Influence of salt concentration on solubility and tie-line data for the system: Formic acid + n-butanol + water |
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| Authors: | Thanaporn Wannachod Milan Hronec Tomá? Soták Katarína Fulajtárová |
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| Affiliation: | 1. Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Patumwan, Bangkok, Thailand;2. Department of Organic Technology, Slovak University of Technology, Bratislava, Slovakia |
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| Abstract: | The tie-line and solubility data, i.e. formic acid (FA) + n-butanol + water + NaCl, were resolved at T = 298.15 K and under ambient pressure. The Othmer–Tobias equation was applied in this study. The experimental data were correlated and all linear correlation coefficients were found to be approximately equal to 1. Both the Universal Quasi-chemical Theory (UNIQUAC) and Nonrandom Two Liquid Theory (NRTL) and NRTL models were employed in order to compare the experimental liquid–liquid equilibrium (LLE) and tie-line data. Consequently, the calculated and experimental data proved to be a good fit. Results show that adding salt to the system proved beneficial by increasing the separation of FA from water. |
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| Keywords: | Salt effect LLE separation NRTL UNIQUAC |
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