생태와환경 (Korean Journal of Ecology and Environment)

  • 제49권4호
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  • Pages.289-295
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  • 2016
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  • 2288-1115(pISSN)
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  • 2288-1123(eISSN)
한국수생태학회 (The Korean Society of Limnology)
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하천 퇴적물의 입자크기에 따른 불소의 흡착 특성

Effect of Particle Size of Sediment on Adsorption of Fluoride

  • 김채림 (경희대학교 환경응용과학부) ;
  • 오종민 (경희대학교 환경학 및 환경공학과)
  • Kim, Chae-Lim (Department of Applied Environmental Science, KyungHee University) ;
  • Oh, Jong-Min (Environmental Science and Engineering, KyungHee University)
  • 투고 : 2016.08.27
  • 심사 : 2016.10.07
  • 발행 : 2016.12.31
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초록

The purpose of this study is to find out the effect of particle size of sediment on adsorption of fluoride. Particle size is classified as sand, silt and clay. Adsorption equilibrium time, adsorption isotherms and the effect of pH were investigated through batch tests. The $pH_{pzc}$ of sand, silt, clay was respectively 6, 8, 4.5 and AEC (anion exchange capacity) was highest in silt, respectively 0.0095, 0.0224, $0.014meq\;g^{-1}$. Adsorption of fluoride on the sediment was in equilibrium within 300 minutes from all particle size. The experimental data of isotherms at various pH were well explained by Freundlich equation. As the experimental results of the effect of pH, the adsorption efficiency of sand and silt were reduced after the $pH_{pzc}$. However, the adsorption efficiency of clay was maintained after the $pH_{pzc}$, and decreased rapidly higher than pH 12.

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참고문헌

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