Analysis of cosolvent effect on supercritical carbon dioxide extraction for α-pinene and 1,8-cineole

被引：11

作者：

Shimoyama, Yusuke ^{[1
]}

Tokumoto, Hiroki ^{[2
]}

Matsuno, Takumi ^{[2
]}

Iwai, Yoshio ^{[2
]}

机构：

[1] Tokyo Inst Technol, Dept Chem Engn, Meguro Ku, Tokyo 1528550, Japan

[2] Kyushu Univ, Dept Chem Engn, Fac Engn, Nishi Ku, Fukuoka 8190395, Japan

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2010年 / 88卷 / 12A期

关键词：

Extraction; Supercritical fluid; Cosolvent effect; Eucalyptus oil; VAPOR-LIQUID-EQUILIBRIA; ESSENTIAL OIL; PHASE-EQUILIBRIA; SOLUBILITY; ETHANOL; WATER; TEMPERATURES; MONOTERPENES;

D O I：

10.1016/j.cherd.2010.04.009

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The solubilities of alpha-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 323 K and 8.0 MPa. 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 alpha-pinene and 1,8-cineole in supercritical CO2 were investigated. The selectivities at feed concentration of cosolvent of 0.056 mol L-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 alpha-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 alpha-pinene and 1,8-cineole in supercritical CO2. (C) 2010 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：1563 / 1568

页数：6

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