DOI QR코드

DOI QR Code

Preparation of PVC-Al(OH)3 Beads Immobilized Al(OH)3 with PVC and their Adsorption Characteristics for Fluoride Ions from Aqueous Solution

Al(OH)3를 PVC로 고정화한 PVC-Al(OH)3 비드의 제조와 수중의 불소 이온의 흡착 특성

  • Received : 2014.01.16
  • Accepted : 2014.04.09
  • Published : 2014.05.30

Abstract

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.

Keywords

Aluminum hydroxide;Fluoride ion;Adsorption;Polyvinyl chloride;Immobilization

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