Modeling of the Ultrafiltration of a Dextran T500 Solution in a Tubular Membrane Module

Chikhi, Mustapha; Méniai, Abdeslam-Hassen; Balaska, Fouzia; Bencheikh-Lehocine, M.

doi:10.1002/ceat.200700281

Cited by 5 publications

(3 citation statements)

References 9 publications

(3 reference statements)

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“…Figure 9A shows that the permeate flux (J p ) of distilled water increases with the increase in the transmembrane pressure (TMP) according to the Darcy law [37]. The variations of the permeate flux (J p ) versus time using distilled and raw drinking water are presented in Figure 9B.…”

Section: Permeate Flux Variation Versus Tmp and Timementioning

confidence: 95%

Preparation of a Zirconia-Based Ceramic Membrane and Its Application for Drinking Water Treatment

et al. 2020

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This work concerns the preparation of a mineral membrane by the slip casting method based on zirconium oxide (ZrO2) and kaolin. The membrane support is produced from a mixture of clay (kaolin) and calcium carbonate (calcite) powders using heat treatment (sintering). Membrane and support characterization were performed by Scanning Electron Microscopy (SEM), X-ray Fluorescence (XRF), Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), and Raman Spectroscopy. The prepared mineral membrane was tested to treat drinking water obtained from different zones of the El Athmania (Algeria) water station (raw, coagulated, decanted, and bio filtered water). Experimental parameters such as permeate flux, turbidity, and total coliforms were monitored. The results showed that the mineral membrane was mainly composed of SiO2 and Al2O3 and the outer surface, which represented the membrane support, was much more porous than the inner surface where the membrane was deposited. The permeate flux of the raw water decreased with filtration time, due to a rejection of the organic matters contained in the raw water. Moreover, the absence of total coliforms in the filtrate and the increase in concentration in the concentrate indicate that the prepared mineral membrane can be used for drinking water treatment.

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Section: Permeate Flux Variation Versus Tmp and Timementioning

confidence: 95%

Preparation of a Zirconia-Based Ceramic Membrane and Its Application for Drinking Water Treatment

et al. 2020

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“…The dynamic viscosity of Dextran T500 solution as a function of concentration was estimated by using the correlation proposed by Chikhi et al:

μ = 0.894 \times 10^{- 3} e^{18.6 C} ((), Pa \cdot normals) .

…”

Section: Sgfvm Formulationmentioning

confidence: 99%

“…To solve the coupled model equations, different numerical approaches such as a finite element method finite difference scheme, and finite volume method have been used. In all the above numerical investigations, Navier–Stokes equation (i.e., the equation of motion with constant density and constant viscosity) and the equation of continuity were used to predict velocity profile.…”

Section: Introductionmentioning

confidence: 99%

Effects of concentration dependent local resistances and viscosity on overall permeation characteristics of a hollow‐fiber membrane: A simulation approach

Gupta

Kumar

Chand

2018

Asia-Pacific J Chem Eng

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A model is proposed to describe the hydrodynamics and mass transfer in ultrafiltration with concentration‐dependent viscosity variation in the entire flow‐field. The proposed model integrates the resistance‐in‐series model with mass, momentum, and continuity equations to scrutinize the effects of the feed concentration, velocity, and transmembrane pressure difference on the local permeate flux. A minor modification in the correlations for resistance‐in‐series model has been introduced by replacing the axial velocity terms in terms of shear force and fluid viscosity. The developed model is capable of showing how the microscopic phenomena occurring near the membrane surface affect the permeate flux. Based on the simulated results, it was observed that although higher solute concentration in the feed form a thicker concentration polarization layer, but due to greater shear force, caused by formation of more viscous fluid near the wall, net increase in secondary resistances (Rf and Rcp) is nullified, which ultimately leads to less than expected variation in permeate flux. It was also observed that tangential flow of fluid has less impact on fouling resistance (Rf) as compared with concentration polarization resistance (Rcp) because fouling takes place in the membrane pores, which has less bearing on shear stress acting on the membrane surface.

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Preparation of ZnO nanorods or SiO2 nanoparticles grafted onto basalt ceramic membrane and the use for E. coli removal from water

Saleh

Gonca

Işık

et al. 2021

Ceramics International

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Modeling of the Ultrafiltration of a Dextran T500 Solution in a Tubular Membrane Module

Cited by 5 publications

References 9 publications

Preparation of a Zirconia-Based Ceramic Membrane and Its Application for Drinking Water Treatment

Preparation of a Zirconia-Based Ceramic Membrane and Its Application for Drinking Water Treatment

Effects of concentration dependent local resistances and viscosity on overall permeation characteristics of a hollow‐fiber membrane: A simulation approach

Preparation of ZnO nanorods or SiO2 nanoparticles grafted onto basalt ceramic membrane and the use for E. coli removal from water

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