The nanostrutured mixed oxide CeO2-Mn2O3 have been synthesised at low temperature (350°C) by the combustion of gel prepared from polyvinyl alcohol (PVA), Ce(NO3)4 and Mn(NO3)3, CeO2-Mn2O3 characterizations were examined by X-ray diffraction (XRD), scanning electron microscopy (SEM) and BET (Brunaure-Emmet- Teller) measurements. The phase of CeO2-Mn2O3 with large specific surface area 65.3 m2/g was obtained at 350°C for 2 hours. The nanostructured CeO2-Mn2O3 has been investigated for removing iron, manganese, arsenic and ammoniac from water. The sorption characteristics of the nanostrutured CeO2-Mn2O3 for AS(V), NH4+, Fe(III), Mn(II) according to the langmuir isotherm. The sorption capacities of nanostrutured CeO2-Mn2O3 are 57.10 mg As(V)/g
154.54 mg NH4+/g
72.97 mg Fe(III)/g
60.27 Mn(II)/g.