Electrically conductive spacers for self-cleaning membrane surfaces via periodic electrolysis

Hadeel Subhi Abid, Boor Singh Lalia, Paolo Bertoncello, Raed Hashaikeh, Ben Clifford, David T. Gethin, Nidal Hilal

Research output: Contribution to journalArticle

Abstract

The use of an electrically conductive membrane has attracted significant interest in water treatment technology due to remarkable performance in fouling mitigation domain. In electrochemical systems, when external potential is applied, water electrolysis occurs and the generated gases efficiently clean the membrane surface. However, fabricating and integrating conductive membranes in current water treatment modules are challenging. The present work applies, for the first time, the electrolysis concept at the spacer component of the module rather than the membrane. Two types of materials were tested, a titanium metal spacer and a polymeric spacer. The polymeric spacer was made conductive via coating with a carbon-based ink comprised of graphene nanoplates (GNPs). A membrane system composed of the carbon coated/titanium metal spacer attached to the surface of a polyvinylidene fluoride (PVDF) microfiltration membrane and was assembled to the case of membrane module. The conductive spacers worked as an electrode (cathode) in electrochemical set-up. The membrane system was subjected to fouling and then exposed to periodic electrolysis, wherein in-situ cleaning of membrane surface by hydrogen bubbles generation at the spacer is applied.

Original languageEnglish (US)
Pages (from-to)16-23
Number of pages8
JournalDesalination
Volume416
DOIs
StatePublished - Jan 1 2017

Fingerprint

Electrolysis
Cleaning
electrokinesis
membrane
Membranes
Fouling
Titanium
Water treatment
fouling
titanium
water treatment
Carbon
Metals
Microfiltration
Graphite
metal
carbon
Ink
fluoride
Graphene

Keywords

  • Bubble generation
  • Conductive spacer
  • Electrolysis
  • Membrane fouling
  • Self-cleaning

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)
  • Water Science and Technology
  • Mechanical Engineering

Cite this

Abid, H. S., Lalia, B. S., Bertoncello, P., Hashaikeh, R., Clifford, B., Gethin, D. T., & Hilal, N. (2017). Electrically conductive spacers for self-cleaning membrane surfaces via periodic electrolysis. Desalination, 416, 16-23. https://doi.org/10.1016/j.desal.2017.04.018

Electrically conductive spacers for self-cleaning membrane surfaces via periodic electrolysis. / Abid, Hadeel Subhi; Lalia, Boor Singh; Bertoncello, Paolo; Hashaikeh, Raed; Clifford, Ben; Gethin, David T.; Hilal, Nidal.

In: Desalination, Vol. 416, 01.01.2017, p. 16-23.

Research output: Contribution to journalArticle

Abid, HS, Lalia, BS, Bertoncello, P, Hashaikeh, R, Clifford, B, Gethin, DT & Hilal, N 2017, 'Electrically conductive spacers for self-cleaning membrane surfaces via periodic electrolysis', Desalination, vol. 416, pp. 16-23. https://doi.org/10.1016/j.desal.2017.04.018
Abid HS, Lalia BS, Bertoncello P, Hashaikeh R, Clifford B, Gethin DT et al. Electrically conductive spacers for self-cleaning membrane surfaces via periodic electrolysis. Desalination. 2017 Jan 1;416:16-23. https://doi.org/10.1016/j.desal.2017.04.018
Abid, Hadeel Subhi ; Lalia, Boor Singh ; Bertoncello, Paolo ; Hashaikeh, Raed ; Clifford, Ben ; Gethin, David T. ; Hilal, Nidal. / Electrically conductive spacers for self-cleaning membrane surfaces via periodic electrolysis. In: Desalination. 2017 ; Vol. 416. pp. 16-23.
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