Local permeate flux–shear–pressure relationships in a rotating disk microfiltration module: implications for global performance

Bouzerar, Roger; Ding, Luhui; Jaffrin, Michel Y.

doi:10.1016/s0376-7388(99)00348-8

Cited by 70 publications

(43 citation statements)

References 15 publications

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“…The simulation results are divided into two parts; one was with lower rotation speed (2,4,8,16, 24, 32, 40 rad/s) and another with higher rotation speed (50, 75, 100, 125, 150, 175, 200, 225, 250 rad/s). Time step of 0.00005 s and the computational time of 1 s were used for all simulations.…”

Section: Resultsmentioning

confidence: 99%

“…Concentration polarization in ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO) and also membrane fouling in microfiltration (MF) has been proven can be reduced by high shear rate [1]. The back transport of macromolecules or solute that concentrated on the membrane surface can be improved by high membrane surface shear rate [2] and thus prevent concentration polarization [3] and cake layer buildup [4]. Dynamic membrane filtration system has been introduced to increase the membrane surface shear rate by moving parts of the membrane system such as rotating disk filtration and vibration shear enhanced process (VSEP) [5].…”

Section: Introductionmentioning

confidence: 99%

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CFD Modeling of Rotating Spiral Wound Membrane with Corrugated Spacer: Shear Rate Effect

Ahmad¹,

Hong²,

Seng³

2011

JMSE-A

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Shear rate is proven in many studies to be playing an important role in reducing the concentration polarization and membrane fouling. This paper investigates the effect of rotation speed of corrugated spacer on the shear rate using computational fluid dynamics (CFD). Two small channels with the inner membrane (IM) 39 mm from the axis of rotation and outer membrane (OM) with 41.5 mm were used for the studies. The inlet pressure is set as 100 kPa and water is used to study the shear stress on the rotating membrane. The average surface shear rate between the two membranes is found out to be increasing with the rotation. The average shear rate on stationary membrane is 25,645 s -1 and increased to 46,961 s -1 at rotation speed of 250 rad/s. The shear rate of OM is larger than IM when the rotation speed is lower than 75 rad/s but the shear rate on IM is larger when rotation speed is higher than 75 rad/s. The rotation of corrugated spacer can be applied to the spiral wound membrane module to increase the shear rate and thus increase the permeate flux and reduce the concentration polarization.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CFD Modeling of Rotating Spiral Wound Membrane with Corrugated Spacer: Shear Rate Effect

Ahmad¹,

Hong²,

Seng³

2011

JMSE-A

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“…[11][12][13][14][15][16] The design and configuration of the USD device reported here were sufficiently different to warrant establishing a correlation specific for this device, and CFD simulations were used for this purpose.…”

Section: Resultsmentioning

confidence: 99%

Mimic of a large‐scale diafiltration process by using ultra scale‐down rotating disc filter

Aucamp

Gerontas

et al. 2009

Biotechnology Progress

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Ultra scale-down (USD) approach is a powerful tool to predict large-scale process performance by using very small amounts of material. In this article, we present a method to mimic flux and transmission performance in a labscale crossflow operation by an USD rotating disc filter (RDF). The Pellicon 2 labscale system used for evaluation of the mimic can readily be related to small pilot and industrial scale. Adopted from the pulsed sample injection technique by Ghosh and Cui (J Membr Sci. 2000;175:5-84), the RDF has been modified by building in inserts to allow the flexibility of the chamber volume, so that only 1.5 mL of processing material is required for each diafiltration experiment. The reported method enjoys the simplicity of dead-end mode operation with accurate control of operation conditions that can mimic well the crossflow operation in large scale. Wall shear rate correlations have been established for both the labscale cassette and the USD device, and a mimic has been developed by operating both scales under conditions with equivalent averaged shear rates. The studies using E. coli lysate show that the flux vs. transmembrane pressure profile follows a first-order model, and the transmission of antibody fragment (Fab') is independent of transmembrane pressure. Predicted flux and transmission data agreed well with the experimental results of a labscale diafiltration where the cassette resistance was considered.

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“…Other authors describe, for example, rotating [39] or vibrating [40,41] membrane modules, the addition of external forces such as ultrasound [42] or membrane surface modification [43][44][45][46] to reduce fouling at the membrane surface and to improve the flux in (pressure driven) (micro)filtration processes. Although the driving force for the membrane process described in this paper is a concentration difference instead of pressure, and thus different causes of fouling will decrease the flux of certain components through the membrane, it is interesting to investigate the above mentioned concepts in a fermentation process.…”

Section: Optimization Of In Situ Pertractionmentioning

confidence: 99%

In situ phenol removal from fed-batch fermentations of solvent tolerant Pseudomonas putida S12 by pertraction

Heerema¹,

Wierckx²,

Roelands³

et al. 2011

Biochemical Engineering Journal

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Local permeate flux–shear–pressure relationships in a rotating disk microfiltration module: implications for global performance

Cited by 70 publications

References 15 publications

CFD Modeling of Rotating Spiral Wound Membrane with Corrugated Spacer: Shear Rate Effect

CFD Modeling of Rotating Spiral Wound Membrane with Corrugated Spacer: Shear Rate Effect

Mimic of a large‐scale diafiltration process by using ultra scale‐down rotating disc filter

In situ phenol removal from fed-batch fermentations of solvent tolerant Pseudomonas putida S12 by pertraction

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