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KMID : 1024520150240010047
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Journal of the Environmental Sciences
2015 Volume.24 No. 1 p.47 ~ p.53
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Removal Characteristics of Cu(II) ion in Aqueous Solution by Solid-Phase Extractant Immobilized D2EHPA and TBP in PVC
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Kam Sang-Kyu
Lee Song-Woo
Lee Min-Gyu
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Abstract
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Removal characteristics of Cu(II) ions by solid-phase extractant immobilized D2EHPA and TBP in PVC were investigated. Cu(II) ion concentrations in the solution and removal capacity of Cu(II) ion according to operation time were compared. The lower the initial concentration of Cu(II) ion in aqueous solution was, the removal capacity of Cu(II) ion by solid-phase extractant was increased relatively. The bigger the initial concentration of Cu(II) ion was, the removal capacity of Cu(II) ion was increased relatively. The pseudo-second-order kinetics according to operation time was showed more satisfying results than the pseudo-first-order kinetics for the removal velocity of Cu(II) ion. The removal capacity of Cu(II) ion was 0.025 mg/g in aqueous solution of pH 2, but the removal capacity of Cu(II) ion was increased to 0.33 mg/g mg/g in aqueous solution of pH 4 according to increasing pH.
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KEYWORD
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Copper, Solid-phase extractant, Di-(2-ethylhexyl) phosphoric acid (D2EHPA), Tri-butyl-phosphate (TBP), Polyvinyl chloride (PVC)
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