A novel in situ membrane cleaning method using periodic electrolysis

Raed Hashaikeh, Boor Singh Lalia, Viktor Kochkodan, Nidal Hilal

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Membrane fouling is the major problem during the practical application of membrane separation processes in industry and water treatment. Therefore a search for novel efficient methods of membrane cleaning is currently of crucial importance for membrane-based technologies. The paper describes a new method of membrane cleaning, which is based on periodic electrolysis using a novel electrically conductive membrane to remove/prevent membrane fouling. The membrane consists of a thin electrically conductive layer of multi-walled carbon nanotubes (MWCNTs) deposited on the membrane[U+05F3]s surface. The deposited MWCNTs allow the membrane to function as a cathode in an electrochemical system that includes the electrically conductive membrane, the salt water as an electrolyte and a stainless steel counter anode. The efficiency of the cleaning procedure in the flux recovery has been proved with typical bio- and inorganic membrane foulants such as CaCO3 and yeast suspensions. The cleaning mechanism during the electrolysis process is explained by the evolution of gases forming micro-bubbles at the membrane surface which remove the foulant material out from the membrane. The proposed method enables in situ membrane self-cleaning, thus providing a non-destructive, continuous and renewable approach for the mitigation of the different types of membrane fouling.

Original languageEnglish
Pages (from-to)149-154
Number of pages6
JournalJournal of Membrane Science
Volume471
DOIs
Publication statusPublished - 1 Dec 2014
Externally publishedYes

Fingerprint

Electrolysis
electrolysis
cleaning
Cleaning
membranes
Membranes
Membrane fouling
fouling
Carbon Nanotubes
Carbon nanotubes
Electrodes
carbon nanotubes
Saline water
Stainless Steel
Water treatment
water treatment
Yeast
Water Purification
Electrolytes
yeast

Keywords

  • (Bio)fouling
  • Desalination
  • Electrolysis
  • Membranes
  • MWCNT
  • Self-cleaning

ASJC Scopus subject areas

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

Cite this

A novel in situ membrane cleaning method using periodic electrolysis. / Hashaikeh, Raed; Lalia, Boor Singh; Kochkodan, Viktor; Hilal, Nidal.

In: Journal of Membrane Science, Vol. 471, 01.12.2014, p. 149-154.

Research output: Contribution to journalArticle

Hashaikeh, Raed ; Lalia, Boor Singh ; Kochkodan, Viktor ; Hilal, Nidal. / A novel in situ membrane cleaning method using periodic electrolysis. In: Journal of Membrane Science. 2014 ; Vol. 471. pp. 149-154.
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