Experimental study on cesium immobilization in struvite structures
Copyright © 2015 Elsevier B.V. All rights reserved..
Ceramicrete, a chemically bonded phosphate ceramic, was developed for nuclear waste immobilization and nuclear radiation shielding. Ceramicrete products are fabricated by an acid-base reaction between magnesium oxide and mono potassium phosphate that has a struvite-K mineral structure. In this study, we demonstrate that this crystalline structure is ideal for incorporating radioactive Cs into a Ceramicrete matrix. This is accomplished by partially replacing K by Cs in the struvite-K structure, thus forming struvite-(K, Cs) mineral. X-ray diffraction and thermo-gravimetric analyses are used to confirm such a replacement. The resulting product is non-leachable and stable at high temperatures, and hence it is an ideal matrix for immobilizing Cs found in high-activity nuclear waste streams. The product can also be used for immobilizing secondary waste streams generated during glass vitrification of spent fuel, or the method described in this article can be used as a pretreatment method during glass vitrification of high level radioactive waste streams. Furthermore, it suggests a method of producing safe commercial radioactive Cs sources.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2016 |
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Erschienen: |
2016 |
Enthalten in: |
Zur Gesamtaufnahme - volume:302 |
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Enthalten in: |
Journal of hazardous materials - 302(2016) vom: 25. Jan., Seite 241-249 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Wagh, Arun S [VerfasserIn] |
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Links: |
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Themen: |
Ceramicrete |
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Anmerkungen: |
Date Completed 04.03.2016 Date Revised 15.08.2017 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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doi: |
10.1016/j.jhazmat.2015.09.049 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM253773318 |
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520 | |a Copyright © 2015 Elsevier B.V. All rights reserved. | ||
520 | |a Ceramicrete, a chemically bonded phosphate ceramic, was developed for nuclear waste immobilization and nuclear radiation shielding. Ceramicrete products are fabricated by an acid-base reaction between magnesium oxide and mono potassium phosphate that has a struvite-K mineral structure. In this study, we demonstrate that this crystalline structure is ideal for incorporating radioactive Cs into a Ceramicrete matrix. This is accomplished by partially replacing K by Cs in the struvite-K structure, thus forming struvite-(K, Cs) mineral. X-ray diffraction and thermo-gravimetric analyses are used to confirm such a replacement. The resulting product is non-leachable and stable at high temperatures, and hence it is an ideal matrix for immobilizing Cs found in high-activity nuclear waste streams. The product can also be used for immobilizing secondary waste streams generated during glass vitrification of spent fuel, or the method described in this article can be used as a pretreatment method during glass vitrification of high level radioactive waste streams. Furthermore, it suggests a method of producing safe commercial radioactive Cs sources | ||
650 | 4 | |a Journal Article | |
650 | 4 | |a Ceramicrete | |
650 | 4 | |a Cesium immobilization | |
650 | 4 | |a Chemically bonded phosphate ceramic | |
650 | 4 | |a Struvite | |
650 | 4 | |a Vitrification | |
700 | 1 | |a Sayenko, S Y |e verfasserin |4 aut | |
700 | 1 | |a Shkuropatenko, V A |e verfasserin |4 aut | |
700 | 1 | |a Tarasov, R V |e verfasserin |4 aut | |
700 | 1 | |a Dykiy, M P |e verfasserin |4 aut | |
700 | 1 | |a Svitlychniy, Y O |e verfasserin |4 aut | |
700 | 1 | |a Virych, V D |e verfasserin |4 aut | |
700 | 1 | |a Ulybkina, Е А |e verfasserin |4 aut | |
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