Method for removing 99Tc from liquid level waste in spent fuel reprocessing

摘要

A method for removing 99Tc from liquid intermediate level waste (ILW) of spent fuel reprocessing, which comprises adding HNO3 to ILW until the pH reaches 2 to decompose carbonate, The removed ILW is transferred to a tank containing mild steel wool (msw) for 4 to 48 hours, the ILW and MS wool are subjected to a separation step, the 99Tc-free supernatant liquid is discharged, and the corrosion product (gate A method as described above comprising the steps of holding a site (FeOOH/magnetite), subjecting the corrosion product to a vitrification step, and storing the vitrified 99Tc-bearing waste.