10:35 AM - 10:50 AM
[2G05] Rapid Removal of Cesium from Fukushima Contaminated Soil by Hydrothermal Treatment with Multivalent Cations
Keywords:Cesium, Clay Minerals, Soil decontamination, Volume reduction, Cation exchange
The hydrothermal treatment (HTT) process is a newly testing method to desorb Cs from the clays/soils using the subcritical water (SCW) at high temperature. This process is much attractive because of its safety, accessibility, no any secondary waste and low cost. In our study, we clarified the effect of cation species and temperature dependence on the Cs desorption from a 2:1 clay mineral, elucidated the desorption process and discussed the mechanism.