한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제26권6호
  • /
  • Pages.919-925
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  • 2010
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  • 2289-0971(pISSN)
  • /
  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
권호 표지

폐석고 침전제를 이용한 불소폐수 처리특성

Treatment Characteristics of Fluoride Wastewater by Waste Gypsum as a Precipitant

  • Kim, Sung-Joon (Department of Environmental Engineering, Chonbuk National University) ;
  • Jeon, Yong-Tae (Department of Environmental Engineering, Chonbuk National University) ;
  • Won, Chan-Hee (Department of Environmental Engineering, Chonbuk National University)
  • 투고 : 2010.07.05
  • 심사 : 2010.09.01
  • 발행 : 2010.11.30
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초록

The features of precipitating reaction of fluoride have been examined by employing waste gypsum as a precipitant. The major component of waste gypsum was examined to be CaO with minor components of $SO_3$, $SiO_2$. In the experimental condition, the precipitating reaction of fluoride progressed rapidly within a few minutes after the reaction started and reached its equilibrium in 10 minutes. Kinetic analysis showed that the precipitating reaction of fluoride generally followed a first Oder and second Oder with decreasing rate constant with the initial dosage of precipitant. XRD analysis showed that the crystalline structure of precipitate was mainly $CaF_2$ with partly $Ca_5(PO_4)_3(OH)$.

키워드

참고문헌

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