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Adsorption of Copper(II) from an Wastewater Effluent of Electroplating Industry by Poly(ethyleneimine)-Functionalized Silica

文献类型： 外文期刊

作者： Xu, Hongbo 1 ; Liu, Dan-dan 1 ; He, Lu 1 ; Liu, Na 2 ; Ning, Guiling 3 ;

作者机构： 1.Univ Sci & Technol Liaoning, Coll Chem Engn, Anshan 114051, Peoples R China

2.Shanghai Acad Agr Sci, Inst Hort Res, Shanghai Key Lab Protected Hort Technol, Shanghai 201106, Peoples R China

3.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China

4.Dalian Univ Technol, Sch Chem Engn, Dalian 116012, Peoples R China

关键词： Copper;Removal;Poly(ethyleneimine);Adsorption;Electroplating wastewater

期刊名称：IRANIAN JOURNAL OF CHEMISTRY & CHEMICAL ENGINEERING-INTERNATIONAL ENGLISH EDITION （ 影响因子：0.759； 五年影响因子：1.018 ）

ISSN： 1021-9986

年卷期： 2015 年 34 卷 2 期

页码：

收录情况： SCI

摘要： The poly(ethyleneimine)-functionalized silica has been developed successfully as an effective adsorbent for the adsorption removal of Cu(II) ions from electroplating wastewater. The influences of pH, contact time and initial concentration of Cu(II) ions on the adsorption capacity and the effect of adsorbent dosage on the removal efficiency of Cu(II) ions from electroplating wastewater were investigated. The adsorption behaviors and mechanisms of Cu(II) ions onto poly(ethyleneimine)-functionalized silica were also studied in details. The uptake of Cu(II) ions on poly(ethyleneimine)-functionalized silica was constant in the range of pH 4-8. The poly(ethyleneimine)-functionalized silica offered a fast rate for the adsorption of Cu(II) ions and reached an equilibrium state within 30 min. The results of static batch experiment indicated that the maximum static adsorption capacity of Cu(II) ions on PEI-functionalized silica was 31.8 mg/g. The adsorption process was found to follow a pseudo-second-order rate mechanism. Langmuir adsorption isotherms fitted well in the experimental data. The optimum dosage of poly(ethyleneimine)-functionalized silica for the removal Cu(II) ions from electroplating wastewater was 10 g/L. The removal efficiency of Cu(II) ions from electroplating wastewater was 92.6%. Some scale-up experiments were also investigated to offer the reference for water treatment. The results showed that poly(ethyleneimine)-functionalized silica could be employed as an effective adsorbent for the removal of Cu(II) ions from electroplating wastewater.

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