Review on Selection and Experiment Method of Commonly Studied Simulated Radionuclides in Researches of Nuclear Waste Solidification
Table 4
The application conditions and advantages of the simulated 137Cs.
Simulants
Solidified body
Experimental method
Advantages
CsNO3 or CsCl
Cementitious materials
Dissolved in deionized water and directly mixed in the solidified body for immobilization (<100°C)
Stable at low temperature, soluble in water, easy to obtain
CsOH
Pollucite
Hydrothermal reaction (100–200°C)
OH- in CsOH can be converted to H2O by reaction; no other elements were introduced into pollucite except for Cs
Cs2CO3 or CsNO3
Glass or ceramic
Melting method (1000–1350°C)
Decompose at high temperature, releasing Cs2O for the solid-phase reaction; CsOH is not used because it is strongly alkaline and will react violently with the metal container