Synthesis and characterization of pollucite: a low-temperature immobilization method for 137Cs

Aiming at radioactive cesium waste treatment, this work report a low-temperature immobilization method to convert Cs-polluted waste into pollucite. Results reveal that pollucite can be synthesized over a wide range of Cs content (36.5–53.2 wt.%) at 500 °C via the CsOH-Zeolite 4A-Silica gel system. T...

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Bibliographic Details
Published inJournal of radioanalytical and nuclear chemistry Vol. 332; no. 2; pp. 467 - 478
Main Authors Feng, Yaxin, Wei, Guilin, Liu, Yi, Zhang, Zhentao, Yan, Meng, He, Xiyang, Miao, Yulong, Yuan, Beilong, Zhang, Yuchuan, Ban, Zihui, Song, Zhanrong, Lu, Xirui
Format Journal Article
LanguageEnglish
Published Cham Springer International Publishing 2023
Springer Nature B.V
Subjects
Aluminum
Cesium
Cesium 137
Cesium isotopes
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Immobilization
Inorganic Chemistry
Leaching
Low temperature
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Silica gel
Silicon
Stability analysis
Surface stability
Synthesis
Waste treatment
Synroc
Leaching test
Cs content
Radioactive cesium
Si/Al ratio
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Summary:Aiming at radioactive cesium waste treatment, this work report a low-temperature immobilization method to convert Cs-polluted waste into pollucite. Results reveal that pollucite can be synthesized over a wide range of Cs content (36.5–53.2 wt.%) at 500 °C via the CsOH-Zeolite 4A-Silica gel system. The synthesized pollucite is composed of lamellar particles (0.8–2.5 μm) along with the agglomerates of small particles (0.1–0.3 μm) and Cs, Al, Si, O elements distribute uniformly on surface. Cs content and chemical stability analysis indicate 99.24% of Cs are immobilized and the leaching rate of Cs is on the order of 10 –3  g/(m 2 ·d). Graphical abstract
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-022-08736-w