PL417953A1 - Method for vitrification of used sorbents with high-active radicals inbuilt in their structure by sol-gel method - Google Patents
Method for vitrification of used sorbents with high-active radicals inbuilt in their structure by sol-gel methodInfo
- Publication number
- PL417953A1 PL417953A1 PL417953A PL41795316A PL417953A1 PL 417953 A1 PL417953 A1 PL 417953A1 PL 417953 A PL417953 A PL 417953A PL 41795316 A PL41795316 A PL 41795316A PL 417953 A1 PL417953 A1 PL 417953A1
- Authority
- PL
- Poland
- Prior art keywords
- sorbent
- cesium
- hour
- vitrification
- sol
- Prior art date
Links
- 239000002594 sorbent Substances 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 4
- 238000003980 solgel method Methods 0.000 title abstract 2
- 238000004017 vitrification Methods 0.000 title abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 abstract 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 abstract 2
- 229920006395 saturated elastomer Polymers 0.000 abstract 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 abstract 2
- 235000010323 ascorbic acid Nutrition 0.000 abstract 1
- 229960005070 ascorbic acid Drugs 0.000 abstract 1
- 239000011668 ascorbic acid Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 229910052792 caesium Inorganic materials 0.000 abstract 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 abstract 1
- TVFDJXOCXUVLDH-RNFDNDRNSA-N cesium-137 Chemical compound [137Cs] TVFDJXOCXUVLDH-RNFDNDRNSA-N 0.000 abstract 1
- 239000012467 final product Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 230000009477 glass transition Effects 0.000 abstract 1
- 229910001960 metal nitrate Inorganic materials 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000010344 sodium nitrate Nutrition 0.000 abstract 1
- 239000004317 sodium nitrate Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Przedmiotem zgłoszenia jest sposób zeszkliwiania zużytego sorbentu z osadzonym surogatem izotopu cezu-137 jako przykład możliwości zastosowania metody zol-żel w utylizacji wysoko aktywnych pierwiastków HL w postaci szkieł krzemionkowych. Sposób polega na tym, że do roztworu tetraetoksysilanu (TEOS) dodaje się kwasu askorbinowego. Po godzinie mieszania do próbki dodaje się sorbentu z osadzonym cezem i miesza kolejną godzinę. Następnie dodaje się azotanu metalu obniżającego temperaturę zeszklenia, korzystnie azotanu sodu i miesza 60 minut w tej samej temperaturze. Otrzymaną masę odparowuje się w wyparce próżniowej pod obniżonym ciśnieniem przez godzinę, a następnie suszy przez 24 h w temperaturze 140°C. Następnie próbkę poddaje się obróbce termicznej w 900°C. Otrzymany produkt końcowy w temperaturze 900°C jest szkłem krzemionkowym z na trwale wbudowanym w jego strukturę sorbentem wysyconym cezem. W sposobie zastosowano bezpośrednią syntezę do trwałego wbudowania sorbentu wysyconego radionuklidem w strukturę szkła krzemionkowego z wykorzystaniem surogatu izotopu Cs137 jako pierwiastka modelowego dla pierwiastków HL.The subject of the application is a method of vitrification of used sorbent with embedded cesium-137 isotope surrogate as an example of the possibility of using the sol-gel method in the utilization of highly active HL elements in the form of silica glasses. The method consists in adding ascorbic acid to the tetraethoxysilane solution (TEOS). After one hour of stirring, the sorbent with deposited cesium is added to the sample and the next hour mixed. The metal nitrate lowering the glass transition temperature, preferably sodium nitrate, is then added and mixed for 60 minutes at the same temperature. The resulting mass is evaporated in a vacuum evaporator under reduced pressure for an hour, and then dried for 24 h at 140 ° C. The sample is then heat treated at 900 ° C. The final product obtained at 900 ° C is silica glass with a cesium-saturated sorbent permanently embedded in its structure. The method uses direct synthesis to permanently incorporate a radionuclide saturated sorbent into the silica glass structure using the Cs137 isotope surrogate as the model element for HL elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL417953A PL234820B1 (en) | 2016-07-14 | 2016-07-14 | Method for vitrification of used sorbents with high-active radicals inbuilt in their structure by sol-gel method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL417953A PL234820B1 (en) | 2016-07-14 | 2016-07-14 | Method for vitrification of used sorbents with high-active radicals inbuilt in their structure by sol-gel method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL417953A1 true PL417953A1 (en) | 2018-01-15 |
| PL234820B1 PL234820B1 (en) | 2020-04-30 |
Family
ID=60937420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL417953A PL234820B1 (en) | 2016-07-14 | 2016-07-14 | Method for vitrification of used sorbents with high-active radicals inbuilt in their structure by sol-gel method |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL234820B1 (en) |
-
2016
- 2016-07-14 PL PL417953A patent/PL234820B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL234820B1 (en) | 2020-04-30 |
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