Determination of liquid-liquid equilibrium data for biodiesel containing ternary systems using near infrared technique

Brazilian Journal of Chemical Engineering

S. C. Beneti²  W. L. Priamo¹  M. Lanza¹  M. H. Kunita¹  M. A. Mazutti¹  L. Cardozo Filho¹  J. Vladimir Oliveira² 

[1] ,Universidade Regional Integrada do Alto Uruguai e das Missões Department of Food Engineering Erechim RS ,Brazil

关键词: Liquid-liquid equilibrium;    Near infrared spectroscopy;    Biodiesel;    Soybean oil;   

DOI  :  10.1590/S0104-66322013000100004

来源: SciELO

【 摘 要 】

This work is focused on the determination of liquid-liquid equilibrium data for systems containing methyl and ethyl fatty acid esters, water, glycerol and ethanol at temperatures of 303.15 K and 318.15 K using a near-infrared spectroscopy technique (NIR). The NIR method used in this investigation provided quite satisfactory results when compared to conventional analytical techniques and hence can be used as an advantageous tool to quantify the compounds involved in the liquid-liquid equilibrium systems: i) without previous preparation of the samples; ii) with less waste generation; iii) at low cost; and iv) via a non-destructive technique, as sample analyses are made directly, showing good reproducibility and reliability of the data. The NIR method was effective in the use of different temperatures for calibration and validation of the systems under study. Besides, it is shown that extrapolation with the technique may be possible, making LLE predictions feasible for other conditions not used in the calibration procedure.

【 授权许可】

CC BY   
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