Solubility of red palm oil in supercritical carbon dioxide: Measurement and modelling

doi:10.1016/j.cjche.2017.09.024

Abstract

Abstract: The solubility of red palm oil (RPO) in supercritical carbon dioxide (scCO₂) was determined using a dynamic method at 8.5-25 MPa and, 313.15-333.15 K and at a fixed scCO₂ flow rate of 2.9 g·min-1 using a full factorial design. The solubility was determined under low pressures and temperatures as a preliminary study for RPO particle formation using scCO₂. The solubility of RPO was 0.5-11.3 mg·(g CO₂)^-1 and was significantly affected by the pressure and temperature. RPO solubility increased with pressure and decreased with temperature. The Adachi-Lu model showed the best-fit for RPO solubility data with an average relative deviation of 14% with a high coefficient of determination, R² of 0.9667, whereas the Peng-Robinson equation of state thermodynamic model recorded deviations of 17%-30%.

Key words: Solubility, Supercritical carbon dioxide, Mathematical modelling, Thermodynamics, Palm oil

摘要： The solubility of red palm oil (RPO) in supercritical carbon dioxide (scCO₂) was determined using a dynamic method at 8.5-25 MPa and, 313.15-333.15 K and at a fixed scCO₂ flow rate of 2.9 g·min-1 using a full factorial design. The solubility was determined under low pressures and temperatures as a preliminary study for RPO particle formation using scCO₂. The solubility of RPO was 0.5-11.3 mg·(g CO₂)^-1 and was significantly affected by the pressure and temperature. RPO solubility increased with pressure and decreased with temperature. The Adachi-Lu model showed the best-fit for RPO solubility data with an average relative deviation of 14% with a high coefficient of determination, R² of 0.9667, whereas the Peng-Robinson equation of state thermodynamic model recorded deviations of 17%-30%.

关键词: Solubility, Supercritical carbon dioxide, Mathematical modelling, Thermodynamics, Palm oil

Wan Jun Lee, Chin Ping Tan, Rabiha Sulaiman, Gun Hean Chong. Solubility of red palm oil in supercritical carbon dioxide: Measurement and modelling[J]. Chin.J.Chem.Eng., 2018, 26(5): 964-969.

Wan Jun Lee, Chin Ping Tan, Rabiha Sulaiman, Gun Hean Chong. Solubility of red palm oil in supercritical carbon dioxide: Measurement and modelling[J]. Chinese Journal of Chemical Engineering, 2018, 26(5): 964-969.

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