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Modeling and simulation of stirred dead end ultrafiltration process using the aspen engineering suite / Sabuj Das in Industrial & engineering chemistry research, Vol. 48 N° 9 (Mai 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4428–4439 Titre : Modeling and simulation of stirred dead end ultrafiltration process using the aspen engineering suite Type de document : texte imprimé Auteurs : Sabuj Das, Auteur ; Prabirkumar Saha, Auteur ; G. Pugazhenthi, Auteur Année de publication : 2009 Article en page(s) : pp. 4428–4439 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Pressure-driven  membrane  process  Stirred  cell  Aspen  engineering  suite Résumé : Simulation of pressure-driven membrane process has been carried out considering two different types of solute (silica and dextran) and membrane (partially permeable and totally retentive) in a stirred cell using the Aspen Engineering Suite. One solute, silica, exerts negligible osmotic pressure but the other, dextran, offers adequate osmotic pressure. Silica is very susceptible to form a gel layer while dextran has no such tendency. Two types of membrane are considered for this work. One membrane completely separates solute from the solvent (totally retentive membrane) and the other does it partially (partially permeable membrane). The second type of membrane is regarded as highly compact granulated particle layer which has a different range of porosity. So the diffusivity within the membrane layer is referred to as hindered back diffusion. Osmotic pressure model and gel polarization model have been considered for batch and continuous mode operation. Silica suspension has been simulated with totally retentive membrane and dextran solution is simulated with partially retentive membrane in batch and continuous mode, respectively. The effect of applied pressure, stirring speed, and initial feed concentration on permeate flux, membrane surface concentration, permeate concentration, and true and observed rejection have been studied. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801293d [article] Modeling and simulation of stirred dead end ultrafiltration process using the aspen engineering suite [texte imprimé] / Sabuj Das, Auteur ; Prabirkumar Saha, Auteur ; G. Pugazhenthi, Auteur . - 2009 . - pp. 4428–4439. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4428–4439 Mots-clés : Pressure-driven  membrane  process  Stirred  cell  Aspen  engineering  suite Résumé : Simulation of pressure-driven membrane process has been carried out considering two different types of solute (silica and dextran) and membrane (partially permeable and totally retentive) in a stirred cell using the Aspen Engineering Suite. One solute, silica, exerts negligible osmotic pressure but the other, dextran, offers adequate osmotic pressure. Silica is very susceptible to form a gel layer while dextran has no such tendency. Two types of membrane are considered for this work. One membrane completely separates solute from the solvent (totally retentive membrane) and the other does it partially (partially permeable membrane). The second type of membrane is regarded as highly compact granulated particle layer which has a different range of porosity. So the diffusivity within the membrane layer is referred to as hindered back diffusion. Osmotic pressure model and gel polarization model have been considered for batch and continuous mode operation. Silica suspension has been simulated with totally retentive membrane and dextran solution is simulated with partially retentive membrane in batch and continuous mode, respectively. The effect of applied pressure, stirring speed, and initial feed concentration on permeate flux, membrane surface concentration, permeate concentration, and true and observed rejection have been studied. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801293d