Experimental evaluation of the thermal polarization in direct contact membrane distillation using electrospun nanofiber membranes doped with molecular probes

Santoro, S. ; Vidorreta, I. ; Coelhoso, I. ; Lima, J.C. ; Desiderio, G. ; Lombardo, G. ; Drioli, E. ; Mallada, R. (Universidad de Zaragoza) ; Crespo, J. ; Criscuoli, A. ; Figoli, A.

Resumen: Membrane distillation (MD) has recently gained considerable attention as a valid process for the production of fresh-water due to its ability to exploit low grade waste heat for operation and to ensure a nearly feed concentration-independent production of high-purity distillate. Limitations have been related to polarization phenomena negatively affecting the thermal efficiency of the process and, as a consequence, its productivity. Several theoretical models have been developed to predict the impact of the operating conditions of the process on the thermal polarization, but there is a lack of experimental validation. In this study, electrospun nanofiber membranes (ENMs) made of Poly(vinylidene fluoride) (PVDF) and doped with (1, 10-phenanthroline) ruthenium (II) Ru(phen) 3 were tested at different operating conditions (i.e., temperature and velocity of the feed) in direct contact membrane distillation (DCMD). The temperature sensitive luminophore, Ru(phen) 3 , allowed the on-line and non-invasive mapping of the temperature at the membrane surface during the process and the experimental evaluation of the effect of the temperature and velocity of the feed on the thermal polarization.

Idioma: Inglés

DOI: 10.3390/molecules24030638

Año: 2019

Publicado en: Molecules 24, 3 (2019), 638 [13 pp]
ISSN: 1420-3049

Factor impacto JCR: 3.267 (2019)

Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 70 / 177 = 0.395 (2019) - Q2 - T2
Categ. JCR: BIOCHEMISTRY & MOLECULAR BIOLOGY rank: 141 / 297 = 0.475 (2019) - Q2 - T2

Factor impacto SCIMAGO: 0.698 - Pharmaceutical Science (Q1) - Chemistry (miscellaneous) (Q2) - Drug Discovery (Q2) - Physical and Theoretical Chemistry (Q2) - Organic Chemistry (Q2) - Analytical Chemistry (Q2) - Medicine (miscellaneous) (Q2) - Molecular Medicine (Q3)

Financiación: info:eu-repo/grantAgreement/ES/DGA/B008-12
Financiación: info:eu-repo/grantAgreement/ES/DGA/EU-EACEA/FPA2011-0014
Financiación: info:eu-repo/grantAgreement/ES/DGA/EU-EACEA/SGA2012-1719

Tipo y forma: Article (Published version)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)