Cast Stone
Performance
Idf
Report
PDFN
Text
rep-no: PNNL-19505
grantno: AC05-76RL01830
doi: 10.2172/989447
osti: 989447
https://digital.library.unt.edu/ark:/67531/metadc1012350/
ark: ark:/67531/metadc1012350