螯合树脂对金属离子吸附性能的研究
首发时间:2010-04-18
摘要:研究了自合成枝化聚乙烯亚胺螯合树脂对重金属离子Hg(II)、Zn(II)、Cd(II)、Cu(II)的吸附选择性以及对Hg(II)的吸附机理。结果表明:树脂对Hg(II)、Cu(II)有很好的吸附选择性;树脂对Hg(II)的吸附属于液膜扩散控制机理,等温吸附过程可以用Langmuir方程描述。
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ADSORPTION STUDIES OF CHELATING RESINS FOR HEAVY METAL ION
Abstract:The polyethyleneimine (PEI) chelating resins were systhesized and absorptive selectivity for Hg(II), Cu(II), Zn(II), Cd(II) and the influence of temperature、pH were studied. Static adsorption results show that the resins have excellent absorption and absorptive selectivity for Hg(II), Cu(II). The adsorption isotherms approximately fit the Langmuir or Freundlich equation.
Keywords: Chelating resins heavy metal ion adsorption
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No.4204052731412715****
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