Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Fouling Mechanism of Microfiltration/Ultrafiltration by Macromolecules and a Suppression Strategy from the Viewpoint of the Hydration Structure at the Membrane Surface

  • Akamatsu, Kazuki (Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University) ;
  • Nagumo, Ryo (Department of Engineering, Nagoya Institute of Technology) ;
  • Nakao, Shin-ichi (Department of Environmental Chemistry and Chemical Engineering, School of Advanced Engineering, Kogakuin University)
  • Received : 2020.06.24
  • Accepted : 2020.07.06
  • Published : 2020.08.31
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Abstract

This short review focuses on fouling by proteins and macromolecules in microfiltration/ultrafiltration. First, an experimental system that enables investigation of how the extent of the adsorption of proteins and macromolecules on membrane surfaces contributes to a decrease in filtrate flux in microfiltration/ultrafiltration is described. Using this system, a causal relationship - not a correlation - indicating that adsorption results in a decrease in filtrate flux could be clearly demonstrated in some cases. Second, a hydration structure at the membrane surface that can suppress adsorption is discussed, inspired by biomaterial research. In their hydrated states, polymers with low-fouling properties have water molecules with a particular structure. Finally, some successful examples of the development of low-fouling membranes via surface modification using low-fouling polymers are discussed.

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References

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