In this work, the oxide phase of the spinel structure Li1.33Mn1.67O4 4 partially replaced manganese with Mg2+ ions, and the effect of lithium manganese oxides on adsorption properties was studied. Li1.33MgxMn(1.67-x)O4 oxide with a spindle structure doped with Mg2+ ion was synthesized by sol-gel method and calcined at 600 °C for 5 hours. Experiments were conducted to study the effect of pH, gelation time, adsorbent dose, contact time and Li+ concentration. The synthesized oxides of Li1.33MgxMn(1.67x)O4 were described using X-ray radiation. The characteristics of Li1.33MgxMn(1.67x)O4 were studied by X-ray diffraction (XRD).