期刊
FUEL
卷 141, 期 -, 页码 164-172出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2014.10.049
关键词
LLE; Biodiesel; Soybean oil; Ethanol; NRTL
资金
- CNPq (Brazilian Agency) [303573/2012-0, 558836/2010-0]
- CAPES (Brazilian Agency)
- PRH24 (Brazilian Agency)
- Fundacao Araucaoria-Parana (Brazilian Agency)
This work reports a new set of experimental data for the liquid-liquid equilibrium for {soybean oil + soybean oil ethyl esters + (ethanol + water)} systems at atmospheric pressure and at T = (298.15, 313.15 and 323.15) K, while pseudobinary solubility data were obtained for the system {soybean oil + (ethanol + water)} at temperatures from 278.15 to 348.15 K. The liquid-phase compositions were measured by gravimetry, refractive index and Karl Fischer methods. Solubility curves (binodal) were obtained for each temperature by the cloud-point method. The NRTL activity coefficient model was used to correlate experimental tie-line data. Predicted values were close to experimental ones indicating a good correlation for the thermodynamic model used. (C) 2014 Published by Elsevier Ltd.
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