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

유해나; 이민규; Hae-Na You; Min-Gyu Lee

Clean Technology, Vol.20, No.3, 251-255, September, 2014

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

유해나, 이민규 ^†

부경대학교 화학공학과, 608-739 부산광역시 남구 용당동 신선로 365

Hae-Na You, and Min-Gyu Lee^†

Department of Chemical Engineering, Pukyong National University, 365 Sinsun-ro, Yongdang-dong, Nam-gu, Busan 608-739, Korea

E-mail:

초록

테노일트리플루오로아세톤(thenoyltrifluoroacetone, HTTA)과 트리옥틸포스핀옥사이드(trioctylphoshineoxide, TOPO)를 폴리비닐알콜(poly vinyl alcohol, PVA)로 고정화한 PVA 겔 비드를 제조하고, 이를 사용하여 수중의 Cu2+를 제거하였다. 제조한 PVA 겔 비드의 Cu2+ 제거특성은 유사 2차 속도식에 잘 적용되었으며, 랑미어 등온식에서 구한 Cu2+의 최대 제거량은 9.59mg/g이었다. Cu2+ 제거의 최적 pH 범위는 pH 3.5~6이었다. PVA겔 비드를 5차례 재사용한 경우에도 추출제의 손실이나 PVA 겔 비드의 손상은 관찰되지 않았다.

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 Cu2+ from aqueous solution. The removal characteristics of Cu2+ 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.

Keywords:Immobilization;Poly vinyl alcohol;Thenoyltrifluoroacetone;Trioctyl phoshine oxide;Copper ion

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