Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

In this work, experimental solubility determinations of binary and ternary systems that involves fatty acids (palmitic acid and oleic acid) in supercritical carbon dioxide (SC-CO2) were performed using an experimental system based on the static synthetic method with online sampling. Solubility data of squalene + SC-CO2, and palmitic acid + SC-CO2 were obtained and compared with data from the international literature resulting in the validation of the experimental method. Experimental solubility measurements of squalene + palmitic acid + SC-CO2, and squalene + oleic acid + SC-CO2 were studied at pressures from 9.00 to 30.38 MPa and temperatures between 313.30 and 333.48 K. The standard uncertainties for temperature and pressure were evaluated to be 0.02 K and 0.02 MPa, respectively. The relative combined expanded uncertainty ( = 2) for the composition was estimated to be ( ) = 0.049 mole fraction. Chrastil, del-Valle and Aguilera, Bartle et al., Kumar and Johnston models were used to correlate the experimental solubility data. The modeling results validated the selfconsistency of experimental data in the entire range of measurement.