TY - JOUR
T1 - Analysis of cosolvent effect on supercritical carbon dioxide extraction for α-pinene and 1,8-cineole
AU - Shimoyama, Yusuke
AU - Tokumoto, Hiroki
AU - Matsuno, Takumi
AU - Iwai, Yoshio
PY - 2010/12
Y1 - 2010/12
N2 - The solubilities of α-pinene and 1,8-cineole in supercritical carbon dioxide with and without cosolvent were measured by using a circulation type apparatus coupled with an on-line Fourier transform infrared (FT-IR) spectroscope at 323K and 8.0MPa. The cosolvents interested in this work were ethanol, water, acetone and hexane. The solubilities were measured under vapor-liquid two phases. The effects of cosolvents on the solubilities and selectivities of α-pinene and 1,8-cineole in supercritical CO2 were investigated. The selectivities at feed concentration of cosolvent of 0.056molL-1 were increased 1.23 times by ethanol and decreased 0.82 times by hexane. Peng-Robinson equation of state with a quadratic mixing rule was used for correlations of the solubilities for α-pinene and 1,8-cineole in supercritical CO2 with and without cosolvent. The correlated results reproduce the experimental data of cosolvent effects on the solubilities and selectivities of α-pinene and 1,8-cineole in supercritical CO2.
AB - The solubilities of α-pinene and 1,8-cineole in supercritical carbon dioxide with and without cosolvent were measured by using a circulation type apparatus coupled with an on-line Fourier transform infrared (FT-IR) spectroscope at 323K and 8.0MPa. The cosolvents interested in this work were ethanol, water, acetone and hexane. The solubilities were measured under vapor-liquid two phases. The effects of cosolvents on the solubilities and selectivities of α-pinene and 1,8-cineole in supercritical CO2 were investigated. The selectivities at feed concentration of cosolvent of 0.056molL-1 were increased 1.23 times by ethanol and decreased 0.82 times by hexane. Peng-Robinson equation of state with a quadratic mixing rule was used for correlations of the solubilities for α-pinene and 1,8-cineole in supercritical CO2 with and without cosolvent. The correlated results reproduce the experimental data of cosolvent effects on the solubilities and selectivities of α-pinene and 1,8-cineole in supercritical CO2.
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U2 - 10.1016/j.cherd.2010.04.009
DO - 10.1016/j.cherd.2010.04.009
M3 - Article
AN - SCOPUS:78649773215
SN - 0263-8762
VL - 88
SP - 1563
EP - 1568
JO - Chemical Engineering Research and Design
JF - Chemical Engineering Research and Design
IS - 12
ER -