Thin film composite membranes with desirable support layer for MeOH/MTBE pervaporation

Abstract

A comprehensive study was performed on a new application of thin film composite membranes and selecting a stable sublayer for them as pervaporation membranes in organic solvent separation. For this purpose, four different polymeric sublayers of polyethersulfone (PES), cellulose acetate, polyacrylonitrile, and polyetherimide were prepared, and the interaction of methanol (MeOH) and methyl tert butyl ether (MTBE) with them was investigated. The contact angle results, scanning electron microscopy images, and swelling and mechanical strength measurements obviously displayed the effect of immersion in organic solvents on the sublayers. Finally, a polyamide active layer was subsequently deposited on the PES membrane surface as the stable sublayer via interfacial polymerization based on a multistep statistical optimization strategy involving fractional factorial design and a response surface method. The prepared TFC membranes were tested in the pervaporation of a MeOH/MTBE mixture and exhibited excellent performance compared with the current membranes in this context. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47519.

Highly selective carbon nanotube‐coupled graphene oxide‐incorporated polydimethylsiloxane membrane for pervaporative membrane bioreactor ethanol production

“…The permeation flux ( J , g m −2 h −1 ) and PV separation factor of ethanol–water ( α ) were calculated from the following equations: where Q (g) is the total mass of permeate collected in t hours and A (m 2 ) denotes the effective area of the membrane; and where X A and X B represent the ethanol and water concentrations (wt%) in the feed solution, respectively, and Y A and Y B represent the ethanol and water concentrations (wt%) in the permeate.…”

“…The ethanol concentrations of the feed and permeate were analyzed using a high-performance liquid chromatography system. The permeation flux (J, g m −2 h −1 ) and PV separation factor of ethanol-water (⊍) were calculated from the following equations 13,33 :…”

“…Generally, separation techniques such as distillation, solvent extraction, liquid–liquid extraction, adsorption, gas stripping, vacuum evaporation and membrane permeation can be used to recover bioethanol from fermentation broth . In situ removal of ethanol from fermentation broth has been researched using gas stripping, solvent extraction and membrane technology …”

“…4 Generally, separation techniques such as distillation, solvent extraction, liquid-liquid extraction, adsorption, gas stripping, vacuum evaporation and membrane permeation can be used to recover bioethanol from fermentation broth. [11][12][13] In situ removal of ethanol from fermentation broth has been researched using gas stripping, solvent extraction and membrane technology. 14,15 Membrane technology is one of the most effective, attractive and energy-saving separation processes that recently has been widely developed throughout the world.…”

Application of Polymer Membranes for a Purification of Fuel Oxygenated Additive. Methanol/Methyl Tert-butyl Ether (MTBE) Separation via Pervaporation: A Comprehensive Review

“…Alibakhshian et al [ 52 ] obtained polyamide by interfacial reaction of m- phenylenediamine with trimesoyl chloride and used it as a thin selective layer for composite membranes with different types of substrates: polyethersulfone, polyetherimide, cellulose acetate and polyacrylonitrile. The authors assumed that the selection of a suitable substrate is able to provide high performance.…”