Adsorption of Pb2+ and Zn2+ from aqueous solutions by sulfured orange peel

作者：Liang, Sha; Guo, Xueyi^*; Tian, Qinghua

来源：Desalination, 2011, 275(1-3): 212-216.

DOI：10.1016/j.desal.2011.03.001

• Sulfured orange peel
• Adsorption
• Pb2+
• Zn2+

In this study, sulfured orange peel (MOP) was used as adsorbent to investigate its adsorption behaviors of Pb2+ and Zn2+ from aqueous solutions. The effects of solution pH, adsorption time and metal ion concentration on adsorption were studied in batch experiments. Both adsorption kinetics of Pb2+ and Zn2+ proceeded rapidly and could be well described by pesudo-second-order equation. The maximum Langmuir adsorption capacities for Pb2+ and Zn2+ removal by MOP were evaluated as 164 and 80 mg/g, respectively. A binary mixture of Pb2+ and Zn2+ was studied by using a packed column, suggesting that effective mutual separation and pre-concentration of Pb2+ away from Zn2+ using MOP could be satisfactory achieved. The results indicate that MOP could be employed as an effective low-cost adsorbent for adsorption and separation of Pb2+ and Zn2+ from wastewater.

• 出版日期2011-7-15
• 单位中南大学