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CC BY-NC-SA V4.0, Open Access
Dissertation
ANALYSIS OF SIMULATED NUCLEAR WASTE GLASS ON SULFUR SOLUBILITY AND REFRACTORY CORROSION
Washington State University
Doctor of Philosophy (PhD), Washington State University
01/2022
DOI:
https://doi.org/10.7273/000004607
Handle:
https://hdl.handle.net/2376/125339
Abstract
Understanding how various elements effect refractory corrosion and sulfate solubility is important for nuclear waste vitrification. Salt formation during the vitrification process is not desired for various reasons including the corrosive nature of salt and the formation of a water-soluble salts which may contain radioactive particles. This work focuses on two main objectives (1) refractory corrosion and (2) understanding how various anions alter a glass structure and the effect they have on sulfate retention. The first objective, regarding refractory corrosion, focuses on understanding the mechanisms involved through visualization with scanning electron microscopy and then discussing the develop of a predictive refractory corrosion model. The second objective focuses on understanding of how anion components (e.g., halides and oxyanions such as sulfate) affect the structure and chemistry of borosilicate glass as applied to the incorporation of these elements (e.g., F, Cl, S, Cr, V) in nuclear waste glasses. Various analytical techniques are utilized to investigate the changes in glass structure, including magic angle spinning nuclear magnetic resonance (MAS-NMR), thermal analysis (DTA/TGA), x-ray diffraction (XRD), absorption spectroscopy (UV-Vis), electron microprobe (EPMA), and Raman spectroscopy.
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Details
- Title
- ANALYSIS OF SIMULATED NUCLEAR WASTE GLASS ON SULFUR SOLUBILITY AND REFRACTORY CORROSION
- Creators
- Natalie Jenny Smith-Gray
- Contributors
- John McCloy (Advisor)Scott Beckman (Committee Member)Min-Kyu Song (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Mechanical and Materials Engineering, School of
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Publisher
- Washington State University
- Number of pages
- 241
- Identifiers
- 99900901140701842
- Language
- English
- Resource Type
- Dissertation