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Viscosities and densities of systems of interest to the oil industry and biodiesel production: experimental data, modeling and prediction

Abstract

Data acquisition of physical properties, such as viscosity and density, is fundamental to the equipment and piping design and to the process optimization, as these properties affect both the energy loss through friction in fluids such as heat and mass transfer. Knowledge of these properties for systems involving fatty substances and alcoholic solvents or hexane is of great importance to optimize and improve oils and fats purification processes by liquid-liquid extraction (LLE) and processes for obtaining vegetable oils from solid matrices by solid-liquid extraction (SLE), as well as allowing the development of large-scale extractors. Viscosity data for mixtures containing fatty esters may also be useful for the design of equipment involved in the production of biodiesel. However, viscosity data for these types of systems are scarce in the literature, and it is not always feasible to measure them in all conditions of interest. Consequently, methods for estimating these properties at different temperatures and concentrations are of great practical importance.The aim of this project is to expand the database of viscosity and density of mixtures containing fatty compounds (triacylglycerols, fatty acids, and esters) and alcoholic solvents or hexane at different compositions and temperatures. These results will be grouped with data from literature for mixtures containing triacylglycerols (TAG), fatty acids (FA) and methyl esters in order to obtain parameters not yet adjusted for the UNIFAC-VISCO model, for the calculation of viscosities. The parameters will be used to predict the viscosity of similar mixtures, formed by oils + commercial fatty acids + alcoholic solvents or hexane, and also for real mixtures of esters (biodiesel), whose data will not be part of the database used in the modeling. Predictive tests will be also conducted with other models, which are also based on group contribution method: GC-UNIMOD (for viscosity) and GCVOL (for density). (AU)

Scientific publications (7)
(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)
PINTO, CAMILA N.; FRUGOLI, GABRIEL Z.; FLORIDO, PRISCILA M.; ATZINGEN, GUSTAVO V.; RODRIGUES, CHRISTIANNE E. C.; GONCALVES, CINTIA B. Viscosities and Densities of Fatty Alcohol Mixtures from 298.15 to 338.15 K: Estimation by Kay's Rule and Prediction by the UNIFAC-VISCO and GC-UNIMOD Group Contribution Methods. JOURNAL OF CHEMICAL AND ENGINEERING DATA, v. 64, n. 5, SI, p. 1937-1947, MAY 2019. Web of Science Citations: 0.
FLORIDO, PRISCILA M.; LOBO, DEBORAH P. S.; PINTO, CAMILA N.; RODRIGUES, CHRISTIANNE E. C.; GONCALVES, CINTIA B. Physical properties of systems of interest to the edible oil industry: Viscosities and densities of model systems formed by (triacylglycerol plus fatty acid plus solvent). JOURNAL OF CHEMICAL THERMODYNAMICS, v. 113, p. 198-212, OCT 2017. Web of Science Citations: 0.
GONCALVES, CINTIA B.; RODRIGUES, CHRISTIANNE E. C.; MARCON, ELAINE C.; MEIRELLES, ANTONIO J. A. Deacidification of palm oil by solvent extraction. Separation and Purification Technology, v. 160, p. 106-111, FEB 29 2016. Web of Science Citations: 12.
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.
RODRIGUES, CHRISTIANNE E. C.; GONCALVES, CINTIA B.; MARCON, ELAINE C.; BATISTA, EDUARDO A. C.; MEIRELLES, ANTONIO J. A. Deacidification of rice bran oil by liquid-liquid extraction using a renewable solvent. Separation and Purification Technology, v. 132, p. 84-92, AUG 20 2014. Web of Science Citations: 19.
FLORIDO, PRISCILA M.; ANDRADE, IVANA M. G.; CAPELLINI, MARIA C.; CARVALHO, FERNANDA H.; ARACAVA, KEILA K.; KOSHIMA, CRISTINA C.; RODRIGUES, CHRISTIANNE E. C.; GONCALVES, CINTIA B. Viscosities and densities of systems involved in the deterpenation of essential oils by liquid-liquid extraction: New UNIFAC-VISCO parameters. JOURNAL OF CHEMICAL THERMODYNAMICS, v. 72, p. 152-160, MAY 2014. Web of Science Citations: 11.
GONCALVES, DANIEL; KOSHIMA, CRISTINA CHIYODA; NAKAMOTO, KARINA THIEMI; UMEDA, THAYLA KARLA; ARACAVA, KEILA KAZUE; GONCALVES, CINTIA BERNARDO; DA COSTA RODRIGUES, CHRISTIANNE ELISABETE. Deterpenation of eucalyptus essential oil by liquid plus liquid extraction: Phase equilibrium and physical properties for model systems at T=298.2 K. JOURNAL OF CHEMICAL THERMODYNAMICS, v. 69, p. 66-72, FEB 2014. Web of Science Citations: 15.

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