Abstract
Solid forms immobilizing nuclides were prepared from Cs-mordenite and Sr-A zeolite by calcination at 1,200°C for 1 h. Cesium and strontium were fixed in the crystal phases of pollucite (CsAlSi2O6) and Sr-feldspar (SrAl2Si2O8), respectively. The leachability of Cs and Sr was rather high in 0.1 M HNO3 leachant, while the leached percentage was lowered in 0.1 M NaOH, 0.1 M NaCl and deionized water. The recrystallized phases formed on the surface after leaching in 0.1 M NaOH resulted in the lowering of the leachability of Cs and Sr. The thermal conductivities (k) of solid forms of Cs-MOR, Sr-A, (Cs,Sr)-A and Al-matrix (calcined Cs-mordenite dispersed in Al metal matrix) were determined to be 0.83-1.00, 0.55-0.64, 0.83-1.01 and 47 W/(m·K), respectively. The central temperature of solid forms with the same diameter was in the order of Sr-A > Cs-MOR > Al-matrix.
| Original language | English |
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| Pages | 615-622 |
| Number of pages | 8 |
| Publication status | Published - 2003 Dec 1 |
| Event | International Conference - Nuclear Energy for New Europe 2003, Proceedings - Portoroz, Slovenia Duration: 2003 Sep 8 → 2003 Sep 11 |
Other
| Other | International Conference - Nuclear Energy for New Europe 2003, Proceedings |
|---|---|
| Country/Territory | Slovenia |
| City | Portoroz |
| Period | 03/9/8 → 03/9/11 |
ASJC Scopus subject areas
- Nuclear Energy and Engineering