کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1396570 984183 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Removal of metal ions from aqueous solution by chelating polymeric microspheres bearing phytic acid derivatives
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Removal of metal ions from aqueous solution by chelating polymeric microspheres bearing phytic acid derivatives
چکیده انگلیسی

The aim of this study was to investigate the possibility to synthesize new chelating polymeric microspheres owing immobilized biocompatible agent as chelating functional groups and to evaluate their performance in metal ions removal from aqueous solution.The microparticles were synthesized via precipitation polymerization of 4-O-(4-vinylbenzyl)-myo-inositol 1,3,5-orthoformate with ethylene glycol dimethacrylate (EGDMA) and subsequent exhaustive phosphorylation of myo-inositol groups using phosphoric acid.Spherical geometry with monodisperse nature of the polymeric microparticles was confirmed by scanning electron micrographs (SEM) and dimensional analysis. A large surface area of the microspheres provided a maximum interaction of metal ions and the chelating functional groups on the surface. Absorption capacity of the beads for the selected metal ions, i.e., Cu(II), Ni(II), Fe(III), was investigated in detail in aqueous solution at pH 5.0 utilizing UV/Vis spectroscopy. This study showed that the macromolecular systems are very effective in chelating these metal ions and the affinity order of the microbeads toward metal ions is: Fe(III) > Ni(II) > Cu(II).The chelating beads can be easily regenerated by 1.0 M HNO3 with high effectiveness. These features make the synthesized beads a potential candidate for metal ions removal at high capacity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Polymer Journal - Volume 44, Issue 4, April 2008, Pages 1183–1190
نویسندگان
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