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Retarding Effect of Contaminants on the Performance of a Two‐Impinging‐Jets Liquid‐Liquid Extraction Contactor
Author(s) -
Saien J.,
Doghahe S. A. O.,
Dehkordi A. M.
Publication year - 2010
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200900421
Subject(s) - chemistry , contactor , mass transfer , extraction (chemistry) , mass transfer coefficient , chromatography , sodium dodecyl sulfate , liquid–liquid extraction , ammonium sulfate , cationic polymerization , toluene , acetone , chemical engineering , organic chemistry , power (physics) , physics , engineering , quantum mechanics
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 Eötvös (Eö) numbers.