کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
205887 | 461127 | 2015 | 9 صفحه PDF | دانلود رایگان |
• We measured LLE for the ethanol-based biodiesel systems.
• Soybean oil + FAEE + (ethanol + water) were measured.
• Tie lines and binodal curves were measured for all systems.
• The experimental data were well modeled using NRTL model.
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.
Journal: Fuel - Volume 141, 1 February 2015, Pages 164–172