Organic-inorganic membranes were obtained by modification of polymer
microfiltration membrane with inorganic ion-exchangers, which form secondary
porosity inside macroporous substrate (zirconium hydrophosphate) or
simultaneously in the macroporous substrate and active layer, depending of
the particle size (from ?50 nm up to several microns). Precipitation of the
inorganic constituent is considered from the point of view of
Ostwald-Freundlich equation. Such processes as pressing test in deionized
water and filtration of corn distillery at 1-6 bar were investigated.
Theoretical model allowing to establish fouling mechanism, was applied. It
was found that the particles both in the substrate and active layer prevent
fouling of the membrane with organics and provide rejection of colloidal
particles.
Formation of Zirconium Hydrophosphate Nanoparticles and Their Effect on Sorption of Uranyl Cations
