| Autor: |
Hoang Lan Nguyen, Quynh Luong Pham, Van Chinh Nguyen, Xuan Huu Le, Huu Anh Vuong, Thu Trang Nguyen, Cao Nguyen Luu |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Nuclear Science and Technology. 7:28-36 |
| ISSN: |
1810-5408 |
| DOI: |
10.53747/jnst.v7i1.116 |
| Popis: |
The development of cesium selective adsorbent is urgent subject for the decontamination of intermediate and high level water from nuclear facilities especially in nuclear accidents. For the selective adsorption and stable immobilization of radioactive cesium, K-Ni- hexacyanoferrate (II) loaded zeolite (FCzeolite) (synthesized zeolite of Hanoi University of Science and Technology) were prepared by impregnation/precipitation method. The ion exchange equilibrium of Cs+ for composites FC-zeolite was attained within 5 h and estimated to be above 97% in Cs+ 100mg/l solution at pH: 4-10. Ion exchange capacity of Cs+ ions (Qmax) for FC-zeoliteX was reached 158.7 and 98.0 mg/g in pure water and sea water respectively. Those values for FC-zeolite A was 103.1 and 63.7 mg/g. Decontamination factor (DF) of FC-zeolite X for 134Cs was 149.7 và 107.5 in pure water and sea water respectively. Initial radioactivity of 134Cs ion solution infect to decontamination factor. KNiFC-zeolite X after uptaked Cs (CsFC- zeolite X) was solidificated in optimal experimental conditions: Mixing CsFC-zeolite X with additive of Na2B4O7 (5%), temperature calcined 900oC for 2h in air. Solid forms was determined some of parameters: Cs immobilization, mechanical stability, volume reduction after calcination (%) and leaching rate of Cs+ ions in solution. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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