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Evaluation of Removal Behavior of Cesium in Contaminated Soil Based on Speciation Analysis
Takahiro Sasaki1,2,3, Ayano Yamashita3, Norifumi Terui4
1Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Kanazawa, Tobetsu, Ishikari, Hokkaido, 061-0293, Japan.
Abstract:
The removal efficiency of Cs from contaminated soil depends on its chemical species bound with the soil components. Therefore, in this study, we observed the elution behavior of Cs based on speciation analysis in a Cs removal experiment conducted on contaminated soils. The treatment method was optimized using simulated contaminated soil and applied to actual contaminated soil on a large scale as well. The elution rate of Cs was approximately 50% or more in both actual and simulated contaminated soil using the optimized treatment method. From the obtained results, a robust treatment method using an eluting reagent and a magnetic adsorbent with low energy costs is proposed. Additionally, the usefulness of speciation analysis in decontamination studies was confirmed.
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