Synthesis and characterization of some chelating polymers bearing maleic acid and/or sodium maleate moieties for removal of some toxic heavy metal ions

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• 作者：Mahmoud Abd El-Ghaffar (1)
  Noha Elhalawany (1)
  Elsayed Ahmed (1)
  Magdy Sabaa (2)
  
• 关键词：Chelating copolymers ; Adsorbents ; Emulsion copolymerization ; Metal ion uptake
• 刊名：Clean Technologies and Environmental Policy
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：15
• 期：6
• 页码：1013-1021
• 全文大小：
• 作者单位：Mahmoud Abd El-Ghaffar (1)
  Noha Elhalawany (1)
  Elsayed Ahmed (1)
  Magdy Sabaa (2)
  
  1. Polymers and Pigments Department, National Research Center, Dokki, Cairo, Egypt
  2. Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
  
• ISSN：1618-9558

文摘

Chelating copolymers (CCPs) bearing carboxylic acid and/or carboxylate moieties based on ethyl methacrylate in the absence and in the presence of divinyl benzene as a crosslinker were prepared via new emulsion copolymerization route. The obtained CCPs were characterized by (FT-IR, 1HNMR, TEM, GPC, and TGA). Furthermore, the prepared CCPs have been tested as adsorbents for various toxic heavy metal ions. They showed higher sorption capacities toward transition metal ions such as (Co(II) and Ni(II)) and much less sorption capacity for (Cd(II) and Pb(II)). The optimum conditions for metal ion uptake such as time, pH, and comonomer concentrations of different weight percent (wt%) as well as the sorption kinetics were investigated. A high recovery about 903% was obtained using HCl as an eluent agent.