An important application of supercritical extraction is the removal of solutes from particles of porous natural materials.
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An important application of supercritical extraction is the removal of solutes from particles of porous natural materials. Such applications include the extraction of caffeine from coffee beans and the extraction of ginger oil from ginger root. When CO2 is used as the solvent, the rate of extraction is found to be independent of the flow rate of CO2 past the particles, but dependent upon the particle size. Develop a suitable mathematical model for the rate of extraction that is consistent with these observations. What parameter in the model would have to be determined by experiment?
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In the extraction of a solute from a natural material by a fluid solvent the following mechanism may be considered It is discussed in several places in the literature including an article by Goto Roy ...View the full answer
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