Abstract
A two-dimensional numerical model simulating colloidal particle deposition and fouling was developed by integrating fluid flow and solute mass transfer inside a reverse osmosis (RO) membrane feed channel. This model is able to animate the process of colloidal fouling accumulation by simulating the process of colloidal particles deposition on RO membrane surface and occupying the fluid zone into the porous cake zone. The cake layer was treated as homogeneous porous media domain with constant porosity. This model predicts the porous cake layer thickness distribution among membrane surface and its effects on the cake-enhanced osmotic pressure (CEOP). The performance of the RO membrane system under the influence of silica colloidal fouling in terms of initial permeate flux, channel Reynolds number, concentration of silica particles and feed spacers were investigated using this model. Model simulations are validated against experimental data of permeate fluxes with good agreement.
| Original language | English |
|---|---|
| Pages (from-to) | 24-39 |
| Number of pages | 16 |
| Journal | Journal of Membrane Science |
| Volume | 580 |
| DOIs | |
| Publication status | Published - 15 Jun 2019 |
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Keywords
- Cake-enhanced osmotic pressure (CEOP)
- Colloidal fouling
- Computational fluid dynamics (CFD)
- Critical flux
- Porous cake
ASJC Scopus subject areas
- Biochemistry
- Materials Science(all)
- Physical and Theoretical Chemistry
- Filtration and Separation
Cite this
A two-dimensional numerical model for silica colloidal fouling in a spacer-filled reverse osmosis membrane system. / Su, Xu; Li, Wende; Palazzolo, Alan; Ahmed, Shehab.
In: Journal of Membrane Science, Vol. 580, 15.06.2019, p. 24-39.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A two-dimensional numerical model for silica colloidal fouling in a spacer-filled reverse osmosis membrane system
AU - Su, Xu
AU - Li, Wende
AU - Palazzolo, Alan
AU - Ahmed, Shehab
PY - 2019/6/15
Y1 - 2019/6/15
N2 - A two-dimensional numerical model simulating colloidal particle deposition and fouling was developed by integrating fluid flow and solute mass transfer inside a reverse osmosis (RO) membrane feed channel. This model is able to animate the process of colloidal fouling accumulation by simulating the process of colloidal particles deposition on RO membrane surface and occupying the fluid zone into the porous cake zone. The cake layer was treated as homogeneous porous media domain with constant porosity. This model predicts the porous cake layer thickness distribution among membrane surface and its effects on the cake-enhanced osmotic pressure (CEOP). The performance of the RO membrane system under the influence of silica colloidal fouling in terms of initial permeate flux, channel Reynolds number, concentration of silica particles and feed spacers were investigated using this model. Model simulations are validated against experimental data of permeate fluxes with good agreement.
AB - A two-dimensional numerical model simulating colloidal particle deposition and fouling was developed by integrating fluid flow and solute mass transfer inside a reverse osmosis (RO) membrane feed channel. This model is able to animate the process of colloidal fouling accumulation by simulating the process of colloidal particles deposition on RO membrane surface and occupying the fluid zone into the porous cake zone. The cake layer was treated as homogeneous porous media domain with constant porosity. This model predicts the porous cake layer thickness distribution among membrane surface and its effects on the cake-enhanced osmotic pressure (CEOP). The performance of the RO membrane system under the influence of silica colloidal fouling in terms of initial permeate flux, channel Reynolds number, concentration of silica particles and feed spacers were investigated using this model. Model simulations are validated against experimental data of permeate fluxes with good agreement.
KW - Cake-enhanced osmotic pressure (CEOP)
KW - Colloidal fouling
KW - Computational fluid dynamics (CFD)
KW - Critical flux
KW - Porous cake
UR - http://www.scopus.com/inward/record.url?scp=85062727141&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85062727141&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2019.03.017
DO - 10.1016/j.memsci.2019.03.017
M3 - Article
VL - 580
SP - 24
EP - 39
JO - Journal of Membrane Science
JF - Journal of Membrane Science
SN - 0376-7388
ER -