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The demand for cost effective adsorbents is widespread recognition through drinking water–liquid wastes treatment technologies. The novel ion exchangers based on individual and mixed hydrous oxides (ZrO₂·xH₂O, Fe₂O₃·Al₂O₃·xH₂O and Fe₂O₃·2Al₂O₃·xH₂O) have been obtained by sol–gel method from easily available and cheap raw materials and employed for adsorption of H₂PO₄⁻ from aqueous systems. High specific surface area of the materials was found: 404, 396 and 388m²g⁻¹ for ZrO₂·xH₂O, Fe₂O₃·Al₂O₃·xH₂O and Fe₂O₃·2Al₂O₃·xH₂O correspondingly. Adsorbents were characterized by potentiometric titration (anion exchange and cation exchange capacities (on H and OH⁻ ions)), zeta-potential and pore volume studies. pH effect of phosphate ions sorption on the double hydroxides of Fe and Al was stronger than on the hydrated zirconium dioxide, however, all investigated sorbents are capable …