Fundamentals and applications of pervaporation through zeolite membranes

Bowen, Travis C.; Noble, Richard D.; Falconer, John L.

doi:10.1016/j.memsci.2004.06.059

Cited by 583 publications

(326 citation statements)

References 227 publications

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“…Although the pervaporation mechanism can be explained in different ways [5,6], most researchers are in agreement with the transport of the vapor through a non-porous (dense) film involving three successive steps (solution-diffusion mechanism) as follows [7,8]:…”

Section: Introductionmentioning

confidence: 84%

“…Formula weight of COOH(CH 2 ) 5 NH = 130, Formula weight of CO(CH 2 ) 5 Some of researchers [40,41] have reported the fractional-free volume (FFV) calculation using Eqs. (5), (5a) and (5b) as follows:…”

Section: Fractional Free Volumementioning

confidence: 99%

“…Pervaporation (PV) process is considered an economic alternative in terms of energy consumption [1,2], and has a high separation efficiency of azeotropic mixtures, close-boiling point compounds, and isomeric or heat-sensitive liquid mixtures [3][4][5][6][7]. A feed mixture contacts one side of a non-porous permselective membrane; the permeate is removed as a vapor from the other side.…”

Section: Introductionmentioning

confidence: 99%

“…The recent researches revealed that the separation of methyl acetate-methanol azeotrope can occur in a reactive distillation column, but the refined methyl acetate cannot be obtained in the primary reactive distillation column, and a secondary column is required to break up methyl acetate from methyl acetate-methanol azeotrope [3][4][5][6]. Further problems are created in commercial processes by the presence of impurities in the methanol and acetic acid feedstocks.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Pervaporation of methanol from methylacetate mixture using polyamide-6 membrane

Abdallah¹,

El–Gendi²,

El-Zanati³

et al. 2013

Desalination and Water Treatment

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A B S T R A C TThis article presents the results concerning the preparation of asymmetric polyamide-6 (PA-6) membrane using the wet phase inversion technique. The membrane was prepared from a casting dope containing 20 wt.% of PA-6 in formic acid at 18˚C. The membrane was then characterized by scanning electron microscopy and further tested for the separation of methanol/methyl acetate solutions by pervaporation. The effects of feed methanol concentration, operating temperature and the feed liquid flow rate on the membrane performance were investigated. The permeation flux increased with increasing feed methanol concentration, feed temperature, and feed flow rate. Some typical data of separation factor were: at the operating temperature of 40˚C, feed 80% methanol/20% methyl acetate and the feed liquid flow rate of 16.5, 20.6 mL/s, the separation factor was 50 and 83 respectively.

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Section: Introductionmentioning

confidence: 84%

Section: Fractional Free Volumementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Pervaporation of methanol from methylacetate mixture using polyamide-6 membrane

Abdallah¹,

El–Gendi²,

El-Zanati³

et al. 2013

Desalination and Water Treatment

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“…The gaseous permeate is subsequently condensed or swept with an inert gas thus providing the driving force for the pervaporation process, i.e. difference of partial pressure of the preferentially transported component (Bowen et al, 2004). The main advantage of pervaporation is possibility to separate mixtures forming azeotropes such as ethanolwater, isopropanol-water, n-butanol-water as well as systems containing close-boiling liquids or thermally sensitive compounds.…”

Section: Fig 1 Chemistry Of Diethyl Tartrate Synthesismentioning

confidence: 99%

Pervaporation applied for dewatering of reaction mixture during esterification

Krasiński

Wierzba

Grudzień

et al. 2016

Chemical and Process Engineering

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In this work the esterification of diethyl tartrate was studied. The research was focused on the enhancement of reversible reaction yield, which is accomplished by dewatering of the reaction mixture. The removal of water shifts the equilibrium towards the main product. Pervaporation was applied for this purpose, and results were compared to distillation. The advantages and limitations of both processes are discussed. The experimental part consists of dewatering of mixture after the reaction had reached the equilibrium, and was subsequently fed to the test rig equipped with a single zeolite membrane purchased from Pervatech B.V. Results show a significant conversion increase as a result of water removal by pervaporation. Compared to distillation no addition of organics is necessary to efficiently remove water above the azeotrope. Nevertheless, some limitations and issues which call for optimisation are pointed out. A simple numerical model is proposed to support design and sizing of the pervaporation system. Various modes of integrated system operation are also briefly discussed.

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Advanced Membrane Technology for Products Separation in Biorefinery

Zhang

2012

The Role of Green Chemistry in Biomass Processing and Conversion

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Fundamentals and applications of pervaporation through zeolite membranes

Cited by 583 publications

References 227 publications

Pervaporation of methanol from methylacetate mixture using polyamide-6 membrane

Pervaporation of methanol from methylacetate mixture using polyamide-6 membrane

Pervaporation applied for dewatering of reaction mixture during esterification

Advanced Membrane Technology for Products Separation in Biorefinery

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