Equilibrium and Rate Data for the Extraction of Lipids Using Compressed Carbon Dioxide

Phase behavior of olive and soybean oils in compressed propane and n-butane

“…Numerous studies have shown that many reactions can be conducted in compressed liquid or supercritical solvent and, in some cases, rates and selectivities achieved are greater than those obtained in normal liquid or gas phase reactions (Rendón et al, 2001;Oliveira and Oliveira, 2000;Jackson and King, 1997;Savage et al, 1995;King et al, 1987). To conduct such reactions, knowledge of the phase behavior of all components in the compressed solvent is of primary importance for process design optimization and for preventing enzyme inactivation due to the effects of high pressure.…”

Equilibrium partition of rapeseed oil between supercritical CO2 and prepressed rapeseed

“…These results may have been negatively impacted by residual traces of hexane (potential co-solvent/modifier) in the oil, and difficulties in attainment of equilibrium in a single pass of SC CO 2 through the extraction vessel. These difficulties can be circumvented by partially removing solute using SC CO 2 , and by recirculating the SCF phase through the extraction vessel, as done by others [6,7]. For their measurements, Young and Weber [7] built an experimental device in which it was possible to combine equilibration (by recirculation of the SCF phase) and extraction (to reduce the phenantrene content in the soil sample) steps.…”

“…However, to the best of the authors' knowledge there are experimental reports in literature only for the partition of oil between partially-extracted canola seeds [5] or neat rapeseeds [6] and SC CO 2 , and of phenanthrene between spiked soil samples and pure or methanol-modified SC CO 2 [7]. In their experiments, Bulley et al [5] reduced the initial oil content of canola samples to various extents by partial extraction with hexane, and estimated corresponding equilibrium concentrations in CO 2 from the initial slope of integral extraction curves.…”

“…For their measurements, Young and Weber [7] built an experimental device in which it was possible to combine equilibration (by recirculation of the SCF phase) and extraction (to reduce the phenantrene content in the soil sample) steps. To an extent, a similar methodology was adopted by King et al [6], who modified existing facilities at the University of Birmingham to that end. Data of King et al [6] agree with that of Bulley et al [5] for high residual oil contents in the oilseeds [2], but for low residual oil contents the two data sets do not agree and the data of King et al [6] is not as expected (the saturation concentration of oil in SC CO 2 stays in an intermediate plateau instead of dropping to very low values).…”

“…To an extent, a similar methodology was adopted by King et al [6], who modified existing facilities at the University of Birmingham to that end. Data of King et al [6] agree with that of Bulley et al [5] for high residual oil contents in the oilseeds [2], but for low residual oil contents the two data sets do not agree and the data of King et al [6] is not as expected (the saturation concentration of oil in SC CO 2 stays in an intermediate plateau instead of dropping to very low values). There were no further reports on the use of the experimental setup at the University of Birmingham to measure equilibrium partition involving SC CO 2 and solid substrates.…”