Immobilization of Hanford LAW in iron phosphate glasses

Kim, Cheol-Woon; Day, Delbert E.

doi:10.1016/j.jnoncrysol.2003.08.070

Cited by 117 publications

(86 citation statements)

References 16 publications

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“…The XRD patterns of the compounds crystallizing in PFS0, PFS20, and PFS50 glasses at Tc temperature indicated by the DSC are presented in Fig. 6 and 4 , is detected. Generally, in iron phosphate glasses, composition of the crystallizing compounds depends on the glass composition, heat treatment and its atmosphere, and the Fe 2?…”

Section: Resultsmentioning

confidence: 99%

“…Berlinite structure is close to the structure of quartz (SiO 2 4 ] tetrahedra, joined each other by the bridging oxygen's-mixed aluminophosphate network [17].…”

Section: Discussionmentioning

confidence: 99%

“…breaks the oxide bridges, disintegrating the network. Part of Fe-O-P bonds is broken and substituted by Na-PO 4 bonds, and number of this substitution is growing with sodium content. Formulas of compounds crystallizing in glasses (Table 3) are the argument for this.…”

Section: Discussionmentioning

confidence: 99%

“…The iron phosphate glasses, besides their excellent chemical durability, have the melting temperature about 100-200 K lower than borosilicate glass, and due to the high fluidity of the melts, their homogenization time is about 1.5-3 h shorter [4]. It is way they can be suitable for vitrifying waste containing significant quantities of volatile elements such as Cs.…”

Section: Introductionmentioning

confidence: 99%

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Thermal properties of phosphate glasses for salt waste immobilization

Stoch

Ciecińska

Stoch

2014

J Therm Anal Calorim

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Vitrification is the most effective method of the hazardous waste immobilization. Toxic elements are incorporated into glass structure. Iron phosphate glasses are presently being considered as a matrix for storage of the radioactive waste which cannot be vitrified using a conventional borosilicate glass. Influence of Na 2 SO 4 as one of the components such the waste on thermal properties and crystallization ability of iron phosphate waste glass was studied. It was observed that Na 2 SO 4 decreases transformation temperature and increases DC p . The glass characteristic temperatures, glass crystallization ability, and crystallizing phases were determined. Na 2 SO 4 increases the glass crystallization ability which could be related with DC p heat capacity accompanying glass transition changes. The glass internal structure rebuilding, accompanying the sodium content increase, is considered. It is shown that DC p is a suitable, structure-sensitive glass crystallization ability, parameter.

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Section: Resultsmentioning

confidence: 99%

“…Berlinite structure is close to the structure of quartz (SiO 2 4 ] tetrahedra, joined each other by the bridging oxygen's-mixed aluminophosphate network [17].…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermal properties of phosphate glasses for salt waste immobilization

Stoch

Ciecińska

Stoch

2014

J Therm Anal Calorim

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“…Besides their excellent chemical durability, iron phosphate glasses have the melting temperature about 100-200 K lower than borosilicate glass, and also due to lower viscosity of the melts, their homogenization time is more than 4 times shorter [7].…”

Section: Introductionmentioning

confidence: 99%

Thermal properties of 60P2O5–20Fe2O3–20Al2O3 glass for salt waste immobilization

Ciecińska

Stoch

et al. 2015

J Therm Anal Calorim

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Vitrification is the most effective method of hazardous waste immobilization. Toxic elements are incorporated into a glass structure. Iron alumino-phosphate glasses are presently being considered as a matrix for storage of a radioactive waste which cannot be vitrified using conventional borosilicate waste glasses. Influence of Na 2 SO 4 as a one of components such the waste on thermal properties and crystallization ability of 60P 2 O 5 -20Fe 2 O 3 -20Al 2 O 3 glass was studied. It was observed that Na 2 SO 4 decreases transformation temperature and increases DC p . The glass characteristic temperatures, glass crystallization ability and crystallizing phases were determined. Na 2 SO 4 increases the glass crystallization ability which could be related with DC p heat capacity accompanying glass transition changes. The glass internal structure rebuilding accompanying the sodium content increase is considered. The obtained results were compared with structural model previously developed for 60P 2 O 5 -40Fe 2 O 3 glass and showed the structural similarity between these glasses.

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