ION EXCHANGE ADSORPTION PROPERTIES OF CRYSTALLINE COMPOUND OF ANATASEAND RUTILE/

The crystallinely hydrous titanium dioxide, H4Ti3O8, was synthesized b y heating amorphous titanium hydroxide at 80 degrees C for 12 hours. X RD, TGA and PH titration were employed to characterize the prepared cr ystal. The studies on acid, base and radiation stabilities of the crys tal demonstrate the reliability of this type of ion exchange material for treating radioactive nuclear wastes. The uranyl ions are so much p referred by the crystal that the complexation of uranyl and chloride i ons in solution phase is completely destructed. The uptake of uranium on the crystal is remarkably sensitive to the solution pH. Plot of log /K-D of the uranium on the crystal vs. equilibrium pH generates a seri es of lines with the mean slope of 0.40, which is the verification of sophisticated loading mechanisms in H/UO22+ reaction.