High-pressure cloud point data for the system glycerol + olive oil + n-butane + AOT

AUTOR(ES)

Bender, J. P., Junges, A., Franceschi, E., Corazza, F. C., Dariva, C., Oliveira, J. Vladimir, Corazza, M. L.

FONTE

Brazilian Journal of Chemical Engineering

DATA DE PUBLICAÇÃO

2008-09

RESUMO

This work reports high-pressure cloud point data for the quaternary system glycerol + olive oil + n-butane + AOT surfactant. The static synthetic method, using a variable-volume view cell, was employed for obtaining the experimental data at pressures up to 27 MPa. The effects of glycerol/olive oil concentration and surfactant addition on the pressure transition values were evaluated in the temperature range from 303 K to 343 K. For the system investigated, vapor-liquid (VLE), liquid-liquid (LLE) and vapor-liquid-liquid (VLLE) equilibrium were recorded. It was experimentally observed that, at a given temperature and surfactant content, an increase in the concentration of glycerol/oil ratio led to a pronounced increase in the slope of the liquid-liquid coexistence curve. A comparison with results reported for the same system but using propane as solvent showed that much lower pressure transition values are obtained when using n-butane.

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