Dechlorination of molten chloride waste salt from electrorefining via ion-exchange using pelletized ultra-stable H-Y zeolite in a fluidized particle reactor.
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| Title: | Dechlorination of molten chloride waste salt from electrorefining via ion-exchange using pelletized ultra-stable H-Y zeolite in a fluidized particle reactor. |
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| Authors: | Wasnik, M. S.1 (AUTHOR) manish15988@gmail.com, Grant, A. K.1 (AUTHOR), Carlson, K.1 (AUTHOR), Simpson, M. F.1 (AUTHOR) |
| Source: | Journal of Radioanalytical & Nuclear Chemistry. May2019, Vol. 320 Issue 2, p309-322. 14p. 1 Color Photograph, 4 Diagrams, 6 Charts, 5 Graphs. |
| Subjects: | Fluidized reactors, Radioactive wastes, Melting points, Salt, Chlorides, Fused salts |
| Abstract: | Dechlorination of eutectic LiCl–KCl based electrorefiner (ER) salt is reported via ion-exchange reaction with protonated ultrastable Y-type (USHY) zeolite bound into mechanically fluidized 45–250 μm diameter particles. Evidence of exchange of cations from the salt (Li+, K+, and fission product cations) into the zeolite lattice replacing H+ ions was found based on a change in unit cell size, ICP-MS, XRD and TEM–EDS in addition to detection of HCl off gas. Ion exchange reaction was carried out at 625 and 650 °C, temperatures above the melting point of eutectic LiCl–KCl. Experiments were carried out to optimize zeolite drying temperature, estimate maximum ion-exchange capacity, and determine the thermal stability of USHY zeolite. The results indicate over 90% dechlorination can be achieved without zeolite structure collapse at 625 °C. This provides a promising route to stabilizing waste from radioactive chloride salts into dechlorinated waste forms for permanent geologic disposal. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Radioanalytical & Nuclear Chemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 135911313 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Dechlorination of molten chloride waste salt from electrorefining via ion-exchange using pelletized ultra-stable H-Y zeolite in a fluidized particle reactor. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wasnik%2C+M%2E+S%2E%22">Wasnik, M. S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> manish15988@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Grant%2C+A%2E+K%2E%22">Grant, A. K.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Carlson%2C+K%2E%22">Carlson, K.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Simpson%2C+M%2E+F%2E%22">Simpson, M. F.</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Radioanalytical+%26+Nuclear+Chemistry%22">Journal of Radioanalytical & Nuclear Chemistry</searchLink>. May2019, Vol. 320 Issue 2, p309-322. 14p. 1 Color Photograph, 4 Diagrams, 6 Charts, 5 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Fluidized+reactors%22">Fluidized reactors</searchLink><br /><searchLink fieldCode="DE" term="%22Radioactive+wastes%22">Radioactive wastes</searchLink><br /><searchLink fieldCode="DE" term="%22Melting+points%22">Melting points</searchLink><br /><searchLink fieldCode="DE" term="%22Salt%22">Salt</searchLink><br /><searchLink fieldCode="DE" term="%22Chlorides%22">Chlorides</searchLink><br /><searchLink fieldCode="DE" term="%22Fused+salts%22">Fused salts</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Dechlorination of eutectic LiCl–KCl based electrorefiner (ER) salt is reported via ion-exchange reaction with protonated ultrastable Y-type (USHY) zeolite bound into mechanically fluidized 45–250 μm diameter particles. Evidence of exchange of cations from the salt (Li+, K+, and fission product cations) into the zeolite lattice replacing H+ ions was found based on a change in unit cell size, ICP-MS, XRD and TEM–EDS in addition to detection of HCl off gas. Ion exchange reaction was carried out at 625 and 650 °C, temperatures above the melting point of eutectic LiCl–KCl. Experiments were carried out to optimize zeolite drying temperature, estimate maximum ion-exchange capacity, and determine the thermal stability of USHY zeolite. The results indicate over 90% dechlorination can be achieved without zeolite structure collapse at 625 °C. This provides a promising route to stabilizing waste from radioactive chloride salts into dechlorinated waste forms for permanent geologic disposal. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Radioanalytical & Nuclear Chemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s10967-019-06476-y Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 14 StartPage: 309 Subjects: – SubjectFull: Fluidized reactors Type: general – SubjectFull: Radioactive wastes Type: general – SubjectFull: Melting points Type: general – SubjectFull: Salt Type: general – SubjectFull: Chlorides Type: general – SubjectFull: Fused salts Type: general Titles: – TitleFull: Dechlorination of molten chloride waste salt from electrorefining via ion-exchange using pelletized ultra-stable H-Y zeolite in a fluidized particle reactor. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wasnik, M. S. – PersonEntity: Name: NameFull: Grant, A. K. – PersonEntity: Name: NameFull: Carlson, K. – PersonEntity: Name: NameFull: Simpson, M. F. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2019 Type: published Y: 2019 Identifiers: – Type: issn-print Value: 02365731 Numbering: – Type: volume Value: 320 – Type: issue Value: 2 Titles: – TitleFull: Journal of Radioanalytical & Nuclear Chemistry Type: main |
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