Experimental (liquid plus liquid) equilibrium data for ternary and quaternary mixtures of fatty acid methyl and ethyl esters (FAME/FAEE) from soybean oil

被引:13
作者
Beneti, Stephani C. [1 ,2 ]
Lanza, Marcelo [3 ]
Mazutti, Marcio A. [4 ]
Kunita, Marcos Hiroiuqui [5 ]
Cardozo-Filho, Lucio [6 ]
Vladimir Oliveira, J. [1 ,3 ]
机构
[1] Univ Reg Integrada Alto Uruguai & Missoes, Dept Food Engn, BR-99700000 Erechim, RS, Brazil
[2] Fed Univ Parana Technol, UTFPR, Dept Food Engn & Technol, BR-87301006 Campo Mourao, PR, Brazil
[3] Univ Fed Santa Catarina, Dept Chem & Food Engn, BR-88040900 Florianopolis, SC, Brazil
[4] Univ Fed Santa Maria, Dept Chem Engn, BR-97105900 Santa Maria, RS, Brazil
[5] Univ Estadual Maringa, Dept Chem, Maringa, Parana, Brazil
[6] Univ Estadual Maringa, Dept Chem Engn, BR-87020900 Maringa, Parana, Brazil
关键词
FAME; FAEE; LLE; Near-infrared spectroscopy; BIODIESEL PRODUCTION; ANHYDROUS ETHANOL; PHASE-EQUILIBRIUM; GLYCEROL; SYSTEMS; METHANOL; TRANSESTERIFICATION; CATALYSTS; OLEATE; WATER;
D O I
10.1016/j.jct.2013.08.032
中图分类号
O414.1 [热力学];
学科分类号
摘要
This work is aimed at providing an easy and quick determination of the biodiesel products using near infrared spectroscopy (NIR) by combination with the multivariate calibration in the analysis of (liquid + liquid) equilibrium (LLE) data for ternary and quaternary mixtures containing soybean fatty acid methyl (FAME) and ethyl (FAEE) esters, glycerol, ethanol, methanol and water, at various temperatures. The mass balance for the compositions obtained for each phase was carried out so as to demonstrate the reliability of the models generated by the multivariate calibration. Two distinct phases are observed, a glycerol-rich and the other ester-rich, while ethanol is dissolved among the phases hence reducing the partial mutual miscibility between glycerol and ester. Through (liquid + liquid) equilibrium (LLE) results, systems containing FAEE at T = 318.15 K and 303.15 K (calibration using data obtained at temperature of 318.15 K), a good agreement is verified among the values determined using conventional and NIR technique for alcoholic phase (AP) or aqueous phase (WP) and biodiesel phase (BP). Likewise in the systems containing FAME at 318.15 K, 303.15 K and 333.15 K (calibration using data obtained at temperature of 318.15 K), the LLE results were reproduced at the upper and lower temperature to the tests of the reproducibility of the models generated by the multivariate calibration. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:60 / 70
页数:11
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