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Physical Chemistry Research، جلد ۹، شماره ۲، صفحات ۱۸۱-۱۹۲
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عنوان انگلیسی Measurement, Correlation and Prediction of LLE Data for the Ternary System Water + Lactic Acid + Diethyl Ether at 293.2 K
چکیده انگلیسی مقاله 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.
کلیدواژه‌های انگلیسی مقاله Lactic acid,Liquid-liquid equilibrium,Thermodynamic Modeling
نویسندگان مقاله Sina Shekarsaraee |
Department of Chemistry, Faculty of Science, University of Guilan, Rasht, Iran

Abbas Naimi |
Food and Drug Research Center, Vice-chancellery of Food and Drug, Guilan University of Medical Sciences, Rasht, Iran

Bahareh Bussary |
Scientific Chemistry Laboratory, Kimia Teyf Khazar Company

نشانی اینترنتی https://www.physchemres.org/article_121427_d93ebb1e1c0af91cfc1cdc0b1527e9ec.pdf
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