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Effects of surface active agents on mass transfer during droplet formation, fall, and coalescence
Author(s) -
Skelland A. H. P.,
Caenepeel C. L.
Publication year - 1972
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690180611
Subject(s) - mass transfer , coalescence (physics) , pulmonary surfactant , chemistry , continuous phase modulation , drop (telecommunication) , cationic polymerization , chromatography , mass transfer coefficient , extraction (chemistry) , nozzle , dispersion (optics) , chemical engineering , thermodynamics , optics , organic chemistry , telecommunications , biochemistry , physics , astrobiology , computer science , engineering
This experimental study shows effects of anionic and cationic surface active agents on mass transfer during drop formation, fall, and coalescence for both continuous and disperse phase‐controlled systems. Three dispersion nozzles, mounted with 1.906 cm equilateral pitch, and a 5.08 cm I.D. extraction column were used to simulate certain conditions in commercial liquid‐liquid extraction units. The surfactant effects on extraction were pronounced, frequently reducing transfer to 10% of that in uncontaminated systems, with marked minima at intermediate concentrations of surfactant. In contrast, the continuous phase coefficient during coalescence was substantially increased by surfactants, with maxima in some cases.