Vapour liquid equilibria of monocaprylin plus palmitic acid or methyl stearate at P = (1.20 and 2.50) kPa by using DSC technique |
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| Institution: | 1. CAPEC, Dept. of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs Lyngby, Denmark;2. Faculty of Chemical Engineering, University of Campinas, Av. Albert Einstein 500, Cidade Universitária Zeferino Vaz, 13083-852 Campinas, SP, Brazil;3. Dept. of Exact and Earth Sciences, Federal University of São Paulo (UNIFESP), 09972-270 Diadema, SP, Brazil;4. Vegetable Oil Technology Business Unit, Alfa Laval Copenhagen A/S, Maskinvej 5, DK-2860 Soeborg, Denmark;1. National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, USA;2. Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306, USA;3. Institute of Molecular Biophysics, Florida State University, Tallahassee, FL 32306, USA;1. Laboratoire de Biochimie Théorique, UPR 9080 CNRS, Université Paris Diderot, Sorbonne Paris Cité, IBPC, 13 Rue Pierre et Marie Curie, 75005 Paris, France;2. CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France;3. Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France;4. Manchester Institute of Biotechnology, Faculty of Life Sciences, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK;5. Institut Universitaire de France, IUF, 103 Boulevard Saint-Michel, 75005 Paris, France;1. Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, Czech Republic;2. Institut für Strömungsmechanik und Wärmeübertragung, Technische Universität Wien, Resselgasse 3, 1040 Wien, Austria;1. School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, PR China;2. Beijing Key Laboratory of Membrane Science and Technology & College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China |
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| Abstract: | The Differential Scanning Calorimetry (DSC) technique is used for measuring isobaric (vapour + liquid) equilibria for two binary mixtures: {monocaprylin + palmitic acid (system 1) or methyl stearate (system 2)} at two different pressures P = (1.20 and 2.50) kPa. The obtained PTx data are correlated by Wilson, NRTL and UNIQUAC models. The original UNIFAC group contribution method is also considered and new binary interaction parameters for the main groups CH2, CCOO, OH and COOH are regressed, to account for the non-idealities found in these lipid systems. Established thermodynamic consistency tests are applied and attest the quality of the measured data. In terms of relevance of the selected components, system 1 can be found in the purification and deodorization steps during the production of edible oils, while, system 2 can be found in the purification steps of biodiesel. It should be noted that no such data could be found in the open literature, not only for the specific components selected but also for the combination of the classes of components considered; that is, acylglycerol plus fatty acid or fatty ester. |
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| Keywords: | Monoacylglycerols Differential Scanning Calorimetry (DSC) Excess Gibbs thermodynamic models |
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