Modeling of Fouling in Three Ultrafiltration Cell Configurations: Swirl, Plane and Axial Annular

Morineau-Thomas, Odile; Jaouen, Pascal; Legentilhomme, P.

doi:10.1002/1521-4125(200111)24:11<1165::aid-ceat1165>3.0.co;2-h

Cited by 3 publications

(2 citation statements)

References 12 publications

(26 reference statements)

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“…The curvature of the concentration profile depends on the flux and so does the relationship between the mass transfer coefficients [19]. The mass transfer coefficient may be obtained from experiments using Equation 8, which is rearranged from Equation 6with the assumption that the solute concentration in the permeate is very small compared to that of the feed and that at the membrane surface.…”

Section: Mass Transfer Boundary Layer and Membrane Foulingmentioning

confidence: 99%

“…The pore diffusion transport model (PDTM) developed by Tu et al (2005) allows to predict the flux decline and provides meaningful insight into the mechanisms affecting it. The model is intrinsically based on the presence of simultaneous fouling, being a joint function of CP, internal pore blocking, and gel or cake formation [19]. Although CP and internal pore fouling are effective factors for membrane fouling at the beginning of the filtration process however, according to PDTM surface fouling is insignificant since no gel layer is formed on the membrane's surface [24,25].…”

Section: Modeling Of Porous Membrane Filtration In the Presence Of Fomentioning

confidence: 99%

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Mass Transfer Mechanisms and Transport Resistances in Membrane Separation Process

Abdelrasoul¹,

Doan²,

Lohi³

et al. 2015

Mass Transfer - Advancement in Process Modelling

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One of the major obstacles preventing a more widespread application of membrane technology is the fact that the filtration performance inevitably decreases with filtration time. The understanding of causes of flux decline and the ability of predicting the flux performance is crucial for more extensive membrane applications. Therefore, this review focused on the analysis of the interrelated dynamics of membrane fouling and mass transport in the filtration/separation process. Furthermore, findings from various studies undertaken by many researchers to investigate various aspects of these complex phenomena, were analyzed and discussed. These previous studies form the foundation essential for the alleviation of adverse effect of membrane fouling and emphasize the fact that the development of a complex overlapping approach is needed. Investigations of the mechanisms of mass transfer in low and high pressure membranes, analyses of diffusion mechanisms in the membrane pore together with identifications of transport resistances resulting from membrane fouling will allow for a comprehensive understanding and in-depth knowledge of the fouling phenomenon and applicable mass transfer mechanisms.

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Section: Mass Transfer Boundary Layer and Membrane Foulingmentioning

confidence: 99%

Section: Modeling Of Porous Membrane Filtration In the Presence Of Fomentioning

confidence: 99%

Mass Transfer Mechanisms and Transport Resistances in Membrane Separation Process

Abdelrasoul¹,

Doan²,

Lohi³

et al. 2015

Mass Transfer - Advancement in Process Modelling

View full text Add to dashboard Cite

show abstract

Modeling of a Catalyzed Reaction Using Lipase Immobilized in a Poly(vinyl alcohol) Membrane

et al. 2005

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A mathematical model for the hydrolysis reaction of p‐nitro phenol laurate catalyzed by a lipase immobilized in a membrane was developed. In an earlier study this model reaction was found to show very different reaction rates when it was performed in aqueous micellar solution with free enzyme and with membrane immobilized enzyme. It was assumed that a local accumulation of substrate in the membrane is responsible for the observed rate enhancement. The conversion of p‐nitro phenol ester within the membrane was modeled by considering a combination of the convective flow through poly(vinyl alcohol) membrane pores, concentration polarization of substrate containing micelles at the membrane surface and the kinetics of the reaction with free enzymes. It was demonstrated that the model offered a comprehensive understanding of the interaction of the involved phenomena. The modeling results are in good agreement with the experimental data from 10 runs with different enzyme and substrate concentrations. The substrate concentration at the membrane surface increased by up to a factor of 3 compared to the feed concentration. This effect explains the observed rate enhancement. Moreover, the model was used to determine the unknown parameters, i.e., the intrinsic retention and the mass transfer coefficient, by fitting the model to the experimental data. The model may also be used to calculate the optimum operating conditions and design parameters of such a reactor.

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A Membrane Separation Process for Biodiesel Purification

Saleh¹

2011

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Modeling of Fouling in Three Ultrafiltration Cell Configurations: Swirl, Plane and Axial Annular

Cited by 3 publications

References 12 publications

Mass Transfer Mechanisms and Transport Resistances in Membrane Separation Process

Mass Transfer Mechanisms and Transport Resistances in Membrane Separation Process

Modeling of a Catalyzed Reaction Using Lipase Immobilized in a Poly(vinyl alcohol) Membrane

A Membrane Separation Process for Biodiesel Purification

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