Dynamic cross-flow filtration of oilfield produced water by rotating ceramic filter discs

Ebrahimi, Mehrdad; Schmitz, Oliver; Kerker, Steffen; Liebermann, F.; Czermak, Peter

doi:10.1080/19443994.2012.694197

Cited by 24 publications

(23 citation statements)

References 11 publications

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“…During filtration the disk can be rotated at frequencies between 5 and 25 Hz. The constant rotation of the microsieve creates a shear-effect on the membrane independent of the TMP, as opposed to tubular membrane or other non-rotating membrane systems which suffer from substantial pressure drops along the membrane in order to create sufficient shear [36,37]. The back-pulsing is achieved by reversing the flow through the microsieve with a vacuum device placed close to the surface of the rotating disk with the microsieve.…”

Section: Introductionmentioning

confidence: 98%

High-frequency flow reversal for continuous microfiltration of milk with microsieves

Verwijst

Baggerman

Liebermann³

et al. 2015

Journal of Membrane Science

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Section: Introductionmentioning

confidence: 98%

High-frequency flow reversal for continuous microfiltration of milk with microsieves

Verwijst

Baggerman

Liebermann³

et al. 2015

Journal of Membrane Science

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“…(23,13). Besides LA production, microfiltration (MF), and ultrafiltration (UF) membranes were also successfully utilized in the field of water treatment (24,25), synthesis of food ingredients (26), production of emulsions (27), recovery of viral and virus-like particles (28)(29)(30)(31)(32), etc., and showed a great potential for process engineering.…”

Section: Introductionmentioning

confidence: 99%

Lactic acid production in a membrane bioreactor system with thermophilicBacillus coagulans: fouling analysis of the used ceramic membranes

Fan

Ebrahimi

Quitmann

et al. 2015

Separation Science and Technology

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In lactic acid fermentation broth systems, membrane fouling is characterized as the crucial factor in limiting ceramic membrane lifetime and efficiency. This study aimed to find the limiting factor of this process and seek an effective solution. By quantitative analysis using resistance-in-series model, the cake layer resistance is demonstrated to be the dominant factor in a steady state. A cake compressibility index was measured as high as 2.09. Within the low transmembrane pressure range, the cake resistance was manipulated through crossflow velocity regulation to achieve a better membrane performance. A new correlation between flux and cell density was also introduced.

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“…This format allows reduced hold‐up volumes and improved permeate flux, hence decreasing the exposure of process material to shear stress during pumping and flow (Lutz, ). Mechanically agitated systems have been devised to increase shear over the membrane whereas still operating at low flow rates, for example, using an axial rotating cylinder (Holeschovsky & Cooney, ; Ji et al, ; Kroner & Nissinen, ) or a rotating disc (Ebrahimi, Schmitz, Kerker, Liebermann, & Czermak, ).…”

Section: Introductionmentioning

confidence: 99%

“…Mechanically agitated systems have been devised to increase shear over the membrane whereas still operating at low flow rates, for example, using an axial rotating cylinder (Holeschovsky & Cooney, 1991;Ji et al, 2016;Kroner & Nissinen, 1988) or a rotating disc (Ebrahimi, Schmitz, Kerker, Liebermann, & Czermak, 2013).…”

mentioning

confidence: 99%

An ultra scale‐down method to investigate monoclonal antibody processing during tangential flow filtration using ultrafiltration membranes

Fernandez‐Cerezo

Rayat

Chatel

et al. 2019

Biotech & Bioengineering

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The availability of material for experimental studies is a key constraint in the development of full‐scale bioprocesses. This is especially true for the later stages in a bioprocess sequence such as purification and formulation, where the product is at a relatively high concentration and traditional scale‐down models can require significant volumes. Using a combination of critical flow regime analysis, bioprocess modelling, and experimentation, ultra scale‐down (USD) methods can yield bioprocess information using only millilitre quantities before embarking on highly demanding full‐scale studies. In this study the performance of a pilot‐scale tangential flow filtration (TFF) system based on a membrane flat‐sheet cassette using pumped flow was predicted by devising an USD device comprising a stirred cell using a rotating disc. The USD device operates with just 2.1 cm 2 of membrane area and, for example, just 1.7 mL of feed for diafiltration studies. The novel features of the design involve optimisation of the disc location and the membrane configuration to yield an approximately uniform shear rate. This is characterised using computational fluid dynamics for a defined layer above the membrane surface. A pilot‐scale TFF device operating at ~500‐fold larger feed volume and membrane area was characterised in terms of the shear rate derived from flow rate‐pressure drop relationships for the cassette. Good agreement was achieved between the USD and TFF devices for the flux and resistance values at equivalent average shear rates for a monoclonal antibody diafiltration stage.

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Dynamic cross-flow filtration of oilfield produced water by rotating ceramic filter discs

Cited by 24 publications

References 11 publications

High-frequency flow reversal for continuous microfiltration of milk with microsieves

High-frequency flow reversal for continuous microfiltration of milk with microsieves

Lactic acid production in a membrane bioreactor system with thermophilicBacillus coagulans: fouling analysis of the used ceramic membranes

An ultra scale‐down method to investigate monoclonal antibody processing during tangential flow filtration using ultrafiltration membranes

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