Cleaning UF membranes with simple and formulated solutions

Inna Levitsky, Aviv Duek, Ronen Naim, Elizabeth Arkhangelsky, Vitaly Gitis

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The ultrafiltration membranes fouled by proteins are typically cleaned by consecutive soaking in alkali, surfactant and oxidizing solutions. We combined all three chemicals into a formulated cleaning agent and examined its efficiency to restore the water flux without damaging the membrane or enhancing protein fouling. Lower concentrations of ingredients in the composite were required to restore the water flux to the initial level. The membrane after the cleaning remained intact and subsequent filtration left trace protein amount on the membrane surface. We propose a mechanism of cleaning based on a fast penetration of alkali and oxidizing ingredients through a fouling layer and efficient micellation of detached foulants with surfactant.

Original languageEnglish
Pages (from-to)679-683
Number of pages5
JournalChemical Engineering Science
Volume69
Issue number1
DOIs
Publication statusPublished - Feb 13 2012
Externally publishedYes

Fingerprint

Cleaning
Membrane
Alkalies
Fouling
Membranes
Surface-Active Agents
Surfactant
Proteins
Protein
Fluxes
Surface active agents
Water
Ultrafiltration
Membrane Proteins
Penetration
Filtration
Consecutive
Trace
Composite
Composite materials

Keywords

  • BSA
  • Cleaning efficiency
  • Cleaning intensity
  • PES
  • Protein separation
  • PVDF

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Applied Mathematics
  • Industrial and Manufacturing Engineering

Cite this

Cleaning UF membranes with simple and formulated solutions. / Levitsky, Inna; Duek, Aviv; Naim, Ronen; Arkhangelsky, Elizabeth; Gitis, Vitaly.

In: Chemical Engineering Science, Vol. 69, No. 1, 13.02.2012, p. 679-683.

Research output: Contribution to journalArticle

Levitsky, Inna ; Duek, Aviv ; Naim, Ronen ; Arkhangelsky, Elizabeth ; Gitis, Vitaly. / Cleaning UF membranes with simple and formulated solutions. In: Chemical Engineering Science. 2012 ; Vol. 69, No. 1. pp. 679-683.
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