Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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Preparation of PVA gel beads by Immobilization of HTTA and TOPO on PVA as Solid Phase Extractant and Removal Characteristics of Copper Ions from Aqueous Solution

고체상 추출제로서 폴리비닐알콜에 테노일트리플루오로아세톤과 트리옥틸포스핀 옥사이드를 고정화한 폴리비닐알콜 겔비드의 제조와 수중의 구리이온 제거 특성

  • You, Hae-Na (Department of Chemical Engineering, Pukyong National University) ;
  • Lee, Min-Gyu (Department of Chemical Engineering, Pukyong National University)
  • Received : 2014.02.20
  • Accepted : 2014.04.21
  • Published : 2014.09.30
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Abstract

PVA gel beads were made by immobilization of thenoyltrifluoroacetone (HTTA) and trioctylphoshineoxide (TOPO) with poly vinyl alcohol (PVA). The prepared PVA gel beads were used for the removal of $Cu^{2+}$ from aqueous solution. The removal characteristics of $Cu^{2+}$ by PVA gel beads was found to follow the pseudo-second-order kinetic equation. The maximum removal capacity calculated from Langmuir isotherm equation was 9.59 mg/g. The optimal pH was in the range of 3.5~6. Even when the PVA gel beads were reused 5 times, the leakage of extractant and the damage of PVA gel beads was not observed.

테노일트리플루오로아세톤(thenoyltrifluoroacetone, HTTA)과 트리옥틸포스핀옥사이드(trioctylphoshineoxide, TOPO)를 폴리비닐알콜(poly vinyl alcohol, PVA)로 고정화한 PVA 겔 비드를 제조하고, 이를 사용하여 수중의 $Cu^{2+}$를 제거하였다. 제조한 PVA 겔 비드의 $Cu^{2+}$ 제거특성은 유사 2차 속도식에 잘 적용되었으며, 랑미어 등온식에서 구한 $Cu^{2+}$의 최대 제거량은 9.59 mg/g이었다. $Cu^{2+}$ 제거의 최적 pH 범위는 pH 3.5~6이었다. PVA겔 비드를 5차례 재사용한 경우에도 추출제의 손실이나 PVA겔 비드의 손상은 관찰되지 않았다.

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References

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