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Retarding effect of contaminants on the performance of a two-impinging-jets liquid-liquid extraction contactor

Saien, J ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. Publisher: 2010
  3. Abstract:
  4. In industrial liquid-liquid extraction processes, the feed is not clean liquid but there are various kinds of contaminants in the feed entering the extractors. In this regard, a two-impinging-jets contacting device (TIJCD) was tested through the standard test system recommended by the European Federation of Chemical Engineering (EFCE), namely toluene-acetone-water, in the presence and absence of various types of surface-active agents (SAAs). The influences of anionic, cationic, and nonionic SAAs such as sodium dodecyl sulfate (SDS), dodecyl trimethyl ammonium chloride (DTMAC), and octylphenol decaethylene glycol ether (Triton X-100), respectively, on the extraction efficiency and overall volumetric mass transfer coefficient of a TIJCD were investigated. It was found that the presence of a little amount of the above named contaminants greatly decreases the performance capability of the TIJCD. On the basis of the experimental results obtained for various types of surfactants, the overall volumetric mass transfer coefficients obtained have satisfactorily been correlated in terms of Weber (We) and Eotvos (Eo) numbers
  5. Keywords:
  6. Extraction efficiency ; Ammonium chloride ; Contacting devices ; European federation of chemical engineerings ; Extraction efficiencies ; Glycol ethers ; Impinging jet ; Liquid-liquid extraction ; Liquid-liquid extraction process ; Nonionic ; Octylphenols ; Performance capability ; Retarding effect ; Sodium dodecyl sulfate ; Standard tests ; Trimethyl ; Triton X-100 ; Volumetric mass transfer coefficient ; Acetone ; Ammonium compounds ; Chemical contamination ; Chlorine compounds ; Contamination ; Dyes ; Ethers ; Glycols ; Mass transfer ; Sodium sulfate ; Solvent extraction ; Surface active agents ; Toluene ; Volumetric analysis ; Liquids
  7. Source: Chemical Engineering and Technology ; Volume 33, Issue 6 , June , 2010 , Pages 1003-1010 ; 09307516 (ISSN)
  8. URL: http://onlinelibrary.wiley.com/doi/10.1002/ceat.200900421/full