In the present work, a study of the kinetics of adsorption of Cs+, Co2+, and Sr2+ on four hydrous titanium oxides, prepared in different media, and designated as Ti- I, Ti- II, Ti- III, and Ti- IV, was carried out. In the aqueous medium, the internal diffusion coefficients, D-i for Cs+ were found to be equal to 3.7 x 10(-9), 3.7 x 10(-9), 2.3 x 10(-9), and 1.5 - 10(-9) cm(2)/s, in Ti-I, Ti-II, Ti-III, and Ti- IV, respectively. For Co (2+) and Sr2+, these values are equal to 0.96 x 10(-9) and 0.64 x 10(-9) cm(2)/s, respectively for Ti-IV. In Ti-IV, Di for all ions generally increases on adding methanol or propanol. This is probably due to greater dehydration, leading to faster ion diffusion, and, hence, to a decrease of ion mobility due to stronger interaction with the surface. In all media in Ti- IV, the order: Di(Cs+). Di(Co2+) >= Di(Sr2+) was found which is due to a stronger interaction of the bivalent ions with the exchange sites.