Abstract <p>The sorption and desorption behavior of divalent ions (Cu²⁺, Mn²⁺, Co²⁺, Ni²⁺) on amorphous titanium phosphate has been studied. The sorption/desorption equilibrium is shown to be largely determined by the solvated state of heavy metal cations, and selectivity series are constructed. The degree of desorption exceeds 99.9% in all cases regardless of the degree of saturation of the sorbent with metal cations. When the sorbent is used in many cycles, the efficiency of sorption/desorption processes decreases because of its dehydration due to sorbent hydrolysis, which is 2.6 × 10^–3 mg g^–1 h^–1. The efficiency of sorption/desorption of the ions from multicomponent solutions is shown.</p>