Apr 18 – 23, 2010
Casino Conference Centre
UTC timezone

Use of hydrolysis for separation and removal of radionuclides from solution

Apr 22, 2010, 12:00 PM
1h 30m
Gallery (Casino Conference Centre)


Casino Conference Centre

Reitenbergerova 4/95, Marianske Lazne, Czech Republic
Board: SEP.P09
Poster Separation Methods, Speciation Poster Session - Separation Methods, Speciation


Dr Dmitri Davydov (Joint Institute for Power and Nuclear Research)


Behaviour of radionuclides in such processes as sorption, ion-exchange, ultrafiltration, etc., that are used for removal of radionuclides from solution, is largely determined by their speciation in solution. The hydrolysis of metal ions in solution is particularly interesting in that respect, since most of the liquid radioactive wastes are aqueous solutions. The following forms of metal ions (Mez+) occur in aqueous solution as the pH increases from acidic to basic conditions: - hydrated cations (Me(H2O)z+) - mononuclear hydroxocomplexes (Me(OH)qz-q+) - polynuclear hydroxocomplexes (Mep(OH)qpz-q+) - pseudocolloids Each of the above forms possesses specific physico-chemical properties that can be effectively used for separation of radionuclides from solution. It has been shown that using the differences in ability of various metals to form hydroxocomplexes and the differences in behaviour of the above species in sorption and ultrafiltration processes it is possible to develop highly selective methods for extraction of radionuclides from solution, including anionic species.

Primary author

Dr Dmitri Davydov (Joint Institute for Power and Nuclear Research)


Mr Artsiom Radkevich (Joint Institute for Power and Nuclear Research)

Presentation materials