METHOD TO EXTRACT RADIONUCLIDE Co FROM LIQUID RADIOACTIVE WASTES OF NPP Russian patent published in 2013 - IPC G21F9/12 

FIELD: power engineering.

SUBSTANCE: invention relates to the technology of handling liquid radioactive wastes (LRW) of nuclear power plants (NPP) and may be used in process of recycling of floor drains and still bottoms of NPP LRW for removal of the radio nuclide ⁶⁰Co with its concentration in the solid phase. The method to extract the radionuclide ⁶⁰Co from liquid radioactive wastes of the NPP includes introduction of iron cations (III) and nickel cations (II) into the solution at the mole ratio of 1:1 and potassium ferrocyanide at the mole ratio with iron cations (III) from 2:1 to 4:1.

EFFECT: invention makes it possible to simpligy the process of extraction of radionuclide ⁶⁰Co from NPP LRW, to reduce time of its performance.