Rough or wiggly? Membrane topology and morphology for fouling control

  title={Rough or wiggly? Membrane topology and morphology for fouling control},
  author={Bowen Ling and Ilenia Battiato},
  journal={Journal of Fluid Mechanics},
  pages={753 - 780}
During filtration in reverse osmosis membranes (ROM), the system performance is dramatically affected by membrane fouling which causes a significant decrease in permeate flux as well as an increase in the energy input required to operate the system. In this work, we develop a model, able to dynamically capture foulant evolution, that couples the transient Navier–Stokes and the advection–diffusion equations, with an adsorption–desorption equation for the foulant accumulation. The model is… 
Dynamic Modeling of Fouling in Reverse Osmosis Membranes
A customized solver was developed under the open source finite volume simulator OpenFOAM to solve transient Navier–Stokes, advection–diffusion, and adsorption–desorption equations for foulant accumulation and two permeate flux reduction models at the membrane boundary were implemented.
Understanding the Role of Pattern Geometry on Nanofiltration Threshold Flux
It is suggested that the PFR should be higher than 1 to produce patterned membranes with maximal threshold flux values, as the percentage of vortex-forming area within the pattern grooves increases, and vortex-induced shielding increases.
Effects of Particles Diffusion on Membrane Filters Performance
Membrane filtration fouling is a very complex process and is determined by many properties such as the membrane internal morphology, membrane pore structure, flow rate and contaminant properties. In
Dispersion due to combined pressure-driven and electro-osmotic flows in a channel surrounded by a permeable porous medium
The combined electro-osmotic and pressure-driven flows (PDFs) have pronounced impacts on the solute transport in permeable porous media, particularly mixing and separation processes. However, the
Studying Fluid Characteristics Atop Surface Patterned Membranes via Particle Image Velocimetry
Surface patterning is a recent promising approach to promote performance of pressure-driven membranes in water treatment and desalination. Nevertheless, knowledge about foulant deposition mechanisms,


A combined network model for membrane fouling.
Flow and fouling in membrane filters: effects of membrane morphology
This work formulate mathematical models that can account for the membrane internal morphology (internal structure, pore size and shape, etc); describe fouling of membranes with specific morphology; and make some predictions as to what type of membrane morphology might offer optimum filtration performance.
Flow and fouling in a pleated membrane filter
Pleated membrane filters are widely used in many applications, and offer significantly better surface area to volume ratios than equal-area unpleated membrane filters. However, their filtration