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Vapor liquid equilibria and liquid liquid equilibria in the oil/fat and biodiesel industries: experimental data, modelling and simulation

Abstract

Separation processes of the edible/oil and biodiesel industries involve fatty multicomponent mixtures that consist of fatty acids, esters and alcohols, acylglycerols, glycerol, and also some minor compounds, as natural antioxidants and vitamins. In the case of edible oil/fat processing, the unit operations that are related to this project, include: steam stripping of fatty acids/odors for steam deacidification and deodorization, with recovery of impurities as valuable side products, and solvent extraction as a new alternative for the deodorization process. In biodiesel production, the purification steps involve the separation of acylglycerols and glycerol from the methyl or ethyl esters. In all these unit operations, some combination of phase equilibria between vapor-liquid and liquid-liquid phases takes place. Due to the inherent complexity of the mixtures involved, accurate and reliable predictive tools of phase equilibria and physical properties are very important from a process design point of view as the selection of operational variables is sensitive to the uncertainties in the predicted properties of the mixtures involved. With an increasing trend in the demand of edible oils/fats and biodiesel, correct prediction of the necessary properties (pure component and mixture) has become a major issue of concern. However, there is a lack of measured data in this research area that must be fulfilled in order to get truly predictive models. The scope of this project can be divided as follows: Subproject 1 - Determination of novel vapor pressure data for partial acylglycerols and nutraceuticals by Differential Scanning Calorimetry; Subproject 2 - Determination of novel vapor liquid equilibrium data involving different classes of fatty compounds by Differential Scanning Calorimetry; Subproject 3 - Improvements in the Differential Scanning Calorimetry technique for the determination of vapor pressure and vapor liquid equilibrium data involving fatty compounds; Subproject 4 - Study of the viability of applying the solvent extraction process as an alternative for the deodorization step of edible oils. All experimental data will be used for testing and validating of modeling and simulation tools developed in the research group, and also for improving them when suitable. (AU)

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Scientific publications (8)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
TRONI, KELLY L.; DAMACENO, DANIELA S.; CERIANI, ROBERTA. Evaluation of a Variation of the Differential Scanning Calorimetry Technique for Measuring Boiling Points of Binary Mixtures at Subatmospheric Pressures. JOURNAL OF CHEMICAL AND ENGINEERING DATA, v. 65, n. 7, p. 3334-3343, JUL 9 2020. Web of Science Citations: 0.
DAMACENO, DANIELA S.; CERIANI, ROBERTA. Vapor-liquid equilibria of monoacylglicerol plus monoacylglicerol or alcohol or fatty acid at subatmospheric pressures. Fluid Phase Equilibria, v. 452, p. 135-142, NOV 25 2017. Web of Science Citations: 3.
HOMRICH, PERCI O. B.; MARIUTTI, LILIAN R. B.; BRAGAGNOLO, NEURA; CERIANI, ROBERTA. Solubility behavior of mixtures containing refined soybean oil and low-toxic solvents at different temperatures. Fluid Phase Equilibria, v. 442, p. 87-95, JUN 25 2017. Web of Science Citations: 4.
MAY, CAMILA P.; HOMRICH, PERCI O. B.; CERIANI, ROBERTA. Pseudoternary liquid-liquid equilibria for refined sunflower seed oil plus carboxylic acids plus anhydrous ethanol at 298.15 K. Fluid Phase Equilibria, v. 427, p. 297-302, NOV 15 2016. Web of Science Citations: 4.
HOMRICH, PERCI O. B.; CERIANI, ROBERTA. Liquid-Liquid Equilibrium Data for the Pseudoternary Model System of Refined Sunflower Seed Oil plus (n-Hexanal, or 2-Nonenal, or 2,4-Decadienal) plus Anhydrous Ethanol at 298.15 K. JOURNAL OF CHEMICAL AND ENGINEERING DATA, v. 61, n. 9, p. 3069-3076, SEP 2016. Web of Science Citations: 4.
TRONI, KELLY L.; DAMACENO, DANIELA S.; CERIANI, ROBERTA. Improving a variation of the DSC technique for measuring the boiling points of pure compounds at low pressures. JOURNAL OF CHEMICAL THERMODYNAMICS, v. 100, p. 191-197, SEP 2016. Web of Science Citations: 5.
CUNICO, LARISSA P.; DAMACENO, DANIELA S.; MATRICARDE FALLEIRO, RAFAEL M.; SARUP, BENT; ABILDSKOV, JENS; CERIANI, ROBERTA; GANI, RAFIQUL. Vapour liquid equilibria of monocaprylin plus palmitic acid or methyl stearate at P = (1.20 and 2.50) kPa by using DSC technique. JOURNAL OF CHEMICAL THERMODYNAMICS, v. 91, p. 108-115, DEC 2015. Web of Science Citations: 11.
GRANERO, MAIRA G.; ROCHA, BRUNA B.; CHAVES, MATHEUS A.; BRASIL, FERNANDA C. G.; ARACAVA, KEILA K.; RODRIGUES, CHRISTIANNE E. C.; CERIANI, ROBERTA; GONCALVES, CINTIA B. VISCOSITIES AND DENSITIES OF SYSTEMS CONTAINING FATTY COMPOUNDS AND ALCOHOLIC SOLVENTS. CANADIAN JOURNAL OF CHEMICAL ENGINEERING, v. 92, n. 11, p. 1939-1950, NOV 2014. Web of Science Citations: 5.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
CERIANI, Roberta. Improvement of the differential scanning calorimetry technique in the determination of boiling temperature data of pure compounds and binary mixtures. 2017. Doctoral Thesis - Universidade Estadual de Campinas, Faculdade de Engenharia Química.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.