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KMID : 1024520140230050887
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Journal of the Environmental Sciences
2014 Volume.23 No. 5 p.887 ~ p.893
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Preparation of PVC-Al(OH)3 Beads Immobilized Al(OH)3 with PVC and their Adsorption Characteristics for Fluoride Ions from Aqueous Solution
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You Hae-Na
Kam Sang-Kyu
Lee Min-Gyu
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Abstract
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In order to remove fluoride ions from aqueous solution, PVC-Al(OH)3 beads were prepared by immobilizing Al(OH)3 with
polyvinyl chloride (PVC). The prepared PVC-Al(OH)3 bead was characterized by using SEM, EDS and Zeta potential.
Dependences of pH, contact time and initial fluoride concentration on the adsorption of fluoride ions were studied. The
optimal pH was in the range of 4～10. The adsorption was rapid during the initial 12 hr, and equilibrium was attained within
72 hr. The adsorption rate of fluoride ions by PVC-Al(OH)3 beads obeyed the pseudo-second-order kinetic model. The
maximum adsorption capacity obtained from Langmuir isotherm model was found to be 62.68 mg/g.
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KEYWORD
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Aluminum hydroxide, Fluoride ion, Adsorption, Polyvinyl chloride, Immobilization
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