Vapor phase interfacial polymerization: a method to synthesize thin film composite membranes without using organic solvents

Paseta, L. ; Echaide-Górriz, C. ; Téllez, C. (Universidad de Zaragoza) ; Coronas, J. (Universidad de Zaragoza)

Resumen: Thin film composite membranes (TFC) of polyamide (PA) prepared by interfacial polymerization (IP) between a diamine and an acyl chloride are applied to industrial nanofiltration and reverse osmosis. Water, to dissolve the diamine, and n-hexane, to dissolve the acyl chloride, solvents are involved in the IP process. Eliminating the use ofn-hexane would be crucial to produce a greener TFC membrane synthesis method. This is achieved here by carrying out an interfacial polymerization from the vapor phase. First, the membrane support was impregnated with the aqueous diamine solution. Second, the support with the diamine was contacted with vapors of the acyl chloride to unchain the IP reaction. Besides the absence ofn-hexane, acyl chloride was applied more efficiently avoiding its loss during the cleaning operations carried out in the typical IP process. These membranes were applied in the nanofiltration of simulated micropollutants in water (rose Bengal, sunset yellow and acridine orange dyes), with higher water permeance (up to 3.3 L·m-2·h-1·bar-1) than that of conventional TFC membranes and dye rejections higher than 94% in all cases.

Idioma: Inglés

DOI: 10.1039/D1GC00236H

Año: 2021

Publicado en: GREEN CHEMISTRY 23, 6 (2021), 2449-2456
ISSN: 1463-9262

Factor impacto JCR: 11.034 (2021)

Categ. JCR: GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY rank: 6 / 47 = 0.128 (2021) - Q1 - T1
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 23 / 179 = 0.128 (2021) - Q1 - T1

Factor impacto CITESCORE: 15.1 - Environmental Science (Q1)

Factor impacto SCIMAGO: 1.937 - Pollution (Q1) - Environmental Chemistry (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA-FSE/T43-20R
Financiación: info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/PID2019-104009RB-I00/AEI/10.13039/501100011033
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2016-77290-R

Tipo y forma: Article (Published version)

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