Effect of temperature on the phase-separation ability of KCl in aqueous two-phase systems composed of propanols: Determination of the critical temperature and extension of the results to other salts
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Título: | Effect of temperature on the phase-separation ability of KCl in aqueous two-phase systems composed of propanols: Determination of the critical temperature and extension of the results to other salts |
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Autor/es: | Garcia-Cano, Jorge | Gomis, Alejandro | Font, Alicia | Gomis Yagües, Vicente |
Grupo/s de investigación o GITE: | Equilibrio entre Fases |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ingeniería Química | Universidad de Alicante. Instituto Universitario de Ingeniería de los Procesos Químicos |
Palabras clave: | Water | Propanol | KCl | ATPs | SLLV |
Área/s de conocimiento: | Ingeniería Química |
Fecha de publicación: | sep-2019 |
Editor: | Elsevier |
Cita bibliográfica: | The Journal of Chemical Thermodynamics. 2019, 136: 88-99. doi:10.1016/j.jct.2019.04.016 |
Resumen: | The phase-forming ability of KCl in propanols has been investigated, aiming to assess its utility in aqueous two-phase extraction. Equilibrium data of the different equilibrium regions (SLLV, SLV, LLV, and LV) of aqueous two-phase systems (ATPSs) of water + KCl + 1-propanol and water + KCl + 2-propanol have been determined at the boiling temperatures of the mixtures and 101.3 kPa. In addition, the lowest critical solution temperature (LCST) for the water + KCl + 1-propanol system was measured to be 271.2 K, and the equilibrium behavior of the system in the vicinity of the LCST (at 268.1 and 273.1 K) was also determined. Finally, using various methods such as the effective excluded volume (EEV) theory, Setchenov-type equations, and the plait point of the liquid-liquid region, different salt and alcohol systems have been studied and classified according to their ability to produce ATPSs. |
Patrocinador/es: | We would like to thank the ‘‘Dirección General de Investigación Científica y Técnica” DGICYT, of Spain for the financial support under project CTQ2014-59496. |
URI: | http://hdl.handle.net/10045/91853 |
ISSN: | 0021-9614 (Print) | 1096-3626 (Online) |
DOI: | 10.1016/j.jct.2019.04.016 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2019 Elsevier Ltd. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.jct.2019.04.016 |
Aparece en las colecciones: | INV - EQF - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2019_Garcia-Cano_etal_JChemThermodynamics_final.pdf | Versión final (acceso restringido) | 2,97 MB | Adobe PDF | Abrir Solicitar una copia |
2019_Garcia-Cano_etal_JChemThermodynamics_accepted.pdf | Accepted Manuscript (acceso abierto) | 1,96 MB | Adobe PDF | Abrir Vista previa |
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