Nepheline crystallization in boron-rich alumino-silicate glasses as investigated by multi-nuclear NMR, Raman, & Mössbauer spectroscopies

J McCloy, N Washton, P Gassman, J Marcial… - Journal of Non …, 2015 - Elsevier
A spectroscopic study was conducted on six simulant nuclear waste glasses using multi-
nuclear NMR, Raman, and Mössbauer spectroscopies exploring the role of Si, Al, B, Na, and …

Crystallization of iron‐containing sodium aluminosilicate glasses in the NaAlSiO4‐NaFeSiO4 join

M Ahmadzadeh, J Marcial… - Journal of Geophysical …, 2017 - Wiley Online Library
Although natural materials are the subject of most Earth science articles, fundamental
studies on analogous synthetic materials, produced under laboratory‐controlled conditions …

Glass property models and constraints for estimating the glass to be produced at Hanford by implementing current advanced glass formulation efforts

JD Vienna, DS Kim, DC Skorski, J Matyas - 2013 - osti.gov
Recent glass formulation and melter testing data have suggested that significant increases
in waste loading in HLW and LAW glasses are possible over current system planning …

Plasma filtering techniques for nuclear waste remediation

R Gueroult, DT Hobbs, NJ Fisch - Journal of Hazardous Materials, 2015 - Elsevier
Nuclear waste cleanup is challenged by the handling of feed stocks that are both unknown
and complex. Plasma filtering, operating on dissociated elements, offers advantages over …

Non-linear effects of alumina concentration on Product Consistency Test response of waste glasses

JD Vienna, JV Crum - Journal of Nuclear Materials, 2018 - Elsevier
The effect of alumina mole fraction on the 7-day Product Consistency Test (PCT) responses,
ln [NL α], of simulated nuclear waste glasses was examined. It was found that the effect is …

Submixture model to predict nepheline precipitation in waste glasses

JD Vienna, JO Kroll, PR Hrma… - … Journal of Applied …, 2017 - Wiley Online Library
High‐alumina high‐level waste (HLW) glasses are prone to nepheline precipitation during
canister‐centerline cooling (CCC). If sufficient nepheline forms, the chemical durability of the …

Effects of Al: Si and (Al+ Na): Si ratios on the properties of the international simple glass, part I: Physical properties

JT Reiser, X Lu, B Parruzot, H Liu… - Journal of the …, 2021 - Wiley Online Library
Understanding composition‐structure‐property relationships of high‐alumina nuclear waste
glasses are important for vitrification of nuclear waste at the Hanford Site. Two series of …

The structures of iron silicate glasses with varying iron redox ratios from molecular dynamics simulations and EXAFS analysis

MI Tuheen, MCD Wilkins, J McCloy, J Du - Journal of Non-Crystalline Solids, 2024 - Elsevier
Iron oxides are frequently found in natural and industrial glass compositions and can affect
various physical and chemical properties of the glasses and their melts. Thus, a fundamental …

Nepheline structural and chemical dependence on melt composition

J Marcial, J Crum, O Neill, J McCloy - 2016 - degruyter.com
Nepheline crystallizes upon slow-cooling in some melts concentrated in Na2O and Al2O3,
which can result in a residual glass phase of low chemical durability. Nepheline can …

[PDF][PDF] Glass property models, constraints, and formulation approaches for vitrification of high-level nuclear wastes at the US Hanford Site

D Kim - Journal of the Korean Ceramic Society, 2015 - jkcs.or.kr
Current plans for legacy nuclear wastes stored in underground tanks at the US Department
of Energy's Hanford Site in Washington are that they will be separated into high-level waste …