A new coiled hollow-fiber module design for enhanced microfiltration performance in biotechnology

Luque, Susana; Mallubhotla, Hanuman; Gehlert, Gunther; Kuriyel, Ralf; Dzengeleski, Stephen; Pearl, Steven; Belfort, Georges

doi:10.1002/(sici)1097-0290(19991105)65:3<247::aid-bit1>3.0.co;2-h

Cited by 58 publications

(27 citation statements)

References 20 publications

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“…[8][9][10]. Improvements in F were small during the period of rapid flux decline (the first 5-10 min) then increased until the permeate flux became 'quasi'-steady approximately 30 min into the filtration (Fig.…”

Section: Permeate Fluxmentioning

confidence: 95%

“…Several methods have been developed to reduce specific cake resistance, mass of the deposited cake layer, and product rejection. These methods include changes to hydrodynamics via filtration module design [8][9][10], introduction of periodic back pulsing to break up the cake layer [11,12], and feed pretreatments such as pH adjustment [4,13].…”

Section: Introductionmentioning

confidence: 99%

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Improving permeate flux and product transmission in the microfiltration of a bacterial cell suspension by flocculation with cationic polyelectrolytes

Aspelund

Rozeboom²,

Heng

et al. 2008

Journal of Membrane Science

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Section: Permeate Fluxmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Improving permeate flux and product transmission in the microfiltration of a bacterial cell suspension by flocculation with cationic polyelectrolytes

Aspelund

Rozeboom²,

Heng

et al. 2008

Journal of Membrane Science

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“…Although for heat exchangers and low pressure membrane processes, the process has been well studied yet further studies are required to establish the effects for MD [14][15][16][17] Pulsating and intermittent flows…”

Section: Induction Of Secondary Flowmentioning

confidence: 99%

Effect of module design and flow patterns on performance of membrane distillation process

Ali

Aimar

Drioli

2015

Chemical Engineering Journal

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h i g h l i g h t sEffect of fiber configurations and flow patterns on MD performance has been studied. Undulating fibers show best performance in terms of flux at low feed flow rates. Helical modules and intermittent flows exhibit better energy efficiency. Intermittent and pulsatile flows are the best optimum. a b s t r a c tThe present study highlights the effect of different hollow fiber membrane configurations and flow patterns on performance of membrane distillation (MD) process. The modules with helical and wavy conformations have been tested under various hydrodynamic conditions and their performance has been compared with conventional straight fiber modules. The effect of flow patterns has been studied by applying the intermittent and pulsating flows to straight hollow fiber membranes. A flux enhancement of 47% and 52% with respect to the straight fibers has been observed for helical and wavy configurations, respectively, though packing density of such modules is significantly less than their straight counterparts. For intermittent flow, an improvement of $30% has been recorded. The difference is more prominent at low flow rates and approaches to the straight fiber performance under steady flow at high Reynolds numbers (Re) for all hollow fiber configurations and flow patterns studied. The intermittent flow and wavy fibers exhibit an energy efficiency enhancement of $180% and $90% over their conventional counter parts, respectively. In terms of surface and volume based enhancement factor and packing density, intermittent and pulsating flow exhibited the most optimal performance.

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“…Earlier work towards this objective includes the adoption of conical-shaped rotors (Vogel and Kroner 1999), cylindrical Taylor vortex systems (Parnham and Davis 1995), rotating disk filters (Lee et al 1995) and helical coiled Dean vortex devices (Luque et al 1999;Gehlert et al 1998). Recently, Auddy et al (2004) developed a stainless steel rectangular cross-flow cell that worked as a turbulence promoter to enhance the permeate flux in a nanofiltration system.…”

Section: Challenging the Fouling Of Membranesmentioning

confidence: 99%

Applications of membrane techniques for purification of natural products

Chase

2010

Biotechnol Lett

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A new coiled hollow-fiber module design for enhanced microfiltration performance in biotechnology

Cited by 58 publications

References 20 publications

Improving permeate flux and product transmission in the microfiltration of a bacterial cell suspension by flocculation with cationic polyelectrolytes

Improving permeate flux and product transmission in the microfiltration of a bacterial cell suspension by flocculation with cationic polyelectrolytes

Effect of module design and flow patterns on performance of membrane distillation process

Applications of membrane techniques for purification of natural products

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