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KMID : 0385520090220010092
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Analytical Science & Technology
2009 Volume.22 No. 1 p.92 ~ p.100
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Adsorption of uranium(Ⅵ), calcium(Ⅱ), and samarium(Ⅲ) ions on synthetic resin adsorbent with styrene hazardous materials
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Kim Joon-Tae
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Abstract
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Azacrown resins were synthesized by mixing 1-aza-12-crown-4 macrocyclic ligand into styrene (2th petroleum in 4th class hazardous materials) divinylbenzene (DVB) copolymer with crosslinkage of 1%, 2%, 5% and 10% by substitution reaction. The synthesis of these resins was confirmed by content of chlorine, element analysis, thermogravimetric analysis (TGA), surface area (BET), and IR-spectroscopy. The effects of pH, time, crosslinkage of resins and dielectric constant of solvent on adsorption of metal ions by resin adsorbent were investigated. Metal ions showed a great adsorption over pH 3 and adsorption equilibrium of metal ions was about two hours. In addition, adsorptive selectivity of metals on the resin in ethanol solvent was increased in the order of UO₂2+＞Ca2+＞Sm3+ ion and adsorption of uranium ion was decreased with increase of crosslinkage such as 1%, 2%, 5% and 10% and was inversely proportional to the order of dielectric constant of solvents.
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KEYWORD
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1-aza-12-crown-4, macrocyclic ligand, crosslinkage, styrene divinylbenzene (DVB)
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