Abstract
AbstractIn 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.
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