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Magnetic materials of magnesium ferrite (MgFe2O4) based on natural iron sand has been successfully prepared as an adsorbent of Pb ions. This material was synthesized by co-precipitation method with natural iron and Mg(CH3COO)2.4H2O as precursor powders which were mixed with 2.0 M NH4OH at a synthesis temperature of 50, 70 and 90 °C. The material characterizations were carried out using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Vibrating Sample Magnetometer (VSM). The XRD pattern showed that MgFe2O4 has single phase and its crystallite size increased and the powder density decreased as the temperature increased. The optimum temperature for the synthesis of MgFe2O4 was found at 50 °C, when the saturation magnetization and coercivity were at the highest values of 51.73 emu/g and 308 Oe, respectively. The result also showed that MgFe2O4 as an adsorbent of Pb ions has adsorption capacity of 143.07mg/g and removal efficiency of 97.3%.

The effect of temperature on synthesis of MgFe2O4based on natural iron sand by Co-precipitation method as adsorbent Pb ion

The effect of temperature on synthesis of MgFe₂O₄based on natural iron sand by Co-precipitation method as adsorbent Pb ion