Gas-sparged ultrafiltration using horizontal and inclined tubular membranes—A CFD study

Taha, Taha E.; Cheong, Won-Suk; Field, Robert W.; Cui, Zhanfeng

doi:10.1016/j.memsci.2005.12.063

Cited by 39 publications

(13 citation statements)

References 27 publications

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“…During the two-phase flow process, instable bubbles and flows can disturb CP and sweep away fouling layer on membrane surface. 148,149 It can be used in various PDMPs, (MBRs, 150 MF, 151 UF, 152 NF, 153 and RO 154 ) and modules 155 (tubular module, flat channel, hollow-fiber module, and submerged membrane) (see Supporting Information, Figure S2). Recently, Wibisono et al 155 reviewed related studies and applications of two-phase flow.…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

A Review on Flux Decline Control Strategies in Pressure-Driven Membrane Processes

Zhang

Luo

Ding

et al. 2015

Ind. Eng. Chem. Res.

124

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Concentration polarization (CP) and membrane fouling are two major drawbacks for pressure-driven membrane filtration processes (PDMPs) because they cause severe flux decline, which requires effective control strategies. Many articles have proposed the diverse potential applications of various control strategies in reducing CP and membrane fouling. This paper reviews various mechanisms and influencing factors on flux decline, as well as their control strategies in PDMPs. Nine effective control strategies are summarized, generalized, and compared in this paper. On the basis of their functions and influences, they can be also classified as the following: (1) modification: pretreatment of feed, modification of feed characteristics, selection and modification of membrane; (2) design: shear-enhanced filtration modules, applied field enhancement and CP drawer; (3) operation: optimization of operating parameters, hydraulic flushing and two-phase flow. Then, the general and practical guidelines are given. On the basis of this review, future research perspectives related to flux decline control strategies are proposed.

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Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

A Review on Flux Decline Control Strategies in Pressure-Driven Membrane Processes

Zhang

Luo

Ding

et al. 2015

Ind. Eng. Chem. Res.

124

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“…For example, J crit was increased 69% (from 28.8 to 48.8 L/m 2 h) while gas injector factor was varied from The reason was probably that gas sparging was more effective in a system where flux decline was dominated by concentration polarization than that coupled with fouling [14]. In addition, for controlled gas sparged ultrafiltration process, it was found that gas flow rate required for substantial improvements in permeate flux was very small [28]. A relatively low gas flow already suc- cessfully limited concentration polarization, leaving less room for further enhancement by higher gas flow.…”

Section: Effect Of Gas Sparging and Crossflow Rate On Critical Flux Amentioning

confidence: 99%

Separation of protease from yellowfin tuna spleen extract by ultrafiltration: Effect of hydrodynamics and gas sparging on flux enhancement and selectivity

H‐Kittikun

Youravong

2008

Journal of Membrane Science

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“…Membrane orientation has also been found to influence the mixing zone and flow patterns. Experimental and CFD studies on horizontal and inclined membranes have found that the length of the mixing zone increased with increasing inclination from the horizontal to the vertical 54. Flow of liquid around bubbles in inclined systems has been found to make patterns different from the ones made in horizontal systems.…”

Section: Ultrafiltrationmentioning

confidence: 99%

Review of Computational fluid dynamics applications in biotechnology processes

Sharma

Malhotra

Rathore

2011

Biotechnology Progress

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Computational fluid dynamics (CFD) is well established as a tool of choice for solving problems that involve one or more of the following phenomena: flow of fluids, heat transfer,mass transfer, and chemical reaction. Unit operations that are commonly utilized in biotechnology processes are often complex and as such would greatly benefit from application of CFD. The thirst for deeper process and product understanding that has arisen out of initiatives such as quality by design provides further impetus toward usefulness of CFD for problems that may otherwise require extensive experimentation. Not surprisingly, there has been increasing interest in applying CFD toward a variety of applications in biotechnology processing in the last decade. In this article, we will review applications in the major unit operations involved with processing of biotechnology products. These include fermentation,centrifugation, chromatography, ultrafiltration, microfiltration, and freeze drying. We feel that the future applications of CFD in biotechnology processing will focus on establishing CFD as a tool of choice for providing process understanding that can be then used to guide more efficient and effective experimentation. This article puts special emphasis on the work done in the last 10 years.

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Gas-sparged ultrafiltration using horizontal and inclined tubular membranes—A CFD study

Cited by 39 publications

References 27 publications

A Review on Flux Decline Control Strategies in Pressure-Driven Membrane Processes

A Review on Flux Decline Control Strategies in Pressure-Driven Membrane Processes

Separation of protease from yellowfin tuna spleen extract by ultrafiltration: Effect of hydrodynamics and gas sparging on flux enhancement and selectivity

Review of Computational fluid dynamics applications in biotechnology processes

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