As no ionite
or membrane filters are now in use in Estonia for special radionuclides removal, there are no data on the radioactivity of used resins or membranes yet, but it is very likely that these solid residues will also exceed the EU clearance levels.
as these cause ionite
inactivation and fast fouling of the membrane.
Thus, it may be assumed that, in the conjoined presence of Re(VII) and of Mo(VI) in neutral and alkaline media, Re(VII) can be separated from Mo(VI) with use of ionites
To compare the sorption properties of the received samples with industrial ionites
the total static exchange capacity of these materials has been determined towards to ions of S[O.sub.4.sup.2-], [Na.sup.+] and [Fe.sup.3+] ions, values of which are provided in table 2.
While applying for the inorganic ionites
, the ion exchange is the ability or property of solid phase to exchange ions with liquid or gaseous electrolytes without destruction of the original crystal structure of zeolite (Ceolity 2003).
PHYSICAL AND CHEMICAL PROPERTIES OF SYNTHESIZED IONITES
Parameters Unit of Phosphate cation- measure exchange resin Dampness % 15-20 Specific volume of bulked up ml/g 3.2-3.4 ion-exchange resin Static exchange capacitance mg-ecv/g on 0.1 N solutions of: caustic soda 3.8-7.5 muriatic acid - sodium chloride 0.8 Chemical stability.