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Adsorption of Pb2+ and Zn2+ from aqueous solutions by sulfured orange peel
Guo Xueyi *,Liang Sha,Tian Qinghua
Central South University
*Correspondence author
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Funding: National Natural Science Foundation（No.50774100）
Opened online:14 December 2010
Accepted by: none
Citation: Guo Xueyi,Liang Sha,Tian Qinghua.Adsorption of Pb2+ and Zn2+ from aqueous solutions by sulfured orange peel[OL]. [14 December 2010] http://en.paper.edu.cn/en_releasepaper/content/4395638
 
 
In this study, sulfured orange peel (MOP) was used as adsorbent to investigate its adsorption behaviors of lead and zinc ions 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 163.93 and 80.06 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 sulfured orange peel could be employed as an effective low-cost adsorbent for adsorption and separation of Pb2+ and Zn2+ from wastewater.
Keywords:Sulfured orange peel; Adsorption; Pb2+; Zn2+
 
 
 

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