On the mechanism of separation of ethanol/water mixtures by pervaporation II. Experimental concentration profiles

Mulder, M.H.V.; Franken, A.C.M.; Smolders, C.A.

doi:10.1016/s0376-7388(00)83133-6

Cited by 100 publications

(14 citation statements)

References 13 publications

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“…Actual concentration profiles of pure penetrant in the membrane were reported under steady state pervaporation conditions by several researchers (Kim and Kammermeyer, 1970;Paul and Ebra-Lirna, 1971;Tock et al, 1974;Aptel et al, 1974;Mulder et al, 1985;and Thomas et al, 1989). In the present study experimental binary penetrant profiles are established under steady state pervaporation condition in the membrane by using a stack of symmetric aromatic polyamide membranes.…”

Section: Pervaporation Of Binary Liquid Mixturesmentioning

confidence: 72%

Possibility of Concentration Polarization Occurring Inside the Membrane During Steady State Pervaporation

Tyagi

Fouda

Matsuura

1996

Chemical Engineering Communications

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Mathematical equations are derived for describing the pervaporation transport of pure penetrant through polymeric membranes by assuming the chemical potential gradient as the driving force for the flow of penetrant. An imaginary phase (liquid or vapor) is assumed to be present and is in thermodynamic equilibrium with the membrane phase for deriving these equations, The mathematical equations obtained are similar to those derived by Okada and Matsuura (1991) using the pore-flow modeL The possibility of concentration polarization occurring inside the membrane is predicted based on the analysis of binary mixture pervaporation. Experimental profiles of binary penetrant concentration in the membrane are established and these profiles substantiate the prediction of concentration polarization occurring inside the membrane. Pervaporation and sorption data from liquid and vapor phase at 25°C are reported for the acetic acid-water-polyamide system.

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Section: Pervaporation Of Binary Liquid Mixturesmentioning

confidence: 72%

Possibility of Concentration Polarization Occurring Inside the Membrane During Steady State Pervaporation

Tyagi

Fouda

Matsuura

1996

Chemical Engineering Communications

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“…Therefore, we consider both species as a solvent, especially when the molar fraction is close to 0.5. Mulder and Smolders mentioned in their work that excess properties are strongly dependent on concentration and indicated that X 12 can be determined from excess Gibbs energy 26 . Coquelet et al 8 in their work also applied an X 12 dependent on volume fraction ( 1 and  2 ).…”

Section: (15)mentioning

confidence: 99%

Volumetric Properties of Furan and 2-5-Dimethylfuran in Different Industrial Solvents at Temperatures from 278 to 343 K

et al. 2021

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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“…Many digital models were worked out to determine the diffusion coefficient, from the result of material flow in transitory mode. These models are based on analytical expressions weighted by parameters (Stern & Saxena 1980, Mulder & Smolders 1984, Mulder et al 1985.…”

Section: Introductionmentioning

confidence: 99%

Pervaporative transfer modeling through dense membranes validation of the scattered packet method

Essamri

Gouri

Zouair

et al. 2014

IJAC

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The study of the diffusion through a homogeneous dense film, covers practically and theoretically a fundamental interest. In pervaporation (membrane separation process) the diffusion is the limiting step in the operation of the transfer and thus directly influences the performance of the membrane. The knowledge of the diffusion coefficient of an aqueous solution in a membrane makes it possible to elucidate the mechanism of this elementary step of pervaporation. Several methods were used to determine the diffusivity of a compound through a dense membrane (differential permeation, kinetic of sorption). In this work, we tried to validate the method of the scattered packet. It is about a digital method, of cellular automaton, which produces really the process of diffusion through a membrane using the second law of Fick in which the diffusion coefficient is considered constant. Permeation flux data obtained by simulation allowed validating this method. By using the method of relaxation time and the method of maximum slope, can thus determine the coefficient of diffusion of diffusing species through the membrane. Keywords: Diffusivity, Membrane, Pervaporation, Scattered Packet Method.

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On the mechanism of separation of ethanol/water mixtures by pervaporation II. Experimental concentration profiles

Cited by 100 publications

References 13 publications

Possibility of Concentration Polarization Occurring Inside the Membrane During Steady State Pervaporation

Possibility of Concentration Polarization Occurring Inside the Membrane During Steady State Pervaporation

Volumetric Properties of Furan and 2-5-Dimethylfuran in Different Industrial Solvents at Temperatures from 278 to 343 K

Pervaporative transfer modeling through dense membranes validation of the scattered packet method

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