Sorption Properties and Some Separations of Divalent Transition Metal Ions on Crystalline Hydrous Titanium Dioxide Fibers

Abstract The sorption of some divalent transition metal ions and strontium ion on crystalline hydrous titanium dioxide fibers has been studied. Crystalline hydrous titanium dioxide fibers were obtained by extracting potassium ions from potassium tetratitanate (K2Ti4O9) fibers; their composition was TiO2 -0.6H2O. It was confirmed that these metal ions were sorbed on this material by an ion-exchange reaction, and their selectivity series Cu > Sr > Zn > Mn > Co > Ni was established. Large separation factors were obtained between copper ion and other divalent transition metal ions, and some mutual separations have been achieved on a column containing crystalline hydrous titanium dioxide fibers.