| Full text | |
| Author(s): |
Granero, Maira G.
[1]
;
Rocha, Bruna B.
[1]
;
Chaves, Matheus A.
[1]
;
Brasil, Fernanda C. G.
[1]
;
Aracava, Keila K.
[1]
;
Rodrigues, Christianne E. C.
[1]
;
Ceriani, Roberta
[2]
;
Goncalves, Cintia B.
[1]
Total Authors: 8
|
| Affiliation: | [1] Univ Sao Paulo, Dept Engn Alimentos ZEA FZEA, BR-13635900 Sao Paulo - Brazil
[2] Univ Estadual Campinas, Dept Desenvolvimento Proc & Prod, Fac Engn Quim, BR-13083852 Sao Paulo - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | CANADIAN JOURNAL OF CHEMICAL ENGINEERING; v. 92, n. 11, p. 1939-1950, NOV 2014. |
| Web of Science Citations: | 5 |
| Abstract | |
This work presents viscosities and densities of systems composed of vegetable oils (or animal fat), commercial fatty acids, ethanol, and water at several temperatures. These systems are of great importance for oil/fat deacidification by liquid-liquid extraction (LLE) using aqueous ethanol as solvent, as well as for ethylic biodiesel production. Experimental data and accurate predictive models of physical properties, such as viscosity and density, are essential for process designers mainly because they affect fluid dynamics, coefficients of heat and mass transfer, and consequently column efficiency. Experimental data for viscosities were also estimated using well-known methods, such as Kay's mixing rules (simple and modified form) and GC-UNIMOD. Despite the non-ideality inherent to the mixtures studied in this work, approximately 71% of the systems showed an acceptable estimation of their viscosities using at least one of these three models, with average relative deviations (ARD) up to 10%. A simple mixing rule, based on densities of pure compounds and their mass fractions in the mixture, was used for estimating densities with ARD values not higher than 0.54%. (AU) | |
| FAPESP's process: | 13/12735-5 - Vapor liquid equilibria and liquid liquid equilibria in the oil/fat and biodiesel industries: experimental data, modelling and simulation |
| Grantee: | Roberta Ceriani |
| Support Opportunities: | Program for Research on Bioenergy (BIOEN) - Regular Program Grants |
| FAPESP's process: | 09/11083-9 - VISCOSITIES OF MIXTURES OF SHORT-CHAIN ALCOHOLS AND FATTY COMPOUNDS: NEW PARAMETERS TO UNIFAC-VISCO MODEL |
| Grantee: | Maira Guiraldeli Granero |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 12/23203-1 - Viscosities and densities of systems of interest to the oil industry and biodiesel production: experimental data, modeling and prediction |
| Grantee: | Cintia Bernardo Gonçalves |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 09/17855-3 - Solid-liquid equilibrium, kinetic of minor compounds extraction, and design of extractors in the vegetable oils extraction with ethanol |
| Grantee: | Christianne Elisabete da Costa Rodrigues |
| Support Opportunities: | Regular Research Grants |