Preparation of EDTA-immobilized fiber by electron beam irradiation for transition metal adsorption
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초록
내용
Ethylenediaminetetraacetic acid (EDTA) is one of the powerful chelating agent and is widely used for treatment of heavy metal poisoning and chemical titration. However It is very difficult to recover the EDTA dissolved in water. In this study, we studied on the preparation of adsorbent having EDTA-like molecular structure that can be renewable. EDTA-immobilized fiber prepared in three steps: (ⅰ) graft polymerization of glycidyl methacrylate (GMA) onto polypropylene fiber using electron beam irradiation; and (ⅱ) amination of GMA grafted PP with diethylenetriamine ; (ⅲ) treating with sodium chloroacetate. Scanning electron microscope, thermogravimetry analysis, fourier transform infrared spectroscopy, elemental analysis were utilized for characterization of EDTA-immobilized fiber. Adsorption efficiency of transition metal ions on prepared adsorbent was analyzed by inductively coupled plasma mass spectrometry.