SORPTION-DESCRIPTION PROPERTIES OF TITANIUM PHOSPHATE TOWARDS HEAVY METALS CATIONS

The sorption/desorption behavior of divalent ions (, , , ) on amorphous titanium phosphate is studied. The sorption/desorption equilibrium is shown to be largely determined by the solvated state of heavy metal cations; selectivity series are constructed. Regardless of the degree of saturation of the sorbent with cations of the metals being studied, the desorption degree exceeds 99.9% in all cases. With multi-stage use of the sorbent, the efficiency of sorption/desorption processes is established to decrease because of its dehydration due to hydrolysis of the sorbent, which is 2.6×10 mg·g·h. The efficiency of sorption/desorption of the ions from multicomponent solutions is shown.