Liquid-liquid phase equilibrium in ternary mixture of waste fish oil biodiesel-methanol-glycerol: Experimental data and thermodynamic modeling

详细信息    查看全文

• 作者：M. Maghami ; J. Yousefi Seyf ; S.M. Sadrameli ; ^{sadramel@modares.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; A. Haghtalab
• 关键词：Waste fish oil ; Thermodynamic model ; LLE equilibrium ; Biodiesel ; Glycerol separation
• 刊名：Fluid Phase Equilibria
• 出版年：2016
• 出版时间：15 February 2016
• 年：2016
• 卷：409
• 期：Complete
• 页码：124-130
• 全文大小：532 K

文摘

Liquid–liquid Equilibrium (LLE) of waste fish oil biodiesel, methanol and glycerol were studied at three temperatures (298.15, 313.15, and 328.15 K). The experimental measurements were carried out at fixed temperatures at atmospheric pressure. The experimental data were correlated by NRTL and UNIQUAC activity coefficient models. Predictive models such as UNIFAC, UNIFAC-LLE, UNIFAC-LBY, UNIFAC-DMD and NIST-modified UNIFAC were used to obtain the equilibrium compositions. All models could well predict the experimental data. Deviations between the calculated and experimental data for NRTL, UNIQUAC, UNIFAC, UNIFAC-LLE, UNIFAC-LBY, UNIFAC-DMD, and NIST-modified UNIFAC were 2.05%, 2.85%, 2.09%, 2.60%, 3.30%, 2.04%, and 2.05% respectively which show that UNIFAC-DMD model could better correlate the experimental data.