| About this Abstract |
| Meeting |
Materials Science & Technology 2019
|
| Symposium
|
Materials Issues in Nuclear Waste Management
|
| Presentation Title |
The Relationship between Zeolite Type and Glass Dissolution Rate Resumption |
| Author(s) |
James Neeway, Radha Motkuri, Jarrod C. Crum, Emily Freeman, Giannis Mpourmpakis, Adam Mallette, Jeffrey D. Rimer |
| On-Site Speaker (Planned) |
James Neeway |
| Abstract Scope |
Stage III is a delayed acceleration in the glass dissolution rate that coincides with the presence of zeolitic minerals in the system. Recent advances in glass corrosion science have intentionally added, or “seeded”, the system with zeolite minerals in order to initiate Stage III behavior. These seeding tests serve to more accurately measure Stage III glass dissolution rates and overcome long induction times needed for zeolite nucleation and growth. However, one main difference between these seeded tests and “natural” Stage III observations is the zeolites observed in “natural” tests do not necessarily match the list of zeolites that cause induce Stage III behavior in seeded tests. The aim of this presentation is provide results with a set of zeolite seeds and explain why only certain zeolite types induce Stage III behavior. These results can be used to design systems that limit the impact of Stage III behavior on the long-term storage of nuclear waste glass. |