About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Ceramics and Glasses for Nuclear Energy Applications
|
| Presentation Title |
Investigating the Impact of BiPO4 on Sulfur Solubility in Sodium Aluminoborosilicate Glasses |
| Author(s) |
Nedgine Joseph, Xinyi Xu, Rajan Saini, Randall Youngman, John Bussey, John McCloy, Ashutosh Goel |
| On-Site Speaker (Planned) |
Nedgine Joseph |
| Abstract Scope |
Several HLW streams were produced from the reprocessing of 239Pu at the Hanford site, including those from the Bismuth phosphate (BiPO4) separation process. The BiPO4 process produced the largest waste volume per ton fuel in comparison to the REDOX and PUREX processes. The structural role of BiPO4 affecting sulfur loading during nuclear waste vitrification is therefore of interest. Specifically, this study aims to understand how the co-presence of Bi2O3 and P2O5 units influence the overall glass structure and thereby, the accommodation of sulfur in structure. Accordingly, phosphorus and bismuth doped/co-doped (as BiPO4) glasses were designed and synthesized in parallel. The sulfur solubilities in the investigated glasses are determined by compositional analysis (ICP-OES). Spectroscopic techniques, including MAS NMR, Raman spectroscopies will be employed to unearth the structural drivers controlling sulfur incorporation in these glasses. |