Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Construction and Utilization of McCabe-Thiele Diagram for the Solvent Extraction

용매추출에서 McCabe-Thiele도의 작성 및 이용

  • Lee, Man Seung (Department of Advanced Material Science & Engineering, Institute of Rare Metal, Mokpo National University)
  • 이만승 (목포대학교 신소재공학과 희유금속연구소)
  • Received : 2018.06.04
  • Accepted : 2018.07.02
  • Published : 2018.08.31
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Abstract

In solvent extraction, extraction isotherm represents the relation between the equilibrium concentration of metal in the aqueous and organic phase. McCabe-Thiele diagram on which extraction isotherm and operating line are constructed provides valuable information on the mass transfer operation. When the equilibrium constant of a solvent extraction reaction is known, the calculation method to obtain extraction isotherm was introduced. Kresmer equation by which the number of extraction stages can be calculated when the distribution coefficient is constant was introduced.

용매추출에서 등온추출곡선은 수상과 유기상에서 평형관계에 있는 농도를 나타낸다. 등온추출곡선과 조업선을 동시에 나타낸 McCabe-Thiele도는 물질 전달공정에서 여러 유용한 정보를 제공한다. 추출반응식과 평형상수를 알고 있는 경우 등온추출곡선을 계산으로 구하는 방법을 소개하였다. 또한 분배계수가 일정한 경우 금속 추출에 필요한 추출단수를 추산할 수 있는 Kresmer식을 소개하였다.

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References

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