Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Comparison of Solvent Extraction of Iron(III) from Chloride Solution between Alamine336 and TBP by Using Extraction Isotherm

등온적출곡선(等溫摘出曲線)에 의한 염산용액(鹽酸溶液)에서 TBP와 Alamine336의 철 추출(抽出) 비교(比較)

  • Lee, Man-Seung (Department of Advanced Materials Science and Engineering, Mokpo National University) ;
  • Kwak, Young-Ki (Department of Naval Architecture and Marine Engineering, Mokpo National University)
  • 이만승 (목포대학교 공과대학 신소재공학과) ;
  • 곽영기 (목포대학교 공과대학 선박해양시스템공학과)
  • Published : 2008.06.27
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Abstract

Solvent extraction behaviors of iron(III) from chloride solution at high ionic strength condition between Alamine336 and TBP were compared by using MaCabe-Thiele diagram. Extraction isotherms of iron by the two extractants were obtained by calculating the equilibrium concentrations of iron in both phases from the initial extraction conditions. In calculating the equilibrium concentration of iron, chemical equilibria in the aqueous phase and mass balance together with the solvent extraction reaction were considered. MaCabe-Thiele diagram of iron by 1M Alamine336 indicated that two extraction stages could lead to complete extraction of 0.5M iron from 3M HCl solution at an A/O ratio of 6/5. The extraction power of 1M Alamine336 was found to be the same as 2-3M TBP. MaCabe-Thiele diagram together with the physical properties of the two extractants indicated that Alamine336 is superior to TBP in extracting ferric iron from chloride solution.

이온강도가 센 염산용액에서 Alamine336과 TBP에 의한 염화 제 2철의 용매추출거동을 MaCabe-Thiele도를 이용하여 비교하였다. 초기 추출조건으로부터 수상과 유기상에서 철의 평형농도를 계산하여 두 추출제에 의한 철 추출의 등온추출곡선을 구했다. 평형농도 계산시 수상에서 착물형성반응과 물질수지 및 추출반응을 고려하였다. 1M의 Aalmine336으로 0.5M의 철을 3M의 염산용액에서 수상과 유기상의 부피비가 6/5인 조건에서 추출시 2단에 철의 대부분이 유기상으로 추출되는 것을 MaCabe-Thiele도에서 알 수 있었다. 1M의 Alamine336은 염산용액에서 철의 추출능력면에서 TBP 2-3M과 비슷하였다. MaCabe-Thiele도와 두 추출제의 물리적 특성으로부터 Alamine336이 TBP보다 염산용액에서 철의 추출특성이 우수한 것을 알 수 있었다.

Keywords

References

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