293.2 K水+乳酸+乙醚三元体系LLE数据的测定、相关性及预测

IF 1.4 Q3 CHEMISTRY, MULTIDISCIPLINARY
S. Shekarsaraee, A. Naimi, Bahareh Bussary
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引用次数: 0

摘要

在T = 293.2 K和大气压下,实验测量了三元混合物(水+乳酸+乙醚)的系线点和溶解度数据。UNIFAC的计算预测乳酸和乙醚不会形成共沸物。用酸碱滴定法和卡尔费雪滴定法测定了有机层和水层的质量分数。云点法验证了所研究系统的LLE行为为Type-1。other - tobias图和Hand图证明了联络线点的可靠性。利用NRTL模型对联络线数据进行热力学关联,并对得到的二元相互作用参数进行验证。实验数据与相关数据吻合良好(rmsd = 0.88%)。通过计算不混相区分布系数和分离系数,考察了乙醚的提取质量。乳酸的水质量分数从0.070增加到0.305,分离因子从1.93降低到1.13。而同一区域的分布系数从0.07上升到0.12。研究表明,在293.2 K的温度下,所有饲料都可以提取乳酸。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Measurement, Correlation and Prediction of LLE Data for the Ternary System Water + Lactic Acid + Diethyl Ether at 293.2 K
In this study, tie-line points and solubility data were experimentally measured for the ternary mixture (water + lactic acid + diethyl ether) at T = 293.2 K and atmospheric pressure. UNIFAC calculations predicted that lactic acid and diethyl ether do not form an azeotrope. The mass fractions of organic and aqueous layers were determined by acid-base and the Karl Fisher titrations. Cloud point method verified that the LLE behavior of the studied system is Type-1. The reliability of the tie-line points was demonstrated by the Othmer–Tobias and Hand plots. Thermodynamic correlation of tie-line data was done by NRTL model and the obtained binary interaction parameters were tested after validation. The experimental and correlated data had very good accordance (rmsd = 0.88 %). Extraction quality of diethyl ether was investigated using the calculation of distribution coefficients and separation factors over the immiscibility area. Separation factors decreased from 1.93 to 1.13 when aqueous mass fraction of lactic acid increased from 0.070 to 0.305. However, distribution coefficient increased from 0.07 to 0.12 in the same region. The study shows that the extraction of lactic acid is possible in all investigated feeds at 293.2 K.
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来源期刊
Physical Chemistry Research
Physical Chemistry Research CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
2.70
自引率
8.30%
发文量
18
期刊介绍: The motivation for this new journal is the tremendous increasing of useful articles in the field of Physical Chemistry and the related subjects in recent years, and the need of communication between Physical Chemists, Physicists and Biophysicists. We attempt to establish this fruitful communication and quick publication. High quality original papers in English dealing with experimental, theoretical and applied research related to physics and chemistry are welcomed. This journal accepts your report for publication as a regular article, review, and Letter. Review articles discussing specific areas of physical chemistry of current chemical or physical importance are also published. Subjects of Interest: Thermodynamics, Statistical Mechanics, Statistical Thermodynamics, Molecular Spectroscopy, Quantum Chemistry, Computational Chemistry, Physical Chemistry of Life Sciences, Surface Chemistry, Catalysis, Physical Chemistry of Electrochemistry, Kinetics, Nanochemistry and Nanophysics, Liquid Crystals, Ionic Liquid, Photochemistry, Experimental article of Physical chemistry. Mathematical Chemistry.
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