Measurement and Modeling of Liquid–Liquid Equilibria for Water–Phosphoric Acid–Aromatic Esters,Journal of Chemical & Engineering Data

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Measurement and Modeling of Liquid–Liquid Equilibria for Water–Phosphoric Acid–Aromatic Esters
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-10-07 , DOI: 10.1021/acs.jced.0c00273
A. Ghanadzadeh Gilani _{1,

2} , M. Pir ₂ , S. Shekarsaraee ₁

Affiliation

Ternary liquid–liquid equilibrium (LLE) data were measured for the {water + phosphoric acid + aromatic esters (benzyl acetate, benzyl benzoate, dimethyl phthalate, and diethyl phthalate)} systems at T = 298.2 K and P = 101.3 kPa. Moreover, to investigate the effect of temperature on LLE behavior, the LLE measurement was performed for a ternary system of (water + phosphoric acid + benzyl acetate) at three different temperatures (298.2, 308.2, and 318.2) K and the above pressure as well. Among the studied ternary systems, only the phase diagram for the system containing benzyl acetate clearly displays type-1 LLE behavior. The quality of the tie-line data was checked through the Othmer–Tobias correlation equation. The experimental data were correlated using the UNIQUAC model. For all of the systems studied, the separation factors are larger than unity, which means that the chosen aromatic esters might have the potential to extract phosphoric acid from water. As the solubility of the acid in benzyl benzoate is poor and it might be hydrolyzed in water after having been rested for a while, it is not a suitable solvent in the recovery of the acid from water.

中文翻译：

水-磷酸-芳族酯的液-液平衡的测量和建模

三元液-液平衡测量了（LLE）数据{水+磷酸+芳族酯（苄酯，苯甲酸苄酯，邻苯二甲酸二甲酯，和邻苯二甲酸二乙酯）}在系统Ť = 298.2 K和P= 101.3 kPa。此外，为了研究温度对LLE行为的影响，在三个不同温度（298.2、308.2和318.2）K以及上述压力下，对（水+磷酸+乙酸苄酯）的三元体系进行了LLE测量。。在所研究的三元系统中，只有包含乙酸苄酯的系统的相图清楚地显示了1型LLE行为。通过Othmer-Tobias相关方程检查联系线数据的质量。使用UNIQUAC模型对实验数据进行关联。对于所有研究的系统，分离系数均大于1，这意味着所选的芳族酯可能具有从水中提取磷酸的潜力。

更新日期：2020-11-12

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