Modeling Supercritical Fluid Extraction Process Involving Solute-Solid Interaction.

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  • Goto Motonobu
    Department of Applied Chemistry and Biochemistry, Kumamoto University
  • Roy Bhupesh C.
    Department of Applied Chemistry and Biochemistry, Kumamoto University
  • Kodama Akio
    Department of Applied Chemistry and Biochemistry, Kumamoto University
  • Hirose Tsutomu
    Department of Applied Chemistry and Biochemistry, Kumamoto University

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  • Modeling Supercritical Fluid Extraction

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Extraction or leaching of solute from natural solid material is a mass transfer process involving dissolution or release of solutes from a solid matrix. Interaction between the solute and solid matrix often influences the supercritical fluid extraction process. A model accounting for the solute-solid interaction as well as mass transfer is developed. The BET equation is used to incorporate the interaction and the solubility of solutes into the local equilibrium in the model. Experimental data for the supercritical extraction of essential oil and cuticular wax from peppermint leaves are successfully analyzed by the model. The effects of parameters on the extraction behavior are demonstrated to illustrate the concept of the model.

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