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http://dx.doi.org/10.7464/ksct.2013.19.1.008

Phase Behavior of Sorbitan Monopalmitate Surfactant in Supercritical Carbon Dioxide  

Oh, Kyung Hwan (Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology)
Kim, Eun Jin (Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology)
Shin, Hun Yong (Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology)
Publication Information
Clean Technology / v.19, no.1, 2013 , pp. 8-12 More about this Journal
Abstract
Phase behavior of carbon dioxide + surfactant binary system and carbon dioxide + surfactant + water ternary system was investigated at the temperatures from 318 K to 348 K by using high pressure vapor liquid equilibrium apparatus containing variable-volume view cell. Sorbitan monopalmitate was used as the surfactant. The cloud point pressures for the binary mixture of carbon dioxide + sorbitan monopalmitate increased with an increasing of system temperatures and the maximum cloud point pressure was observed at the composition of 0.226 wt% of sorbitan monopalmitate. On the other hand, as the temperatures and compositions of water increased, the cloud point pressures for ternary system containing 0.1 wt% of sorbitan monopalmitate increased significantly. For the ternary system of constant 0.2 wt% of water, the cloud point pressure curves show relatively flat according to the change of compositions of surfactant. The cloud point pressures increased when the temperatures and compositions of water increased.
Keywords
High pressure phase behavior; Carbon dioxide; Surfactant; Water;
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Times Cited By KSCI : 3  (Citation Analysis)
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