Modeling of transport and separation in a thermopervaporation process

Koter, Stanisław; Kujawska, Anna; Kujawski, Wojciech

doi:10.1016/j.memsci.2015.01.044

Cited by 23 publications

(12 citation statements)

References 42 publications

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“…several types are available with specific functions [2] . The extensive range of uses of PDMS includes air separation [3] , [4] , environmental control [5] , separation of liquid mixtures [6] , wound dressings and medical applications [7] , [8] , microfluidics [9] , [10] , [11] and biochemical sensing [12] . As a result of such a diverse and extensive breadth of functionalities, a substantial amount of literature can be found on the properties of PDMS (see previous references), such as the dependence of gas permeability on membrane thickness (thus requiring reliable preparation techniques) [13] .…”

Section: Introductionmentioning

confidence: 99%

Effect of plasma surface treatment of poly(dimethylsiloxane) on the permeation of pharmaceutical compounds

Waters

Finch

Bhuiyan

et al. 2017

Journal of Pharmaceutical Analysis

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This paper addresses the modification of poly(dimethylsiloxane), i.e. PDMS, using plasma surface treatment and a novel application of the membrane created. A set of model compounds were analysed to determine their permeation through PDMS, both with and without plasma treatment. It was found that plasma treatment reduced permeation for the majority of compounds but had little effect on some compounds, such as caffeine, with results indicating that polarity plays an important role in permeation, as is seen in human skin. Most importantly, a direct correlation was observed between plasma-modified permeation data and literature data through calculation of membrane permeability (Kp) values suggesting plasma-modified silicone membrane (PMSM) could be considered as a suitable in vivo replacement to predict clinical skin permeation.

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Section: Introductionmentioning

confidence: 99%

Effect of plasma surface treatment of poly(dimethylsiloxane) on the permeation of pharmaceutical compounds

Waters

Finch

Bhuiyan

et al. 2017

Journal of Pharmaceutical Analysis

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“…To compare the results obtained under different conditions, the data were represented in terms of permeability and permselectivity which were calculated by the following expressions [26,36]: ) To calculate the coefficients of activity, the approximated four-parameter Margules equation was used, which makes it possible to take the complex interactions between the molecules of butanol and water [37] into account.…”

Section: Thermopervaporationmentioning

confidence: 99%

“…Increasing attention is being paid to thermopervaporation (TPV), which was first proposed for the removal of butanol from fermentation broths in [22] and has been successfully developed in recent years by a number of researchers [23][24][25][26][27][28]. It is emphasized in a review work on the removal of butanol in the processes of bioconversion of biomass [29] that thermopervaporation has high potential for commercial application in the removal of organic components from aqueous media.…”

Section: Introductionmentioning

confidence: 99%

High-Performance Reinforced PTMSP Membranes for Thermopervaporation Removal of Alcohols from Aqueous Media

Golubev

Borisov

Волков

et al. 2020

Membr. Membr. Technol.

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PTMSP membranes reinforced with a metal wire mesh have been fabricated and experimentally studied to increase the permeability and mechanical properties of poly(1-trimethylsilyl-1-propyne) (PTMSP) membranes in the course of thermopervaporation (TPV) removal of butanol from fermentation broths. The effect of the material wire of the mesh (stainless steel and bronze) and mesh size (30-40 μm) on the flux and separation factor in the course of thermopervaporation separation of aqueous solutions of butanol has been experimentally studied. It is shown in this work that the use of a metal wire mesh as a support instead of traditional commercial porous supports does not reduce the separation properties of a PTMSP membrane in the course of TPV removal of butanol from model fermentation mixtures. Separation modes that make it possible to obtain permeate fluxes above 1 kg m −2 h −1 have been found. It is shown in this work that the permeability coefficient of water through PTMSP membranes is 2.5 × 10 −5 mol m −2 h −1 kPa −1 and does not depend on the temperature of the feed and thickness of the membranes.

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“…(3) To compare the results obtained under different conditions, the data were presented in the terms of permeability and permselectivity which were calculated by the following expressions [24]: In the case of the acetone-butanol-ethanolwater quaternary system, the permeabilities to the components were calculated like those for binary systems. To determine the vapor pressures of the permeate and feed mixture, the activity coefficients for acetone-water and ethanol-water solutions were calculated with the use of the non-random two liquid (NRTL) model and the Aspen Plus V8.6 software.…”

Section: Thermopervaporation With Porous Condensermentioning

confidence: 99%

“…To solve the problem of generation of vacuum and low temperatures of condensation of the permeate in the process of pervaporation, a method of thermopervaporation (TPV) has been proposed for the removal of alcohols from the fermentation broths [15][16][17][18][19][20][21][22][23][24]. In this thermal gradient process, the moving force is generated by means of condensation of the permeate on a cold surface directly in the membrane module near the membrane.…”

Section: Introductionmentioning

confidence: 99%

Poly(trimethylsilylpropyne) Membranes for Removal of Alcohol Fermentation Products by Thermopervaporation with a Porous Condenser

Golubev

Borisov

Волков

et al. 2019

Membr. Membr. Technol.

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Dense membranes made of poly[1-(trimethylsilyl)-1-propyne] (PTMSP) have been studied in thermopervaporation (TPV) separation of a butanol-water binary mixture and a real acetone-butanol-ethanol (ABE) broth. When comparing PTMSP with commercially used membranes based on polydimethylsiloxane (PDMS) in the TPV process, a significant advantage of PTMSP with respect to the butanol/water selectivity is shown. The value of the separation factor for the PTMSP membrane (114) with a thickness of 61 μm is more than ninefold higher than that of the most selective Pervap 4060 commercial membrane (Sulzer Chemtech, Switzerland). The permselectivity of PTMSP membranes with respect to the butanol/water components exceeds that of commercial membranes more than fivefold. The removal of acetone, butanol, and ethanol from real fermentation broths using PTMSP membranes in the TPV process with a porous condensation surface has been studied for the first time. It has been shown that the transport and separation characteristics of PTMSP membranes in the process of separation of real fermentation broths decline with time, while demonstrating high values of the butanol/water permselectivity (4.7).

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Modeling of transport and separation in a thermopervaporation process

Cited by 23 publications

References 42 publications

Effect of plasma surface treatment of poly(dimethylsiloxane) on the permeation of pharmaceutical compounds

Effect of plasma surface treatment of poly(dimethylsiloxane) on the permeation of pharmaceutical compounds

High-Performance Reinforced PTMSP Membranes for Thermopervaporation Removal of Alcohols from Aqueous Media

Poly(trimethylsilylpropyne) Membranes for Removal of Alcohol Fermentation Products by Thermopervaporation with a Porous Condenser

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