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Solubilization of Hydrocarbon Oils by C12E8 Nonionic Surfactant Solution  

Lim, JongChoo (Department of Chemical and Biochemical Engineering, Dongguk University)
Publication Information
Korean Chemical Engineering Research / v.45, no.3, 2007 , pp. 219-225 More about this Journal
Abstract
The equilibrium solubilization capacity of pure hydrocarbon oils by 2.5 wt% $C_{12}E_8$ nonionic surfactant solution was measured at $30^{\circ}C$ by gas chromatography (GC) analysis. Experimental results indicated that the molar solubilization ratio (MSR) for pure alkanes was found to decrease almost linearly with the alkane carbon number (ACN) of the hydrocarbon oil. For the binary mixture systems of the hydrocarbon oils both selective and nonselective solubilization behaviors were observed depending on the difference in carbon number of the two hydrocarbon oils. Equilibrium solubilization tests for the two n-octane/n-nonane and n-nonane/n-decane mixture systems in $C_{12}E_8$ surfactant solutions suggest slightly selective solubilization in favor of n-octane, but the small difference in solubilization rates between two hydrocarbon oils does not allow ruling out non-selective solubilization for these particular systems. This is certainly not the case for the n-octane/n-decane mixture, for which selective solubilization was conclusively demonstrated by GC analysis data.
Keywords
Equilibrium Solubilization Capacity; $C_{12}E_8$ Nonionic Surfactant; Micelle; Hydrocarbon Oil; Selectivity;
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Times Cited By KSCI : 4  (Citation Analysis)
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