Separation and Recovery of Indole from Model Coal Tar Fraction by Batch Cocurrent 5 Stages Equilibrium Extraction

회분 병류 5단 평형추출에 의한 모델 콜타르 유분 중에 함유된 Indole의 분리 및 회수

  • Kim, Su Jin (Department of Materials Science and Applied Chemistry, Chungwoon University) ;
  • Chun, Yong Jin (Department of Materials Science and Applied Chemistry, Chungwoon University) ;
  • Jeong, Hwa Jin (Department of Fashion & Textile Engineering, Chungwoon University)
  • 김수진 (청운대학교 신소재응용화학과) ;
  • 전용진 (청운대학교 신소재응용화학과) ;
  • 정화진 (청운대학교 패션섬유공학과)
  • Received : 2006.09.11
  • Accepted : 2007.03.07
  • Published : 2007.04.10

Abstract

The separation of indole from a model mixture comprising four kinds of nitrogen heterocyclic compounds [indole (In), quinoline (Q), iso-quinoline (iQ), quinaldine (Qu)], three kinds of bicyclic aromatic compounds [1-methylnaphthalene (1MN), 2-methylnaphthalene (2MN), dimethylnaphthalene (DMN)], biphenyl (Bp) and phenyl ether (Pe) was examined by batch cocurrent 4 stages equilibrium extraction. The model mixture used as a raw material in this work was prepared according to the components and compositions contained in coal tar fraction (the temperature ranges of fraction: $240{\sim}265^{\circ}C$). An aqueous solution of formamide was used as a solvent. Indole was recovered more than 99% through 4 stages of the equilibrium extraction. The range of selectivity of indole in reference to DMN obtained through the 5 stages equilibrium extraction was found to be 63~118. The process for separation and recovery of indole contained in coal tar was studied by using the experimental results obtained from this work and the previous work.

Acknowledgement

Supported by : Korea Science & Engineering Foundation

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