A step forward to a more efficient wastewater treatment by membrane surface modification via polymerizable bicontinuous microemulsion

Francesco Galiano, Alberto Figoli, Shamim Ahmed Deowan, Daniel Johnson, Sacide Alsoy Altinkaya, Lucia Veltri, Giorgio De Luca, Raffaella Mancuso, Nidal Hilal, Bartolo Gabriele, Jan Hoinkis

Research output: Contribution to journalArticle

Abstract

An innovative hydrophilic and anti-fouling coating material for application in membrane technology for wastewater treatment has been developed by polymerization of a polymerizable bicontinuous microemulsion (PBM) and used for surface modification of a commercial flat polyethersulfone (PES) membrane. The novel nanostructured coating has been produced using acryloyloxyundecyltriethylammonium bromide (AUTEAB) as a co-polymerizable surfactant, obtained through a synthetic method characterized by a lower cost and a higher reproducibility compared to other known polymerizable surfactants. The novel composite membranes have been characterized and compared with the uncoated PES membranes. Coated membranes resulted in a smoother surface and a higher hydrophilicity with respect to the uncoated ones, and showed a particular nano-size channel-like morphology making them highly resistant to the fouling phenomenon. The covalent anchorage of the surfactant on the membrane surface ensured the embedment of the molecule in the polymeric matrix avoiding its leaching and also leading the coated membranes to have significant antimicrobial activity, which is very important for reducing the biofouling phenomenon.All these aspects make the tailored coating material an ideal and efficient coating for modifications of commercial membrane surfaces, to be used in membrane processes in wastewater treatment.

Original languageEnglish (US)
Pages (from-to)103-114
Number of pages12
JournalJournal of Membrane Science
Volume482
DOIs
StatePublished - May 5 2015

Keywords

  • Membranes
  • Polymerizable bicontinuous microemulsions
  • Polymerizable surfactants
  • Surface modification
  • Water treatment

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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  • Cite this

    Galiano, F., Figoli, A., Deowan, S. A., Johnson, D., Altinkaya, S. A., Veltri, L., De Luca, G., Mancuso, R., Hilal, N., Gabriele, B., & Hoinkis, J. (2015). A step forward to a more efficient wastewater treatment by membrane surface modification via polymerizable bicontinuous microemulsion. Journal of Membrane Science, 482, 103-114. https://doi.org/10.1016/j.memsci.2015.02.019