Next Article in Journal
Scour at Bridge Piers Protected by the Riprap Sloping Structure: A Review
Previous Article in Journal
Use of Stainless-Steel Electrodes on the Electrochemical Oxidation of Naproxen and its Transformation Products in Surface Water
Previous Article in Special Issue
Recovery of Alkaline Earth Metals from Desalination Brine for Carbon Capture and Sodium Removal
Article

Computational Fluid Dynamics Modeling of Hollow Membrane Filtration for Concentration Polarization

1
College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
2
Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, 1239 Siping Road, Shanghai 200092, China
*
Author to whom correspondence should be addressed.
Academic Editors: Jinxing Ma and Chia-Hung Hou
Water 2021, 13(24), 3605; https://doi.org/10.3390/w13243605
Received: 20 November 2021 / Revised: 11 December 2021 / Accepted: 13 December 2021 / Published: 15 December 2021
(This article belongs to the Special Issue Advanced Technologies for Sustainable Water Treatment)
Based on CFD and film theory, filtration’s two-dimensional CFD model of the hollow membrane was established by integrating the mass transformation and the hydrodynamic transportation. Parameters of concentration polarization in the membrane channel (i.e., solute mass concentration, concentration polarization factors, and concentration polarization layer thickness) were estimated under different hydraulic conditions. In addition, the algorithm for the thickness of the concentration polarization layer has been improved. The results showed that decreasing the feed Reynolds number or increasing the transmembrane pressure can enhance the concentration polarization phenomena. Concentration polarization parameters increased sharply at the initial place (X/H < 25, where H is the entrance width, X is the distance from entrance) and then flatten out (X/H > 25) along the membrane channel; solute concentration and concentration polarization factors were arranged in a U-shape in the membrane channel’s cross-section. The improved algorithm could match well with cross section data, δ2H at X/H = 1, 25, and 200 are 0.038, 0.11, and 0.25, respectively, which can reasonably reflect the distribution of the concentration polarization phenomenon in the membrane channel. View Full-Text
Keywords: two-dimensional CFD model; concentration polarization; hollow membrane filtration; hydraulic conditions two-dimensional CFD model; concentration polarization; hollow membrane filtration; hydraulic conditions
Show Figures

Figure 1

MDPI and ACS Style

Yu, Z.; Wang, X.; Li, W.; Chen, S. Computational Fluid Dynamics Modeling of Hollow Membrane Filtration for Concentration Polarization. Water 2021, 13, 3605. https://doi.org/10.3390/w13243605

AMA Style

Yu Z, Wang X, Li W, Chen S. Computational Fluid Dynamics Modeling of Hollow Membrane Filtration for Concentration Polarization. Water. 2021; 13(24):3605. https://doi.org/10.3390/w13243605

Chicago/Turabian Style

Yu, Zhou, Xinmin Wang, Weiying Li, and Sheng Chen. 2021. "Computational Fluid Dynamics Modeling of Hollow Membrane Filtration for Concentration Polarization" Water 13, no. 24: 3605. https://doi.org/10.3390/w13243605

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop