Effect of UF Membrane Rotation on Filtration Performance Using High Concentration Latex Emulsion Solution

Takata, Kanenori; Tanida, Katsuyoshi

doi:10.3390/membranes12040422

Cited by 4 publications

(3 citation statements)

References 18 publications

(21 reference statements)

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“…Figure 9 shows the change of the line-averaged friction coefficient

at the membrane surface as a function of the dimensionless radius

for the five filtration modules with different numbers of patterns (

, 4, 8, 12, and 16). Though the rotation speed is a factor with an influence on the shear stresses [ 63 ], the friction coefficient when

rpm (equivalent to

) is presented as a representative example. In the case of the plain disk with

(P00), the friction coefficient

increases with

, reaches a peak value around

, and decreases rapidly near the stator side wall.…”

Section: Resultsmentioning

confidence: 99%

The Effect of the Rotating Disk Geometry on the Flow and Flux Enhancement in a Dynamic Filtration System

2023

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A numerical study was conducted to investigate the effect of rotating patterned disks on the flow and permeate flux in a dynamic filtration (DF) system. The DF system consists of a rotating patterned disk and a stationary housing with a circular flat membrane. The feed flow is driven by the rotating disk with the angular velocity ranging from 200 to 1000 rpm and the applied pressure difference between inlet and outlet ports. Wheel-shaped patterns are engraved on the disk surfaces to add perturbation to the flow field and improve the permeate flux in the filtration system. Five disks with varying numbers of patterns were used in numerical simulations to examine the effects of the number of patterns and the angular velocity of the disk on the flow and permeate flux in the DF system. The flow characteristics are studied using the velocity profiles, the cross-sectional velocity vectors, the vortex structures, and the shear stress distribution. The wheel-shaped patterns shift the central core layer in the circumferential velocity profile towards the membrane, leading to higher shear stresses at the membrane and higher flux compared to a plain disk. When the number of patterns on the disk exceeded eight at a fixed Reynolds number, there were significant increases in wall shear stress and permeate flux compared to a plain disk filtration system with no pattern.

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“…Figure 9 shows the change of the line-averaged friction coefficient

at the membrane surface as a function of the dimensionless radius

for the five filtration modules with different numbers of patterns (

, 4, 8, 12, and 16). Though the rotation speed is a factor with an influence on the shear stresses [ 63 ], the friction coefficient when

rpm (equivalent to

) is presented as a representative example. In the case of the plain disk with

(P00), the friction coefficient

increases with

, reaches a peak value around

, and decreases rapidly near the stator side wall.…”

Section: Resultsmentioning

confidence: 99%

The Effect of the Rotating Disk Geometry on the Flow and Flux Enhancement in a Dynamic Filtration System

2023

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“…2 and calculated using its integral form (Eq. 3) 27.

true d p_{normalr} = ρ ω^{2} r normald r

true p (r) = \frac{1}{2} ρ ω^{2} r^{2}

…”

Section: Resultsmentioning

confidence: 99%

“…( 2) and calculated using its integral form (Eq. ( 3)) [27]. Because the centrifugal field increases with the radius, the average back pressure was calculated with Eq.…”

Section: Back Pressure Caused By the Rotation Of Membrane Discmentioning

confidence: 99%

Production of Fructo‐Oligosaccharides in Membrane Bioreactor Using Rotating Ceramic Membrane Disc

Fan,

Tissen,

et al. 2024

Chemie Ingenieur Technik

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Fructo‐oligosaccharides (FOS) are often produced via enzymatic conversion in industry. Enzyme membrane bioreactor (EMBR) can enhance the catalytic efficiency by in‐situ product removal. Its major bottleneck is the fouling caused by the deposition of enzyme on membrane surface. An EMBR system with a compact rotating disc device was established for continuous FOS production. This study further investigated the influences of the membrane rotation on the flux control and enzyme activity. The speed of 600 rpm was a good compromise between flux and fouling control, which stabilized the flux at ∼80 L m−2h−1 during the process. Moreover, the rotation led to an increase in the rejection of enzymes by 20 %, compensating the loss of enzyme due to the inhomogeneous distribution of membrane pore size.

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Membrane clarification of pomegranate and carrot juices using scraped surface membrane unit, a comparative study

Zareh,

Mirsaeedghazi,

Fadavi

2024

Innovative Food Science & Emerging Technologies

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Effect of UF Membrane Rotation on Filtration Performance Using High Concentration Latex Emulsion Solution

Cited by 4 publications

References 18 publications

The Effect of the Rotating Disk Geometry on the Flow and Flux Enhancement in a Dynamic Filtration System

The Effect of the Rotating Disk Geometry on the Flow and Flux Enhancement in a Dynamic Filtration System

Production of Fructo‐Oligosaccharides in Membrane Bioreactor Using Rotating Ceramic Membrane Disc

Membrane clarification of pomegranate and carrot juices using scraped surface membrane unit, a comparative study

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