| 초록 |
To prevent the corrosion of materials in make-up water storage tank, there are various methods to remove the dissolved oxygen (DO) in nuclear power plant (NPP). Recently, to solve this problems, membrane-based oxygen removal system (MORS) is preferred since that method has low cost, environmental process, and small space. In this study, we modified the hollow fiber membrane by radiation and supported metal catalyst to obtain the better efficiency than MORS. Polypropylene (PP) hollow fiber membrane fabrics were supplied by Membrana. To prepare the monomer grafting copolymer, PP hollow fiber membrane fabrics and various amount of glycidylmetacrylate (GMA) were simultaneously irradiated by γ-ray from Co-60 under atmospheric pressure and ambient temperature. After grafting reaction, the monomer and homopolymer were removed with tetrahydrofuran (THF), and GMA-grafted membrane was aminated using ethylenediamine (EDA) under atmospheric pressure and 60℃ for 24 hr. Finally, chelate was formed with palladium (Pd) as metal catalyst.
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