Sorption of Sc(Ⅲ) on Phosphorus-containing Cation Exchangers

摘要

Kinetics of Sc(Ⅲ) sorption from hydrochloric acid solutions on KRF-20t-60 cation exchanger is studied. The experimental data are analyzed in terms of the gel and film kinetic models. The Sc(Ⅲ) diffusion coefficient in the resin phase is estimated. Static and dynamic sorption data are obtained on Sc(Ⅲ) sorption from various process solutions on KRF-20t-60, PA-1, AFI-22 ion exchangers, and also on ion exchangers supported on polyacrylonitrile-based fibrous material. Desorption of Sc(Ⅲ) from KRF-20t-60 is also studied.