Abstract
Pb(II) is a typical toxin in industrial wastewater, which has significant pollution risk for drinking water sources. Magnetic manganese ferrites are a proven recyclable adsorption material on account of their excellent ferromagnetism. In this study, manganese ferrites adsorbent synthesized from ferromanganese ore were used for Pb(II) removal from acid wastewater. Thermodynamic calculation and adsorption tests were conducted. Under optimal conditions, the removal ratio of Pb(II) reached 99.4% when initial Pb(II) concentration was 10 mg/L (pH = 5), and the residual Pb(II) concentration was reduced to lower than 0.1 mg/L. The results indicated that the synthetic manganese ferrites were an excellent magnetic adsorbent, which was easy to be separated and recycled. The adsorption mechanism was explored by isothermal adsorption analysis using φ-pH and ICP.
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