Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/65624
Título
Thermodynamic study of ATPS involving ethyl lactate and different inorganic salts
Año del Documento
2021
Editorial
Elsevier
Descripción
Producción Científica
Documento Fuente
Separation and Purification Technology, 2021, vol. p. 119155
Zusammenfassung
In this work, three Aqueous Two-Phase Systems (ATPS) involving ethyl lactate and the inorganic salts (NH4)2SO4, K2HPO4 and NaH2PO4 have been studied. To analyse the separation process, binodal curves and tie lines were experimentally determined at T = 298.15 K and atmospheric pressure. The experimental binodal data were successfully fitted using several empirical equations: Merchuk et al., Hu et al., Han et al. and Jayapal et al., and the degree of consistency of the tie line compositions was evaluated using Othmer-Tobias and Brancoft equations. The liquid–liquid equilibria were fitted using the Pitzer-Debye-Hückel + UNIQUAC and the UNIQUAC thermodynamic models. For all systems, the modelled tie lines were very similar to the experimental ones, but the first model presented somewhat smaller deviations, which allows to conclude that long-range forces present in these systems with strong salts should be considered.
Palabras Clave
UNIQUAC
Pitzer–Debye–Hückel
ATPS
Ethyl lactate
Modelling
ISSN
1383-5866
Revisión por pares
SI
Patrocinador
This work was financially supported by: Base Funding - UIDB/ 50020/2020 of the LSRE-LCM - FCT/MCTES (PIDDAC), Xunta de Galicia Grant ED481B-2017/019 and FCT Grant CEECIND/02646/2017.
Version del Editor
Propietario de los Derechos
Elsevier
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
restrictedAccess
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