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Fe3O4 and TiO2 Embedded Sodium Alginate Beads of Composite Adsorbent for Pb(II) Removal

In this study, Fe3O4 and TiO2 nanocomposites embedded sodium alginate (SA) beads were synthesized, which exhibited a robust performance of efficient adsorption in Pb (II) removal. Effects of lead ion concentration, initial pH , Pb (II) of contact time and no Tio2 in mixture on final removal efficiency were also evaluated. The results showed that Pb2+concentration increased from 25 to 200 mg/L, beads of adsorption capacity increased from 25 to 95 mg/g, the optimum pH for adsorption is located at 6.2 and the adsorption balance is around 240 minutes in 298K. The effect of the synthetic materials to add light catalyst is better, and removal efficiency can reach more than 95%.This work provides a practical and high-efficient method for heavy metal removal from water and sediment. Particles can be used to effectively handle containing low concentration of Pb2+ (< 200 mg/L) of water and sediment pollution.