Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Characteristics of Phosphate Adsorption using Prepared Magnetic Iron Oxide (MIO) by Co-precipitation Method in Water

공침법에 의해 제조된 Magnetic Iron Oxide (MIO)를 이용한 수중 인 흡착 특성

  • Lee, Won-Hee (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Chung, Jinwook (R&D Center, Samsung Engineering) ;
  • Kim, Jong-Oh (Department of Civil and Environmental Engineering, Hanyang University)
  • 이원희 (한양대학교 건설환경공학과) ;
  • 정진욱 (삼성엔지니어링 R&D 센터) ;
  • 김종오 (한양대학교 건설환경공학과)
  • Received : 2015.10.08
  • Accepted : 2015.11.17
  • Published : 2015.12.15
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Abstract

This study was carried out for characterization of MIO synthesized in our laboratory by co-precipitation method and applied isotherm and kinetic models for adsorption properties. XRD analysis were conducted to find crystal structure of synthesized MIO. Further SEM and XPS analysis was performed before and after phosphate adsorption, and BET analysis for surface characterization. Phosphate stock solution was prepared by KH2PO4 for characterization of phosphate adsorption, and batch experiment was conducted using 50 ml conical tube. Langmuir and Freundlich models were applied based on adsorption equilibrium test of MIO by initial phosphate solution. Pseudo first order and pseudo second order models were applied for interpretation of kinetic model by temperature. Surface area and pore size of MIO were found $89.6m^2/g$ and 16 nm respectively. And, the determination coefficient ($R^2$) value of Langmuir model was 0.9779, which was comparatively higher than that of Freundlich isotherm model 0.9340.

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References

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