2016 Update of Hanford Glass Property Models and Constraints for Use in Estimating the Glass Mass to be Produced at Hanford by Implementing Current Enhanced Glass Formulation Efforts

Vienna, John D.; Piepel, Gregory F.; Kim, Dong-Sang; Crum, Jarrod V.; Lonergan, Charmayne; Stanfill, Bryan; Riley, Brian J.; Cooley, Scott K.; Jin, Tongan

doi:10.2172/1772236

Cited by 33 publications

(41 citation statements)

References 21 publications

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“…2,3 The low-viscosity, electrically conductive salt layer, being rich in water-soluble alkali/alkaline-earth sulfates along with specific radionuclides (such as 99 Tc, 90 Sr, and 137 Cs), can cause several problems for the melter-for example, corrosion of container walls, shorting of the heating electrodes, risks of explosion due to low viscosity and low density-thus, severely impacting its performance and lifetime. [4][5][6] In order to avoid the above-mentioned complications, and for the safe operation of the melter, empirical models have been developed to predict the practical limit of salt solubility in the melt as a function of feed composition. For example, Vienna et al, 6 based on 253 simulated Hanford LAW glass compositions, established an empirical model to predict the SO 3 solubility in LAW glasses as a function of the concentration of different components in the melter feed (as shown in Eqn.…”

Section: -mentioning

confidence: 99%

Correlating Sulfur Solubility with Short-to-Intermediate Range Ordering in the Structure of Borosilicate Glasses

Saini

Kapoor²,

Youngman

et al. 2022

J. Phys. Chem. C

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Section: -mentioning

confidence: 99%

Correlating Sulfur Solubility with Short-to-Intermediate Range Ordering in the Structure of Borosilicate Glasses

Saini

Kapoor²,

Youngman

et al. 2022

J. Phys. Chem. C

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“…31,32 Also, it may be present in sodium-and alumina-rich HLW, though in smaller concentration (≤5 wt.%). 33 From scientific viewpoint, the influence of P 2 O 5 on the structure, phase separation, and crystallization behavior of glasses in R 2 O-B 2 O 3 -SiO 2 and R 2 O-Al 2 O 3 -SiO 2 (where R 2 O refers to an alkali oxide) system has been thoroughly investigated and reported in literature. [23][24][25]30,[34][35][36][37] However, there is a severe lack of knowledge about the structure and thermo-physical properties of glasses in the R 2 O-Al 2 O 3 -B 2 O 3 -P 2 O 5 -SiO 2 system.…”

Section: = (𝑔mentioning

confidence: 99%

Structural dependence of crystallization in phosphorus‐containing sodium aluminoborosilicate glasses

Ping

Kapoor²,

Kobera

et al. 2021

J Am Ceram Soc.

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The article reports on the structural dependence of crystallization in Na 2 O-Al 2 O 3 -B 2 O 3 -P 2 O 5 -SiO 2 -based glasses over a broad compositional space. The structure of melt-quenched glasses has been investigated using 11 B, 27 Al, 29 Si, and 31 P magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy, while the crystallization behavior has been followed using X-ray diffraction and scanning electron microscopy combined with energy dispersive spectroscopy. In general, the integration of phosphate into the sodium aluminoborosilicate network is mainly accomplished via the formation of Al-O-P and B-O-P linkages with the possibility of formation of Si-O-P linkages playing only a minor role. In terms of crystallization, at low concentrations (≤5 mol.%), P 2 O 5 promotes the crystallization of nepheline (NaAlSiO 4 ), while at higher concentrations (≥10 mol.%), it tends to suppress (completely or incompletely depending on the glass chemistry) the crystallization in glasses. When correlating the structure of glasses with their crystallization behavior, the MAS NMR results highlight the importance of the substitution/replacement of Si-O-Al linkages by Al-O-P, Si-O-B, and B-O-P linkages in the suppression of nepheline crystallization in glasses. The results have been discussed in the context of (1) the problem of nepheline crystallization in Hanford high-level waste glasses and (2) designing vitreous waste forms for the immobilization of phosphate-rich dehalogenated Echem salt waste.

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“…Some work has been done to increase the MnO concentration in HLW glass, such as the proposed 2016 Hanford HLW glass models that incorporate an MnO constraint of 8 wt.%. However, this strategy is based on a spinel concentration limit of 2 volume percent at 950°C, 20 which does not result in a homogeneous glass, and the 8 wt.% MnO constraint is still below the SB19 concentrations projections shown in Table 5-1…”

Section: Resultsmentioning

confidence: 99%

Evaluation of the Impact of Additional Manganese from the Recycle Collection Tank (RCT) Glycolate Destruction Process on Glass Properties

WILLIAMS¹,

Johnson²

2022

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2016 Update of Hanford Glass Property Models and Constraints for Use in Estimating the Glass Mass to be Produced at Hanford by Implementing Current Enhanced Glass Formulation Efforts

Cited by 33 publications

References 21 publications

Correlating Sulfur Solubility with Short-to-Intermediate Range Ordering in the Structure of Borosilicate Glasses

Correlating Sulfur Solubility with Short-to-Intermediate Range Ordering in the Structure of Borosilicate Glasses

Structural dependence of crystallization in phosphorus‐containing sodium aluminoborosilicate glasses

Evaluation of the Impact of Additional Manganese from the Recycle Collection Tank (RCT) Glycolate Destruction Process on Glass Properties

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