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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.

cheongjeong gisul/clean technology

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