Liquid−Liquid Equilibrium Data for Systems Containing Vegetable Oils, Anhydrous Ethanol, and Hexane at (313.15, 318.15, and 328.15) K
详细信息 查看全文
- 作者：Marcelo Lanza ; Guilherme Sanaiotti ; Eduardo A. C. Batista ; Ronei J. Poppi ; Antonio J. A. Meirelles
- 刊名：Journal of Chemical & Engineering Data
- 出版年：2009
- 出版时间：June 11, 2009
- 年：2009
- 卷：54
- 期：6
- 页码：1850-1859
- 全文大小：153K
- 年卷期：v.54,no.6(June 11, 2009)
- ISSN：1520-5134
文摘
The aim of this work was to determine liquid−liquid equilibrium data for systems of interest in ethyl ester (biodiesel) production. The following systems were investigated: refined soybean oil + anhydrous ethanol + hexane at (313.15 ± 0.1) K and (328.25 ± 0.1) K, refined canola oil + anhydrous ethanol + hexane at (313.25 ± 0.1) K and (328.15 ± 0.1) K, and refined palm oil + anhydrous ethanol + hexane at (318.15 ± 0.1) K and (328.25 ± 0.1) K. The instrumental technique of near-infrared spectroscopy allied to multivariate calibration (in this work, this union was denominated “NIR method”) was used for quantification of the phase compositions. The NIR method presented an appropriate experimental accuracy for quantifying equilibrium data at higher temperatures. Good reliability of the phase compositions was confirmed from values of global mass balance deviations ranging from (0.06 to 0.16) %. The experimental data were correlated using the NRTL model with an average global deviation of 0.83 %.