Co-immobilization of strontium and cesium in Sr-feldspar-pollucite composite phase ceramics derived from geopolymer by microwave sintering

The ceramic products derived from cesium-strontium co-doped geopolymers ((Cs, Sr)-GP) have been synthesized by microwave sintering to realize the co-immobilization of Cs and Sr. Results show that (Cs, Sr)-GP with various Cs/Sr ratios (2–4) form Sr-feldspar-pollucite composite ceramic, the formation...

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Bibliographic Details
Published inJournal of radioanalytical and nuclear chemistry Vol. 333; no. 10; pp. 4983 - 4993
Main Authors Huang, Pingping, He, Zhijie, Xie, Yupeng, Mai, Yuzhen, Chen, Mingfeng, Hu, Zhitao
Format Journal Article
LanguageEnglish
Published Cham Springer International Publishing 07.08.2024
Springer Nature B.V
Subjects
Ceramics
Cesium
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Fission products
Geopolymers
Hadrons
Heat treatment
Heavy Ions
Immobilization
Inorganic Chemistry
Leaching
Microwave sintering
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Sr-feldspar
Microwave sintering
Radionuclide joint immobilization
Pollucite
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Summary:The ceramic products derived from cesium-strontium co-doped geopolymers ((Cs, Sr)-GP) have been synthesized by microwave sintering to realize the co-immobilization of Cs and Sr. Results show that (Cs, Sr)-GP with various Cs/Sr ratios (2–4) form Sr-feldspar-pollucite composite ceramic, the formation temperatures of monoclinic Sr-feldspar decrease from 1000 ℃ (for Sr-GP) to 800 ℃ (for (Cs, Sr)-GP) with Cs addition. The ceramic product heat treated from the (4Cs, Sr)-GP at 1000 ℃ has a high crystalline and optimal leaching resistance, is considered as an ideal host to immobilization the real fission products containing Cs and Sr.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-024-09666-5