Teflon AF2400/Ultem composite hollow fiber membranes for alcohol dehydration by high‐temperature vapor permeation

Hua, Ding; Chung, Tai‐Shung; Shi, Gui Min; Fang, Chao

doi:10.1002/aic.15158

Cited by 21 publications

(23 citation statements)

References 47 publications

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“…This is probably due to the fact that the former has a more porous substructure and a thinner dense selective layer than the latter. The flux value of 13.41 kg/m 2 h obtained from the dual‐layer hollow fiber membrane is one of the highest values in the literature . As a result, the dual‐layer hollow fiber membrane is a preferred choice among these four membranes for dehydrating the MSD IPA waste.…”

Section: Resultsmentioning

confidence: 91%

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Dehydration of industrial isopropanol (IPA) waste by pervaporation and vapor permeation membranes

Zuo

Hua

Maricar³

et al. 2017

J of Applied Polymer Sci

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We have investigated the feasibility of using polymeric membranes for the dehydration of industrial isopropanol (IPA) waste from MSD International GmbH by pervaporation and vapor permeation in this study. Four types of membranes were employed. They were (1) thin‐film composite hollow fiber consisting of a polyamide selective layer and a polyetherimide Ultem® substrate, (2) dual‐layer hollow fiber comprising an outer cellulose triacetate (CTA) layer and an inner Ultem® substrate, and (3) two commercially available Sulzer flat‐sheet membranes. The dual‐layer hollow fiber shows the most balanced separation performance in terms of flux and separation factor for the dehydration of industrial IPA waste because it has a porous substructure and a thin dense selective layer. Under vapor permeation tests at 125 °C, it has a flux of 13.41 kg/m2 h and a separation factor of 1332. This study demonstrates the great potential of using polymeric membranes to dehydrate industrial IPA waste for pharmaceutical and electronic industries. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45086.

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Section: Resultsmentioning

confidence: 91%

“…Figure illustrates the lab‐scale vapor permeation setup . A 5 L feed solution in the feed tank was firstly heated up to 125 °C to generate feed vapor.…”

Section: Methodsmentioning

confidence: 99%

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Dehydration of industrial isopropanol (IPA) waste by pervaporation and vapor permeation membranes

Zuo

Hua

Maricar³

et al. 2017

J of Applied Polymer Sci

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“…In some cases, several thin layers of the same material are overcoated to build up the dense permselective layer. A number of reports describe the potential advantages of stacking layers of different polymeric permselective materials to form the dense permselective layer of the composite membrane . For example, Membrane Technology and Research, Inc. described a multilayer membrane consisting of a layer of APFP on top of a cellulose ester layer .…”

Section: Membrane Materials For Solvent Drying By Pv and Vpmentioning

confidence: 99%

Review: membrane materials for the removal of water from industrial solvents by pervaporation and vapor permeation

Vane

2018

J of Chemical Tech & Biotech

113

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Organic solvents are widely used in a variety of industrial sectors. Reclaiming and reusing the solvents may be the most economically and environmentally beneficial option for managing spent solvents. Purifying the solvents to meet reuse specifications can be challenging. For hydrophilic solvents, water must be removed prior to reuse, yet many hydrophilic solvents form hard‐to‐separate azeotropic mixtures with water. Such mixtures make separation processes energy‐intensive and cause economic challenges. The membrane processes pervaporation (PV) and vapor permeation (VP) can be less energy‐intensive than distillation‐based processes and have proven to be very effective in removing water from azeotropic mixtures. In PV/VP, separation is based on the solution–diffusion interaction between the dense permselective layer of the membrane and the solvent/water mixture. This review provides a state‐of‐the‐science analysis of materials used as the selective layer(s) of PV/VP membranes in removing water from organic solvents. A variety of membrane materials, such as polymeric, inorganic, mixed matrix, and hybrid, have been reported in the literature. A small subset of these is commercially available and highlighted here: poly (vinyl alcohol), polyimides, amorphous perfluoro polymers, NaA zeolites, chabazite zeolites, T‐type zeolites, and hybrid silicas. The typical performance characteristics and operating limits of these membranes are discussed. Solvents targeted by the United States Environmental Protection Agency for reclamation are emphasized and ten common solvents are chosen for analysis: acetonitrile, 1‐butanol, N,N‐dimethyl formamide, ethanol, methanol, methyl isobutyl ketone, methyl tert‐butyl ether, tetrahydrofuran, acetone, and 2‐propanol. Published 2018. This article is a U.S. Government work and is in the public domain in the USA.

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“…Hua et al [45] designed the Teflon AF2400/Ultem composite HF membrane with good vapor permeation separation performance together with excellent thermal stability for alcohol dehydration. The composite HF membranes were fabricated by dip coating a Teflon AF2400 layer on the outer surface of Ultem HFs.…”

Section: Saline Water Treatmentmentioning

confidence: 99%

Thin Film Composite and/or Thin Film Nanocomposite Hollow Fiber Membrane for Water Treatment, Pervaporation and Gas/Vapor Separation

Khulbe

Matsuura

2018

Preprint

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Nowadays asymmetric thin film composite (TFC) polymeric hollow fiber (HF) membranes are extensively used in industrial gas/vapor separations, water treatment etc. There are numerous advantages to use hollow fibers such as: low energy requirements, simplicity of operation, and high specificity. In the present article we discuss the progress made during the past decade in the preparation of the HF substrate and preparation/modification of the thin selective layer. Their applications in water treatment, dehydration of alcohols via pervaporation and gas/vapor separation are also demonstrated.

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Teflon AF2400/Ultem composite hollow fiber membranes for alcohol dehydration by high‐temperature vapor permeation

Cited by 21 publications

References 47 publications

Dehydration of industrial isopropanol (IPA) waste by pervaporation and vapor permeation membranes

Dehydration of industrial isopropanol (IPA) waste by pervaporation and vapor permeation membranes

Review: membrane materials for the removal of water from industrial solvents by pervaporation and vapor permeation

Thin Film Composite and/or Thin Film Nanocomposite Hollow Fiber Membrane for Water Treatment, Pervaporation and Gas/Vapor Separation

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