About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Ceramics and Glasses for Nuclear Energy Applications
|
| Presentation Title |
Influence of Compositional Complexity on the Structural Integrity of Residual (SIR) and Chemical Leaching Behavior in Nuclear Waste Glasses |
| Author(s) |
Jake W. Amoroso, Robert Hausrath, NIcodemus Rod |
| On-Site Speaker (Planned) |
Jake W. Amoroso |
| Abstract Scope |
An empirically derived relationship between glass composition and crystallization, termed the Structural Integrity of Residual (SIR), has been developed to allow for higher waste loading in nuclear waste glasses while maintaining acceptable chemical durability. The SIR is derived by partitioning the glass composition into theoretical crystalline phases anticipated during devitrification and the resultant residual glass. The crystalline phases that are developed in a glass during cooling will depend on the overall glass composition. This work examines the influence of compositional complexity on the residual glass structure and the resulting leaching behavior of nuclear waste glasses designed for the Hanford Tank Waste Treatment and Immobilization Plant. In this work, a series of glasses were systematically designed by varying the number of oxide components from four to twenty. Results of chemical durability testing, phase analysis, and structure will be presented in terms of the SIR model and overall nuclear waste glass design. |