METHOD OF EXTRACTING RADIONUCLIDES FROM WATER SOLUTIONS Russian patent published in 2008 - IPC G21F9/12 

FIELD: chemistry.

SUBSTANCE: invention pertains to sorption technologies of extracting radionuclides from water media and can be used for purifying waste solutions of radiochemical production, natural water solutions from dangerous radioactive contaminations by extracting them with a sorbent. The proposed method provides for extracting radionuclides of uranium, plutonium, caesium, strontium from water solutions through sorption by using a sorbent from a non-magnetic fraction of a product of recycling metallurgic slag, containing the following: calcium silicate Ca₂SiO₄, iron-lithium oxide Li_9,28Fe_21,34O₃₂, coesite SiO₂, ferrous grossularite Ca₃Al_1,332Fe_0,668Si₃O₁₂, ringwoodite Fe₂SiO₄, sodium aluminium silicate Na_14,88Al_15,26Si_32,74O₉₆. The process is carried out at pH not less than 2 and final pH value not more than 14.

EFFECT: extraction of radionuclides from water solutions, with use of a sorbent made from cheap inorganic material, which has high distribution coefficient relative the whole range of radionuclides.

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