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Effects of surface-active agents on mass transfer inside drops

✍ Scribed by L. Mekasut; J. Molinier; H. Angelino

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
645 KB
Volume
34
Category
Article
ISSN
0009-2509

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✦ Synopsis

The transfer of Iodine from a drop of carbon tetrachlonde falling III water has been studied II-I the presence of two surface-acove agents, Teepol and sodium dodecylsulfate The presence of Teepol IS found to decrease the drop's terrnmal velocity more than that of so&urn dodecylsulfate, this effect bemg more pronounced for larger drops Small amounts of these surfactants reduce the internal circulation and consequently the mass transfer rates Efficiencres can even fall below those for ngld spheres when the surfactant concentration IS high The maxImum reduction for the mchvldual mass transfer coefficient IS about 77% wtth both surface-active agents Results are compared with the model of Vermeulen and the model of Cald_erbank and Korchmskr These results are also expressed usmg the Galileo number and ddTuslvrty effective factor R

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A study was made of the effect of a surface-active agent, on mass transfer of Iodme from an aqueous phase to a faIbng drop of carbon tetrachlonde The stze of drops was vaned from 0 2 to 0 4 cm equtvaknt sphencat drameters and the concentrations