Chemical cleaning of UF membranes fouled by BSA

Denis Kuzmenko, Elizabeth Arkhangelsky, Sophia Belfer, Viatcheslav Freger, Vitaly Gitis

Research output: Contribution to journalArticle

101 Citations (Scopus)

Abstract

Cleaning of MF and UF membranes is currently performed by a combination of water and air in either the forward or backward direction. When the above-mentioned cleaning methods are not effective enough to restore the flux to an acceptable level, it is necessary to clean the membranes chemically. During chemical cleaning, membranes are soaked in a solution of strong acids and bases such as hydrogen chloride (HCl) or sodium hydroxide (NaOH), or disinfection agents such as hypochlorous acid (HOCl). As a result of the effective chemical cleaning, the initial flux is restored and the membrane deemed as amenable for further operation. The shadow side of the process is an alteration of the membrane surface, which under some forced cleaning conditions results in formation of holes in the membrane skin layer. Since such a chemical cleaning shortens membrane lifetime, the next logical step is to evaluate to what extent chemical cleaning alters the membrane's surface. The parameters under investigation included various cleaning agents and their concentration, time of clean-in-place treatment and frequency of cleanings. As was found during the current study, higher dosages of cleaning agents result in complete restoration of the initial flux at the first step, but lead to more severe fouling, thus requiring faster clean-in-place operations in the long term. Another finding of the current research was that the character of the bonding between the foulant and membrane surface changes between suspended and adsorbed stages. Albeit the electrostatic character of BSA-PES surface interactions, the flux was not restored with the application of NaOH at virtually any concentration.

Original languageEnglish
Pages (from-to)323-333
Number of pages11
JournalDesalination
Volume179
Issue number1-3 SPEC. ISS.
DOIs
Publication statusPublished - Jul 10 2005
Externally publishedYes

Fingerprint

Chemical cleaning
membrane
Membranes
Cleaning
Fluxes
Hypochlorous Acid
chemical
Sodium Hydroxide
Acids
Hydrochloric Acid
Disinfection
acid
Fouling
fouling
disinfection
Restoration
hydroxide
Electrostatics
skin
Skin

Keywords

  • Chemical cleaning
  • Flux
  • Fouling
  • UF membranes

ASJC Scopus subject areas

  • Filtration and Separation

Cite this

Kuzmenko, D., Arkhangelsky, E., Belfer, S., Freger, V., & Gitis, V. (2005). Chemical cleaning of UF membranes fouled by BSA. Desalination, 179(1-3 SPEC. ISS.), 323-333. https://doi.org/10.1016/j.desal.2004.11.078

Chemical cleaning of UF membranes fouled by BSA. / Kuzmenko, Denis; Arkhangelsky, Elizabeth; Belfer, Sophia; Freger, Viatcheslav; Gitis, Vitaly.

In: Desalination, Vol. 179, No. 1-3 SPEC. ISS., 10.07.2005, p. 323-333.

Research output: Contribution to journalArticle

Kuzmenko, D, Arkhangelsky, E, Belfer, S, Freger, V & Gitis, V 2005, 'Chemical cleaning of UF membranes fouled by BSA', Desalination, vol. 179, no. 1-3 SPEC. ISS., pp. 323-333. https://doi.org/10.1016/j.desal.2004.11.078
Kuzmenko D, Arkhangelsky E, Belfer S, Freger V, Gitis V. Chemical cleaning of UF membranes fouled by BSA. Desalination. 2005 Jul 10;179(1-3 SPEC. ISS.):323-333. https://doi.org/10.1016/j.desal.2004.11.078
Kuzmenko, Denis ; Arkhangelsky, Elizabeth ; Belfer, Sophia ; Freger, Viatcheslav ; Gitis, Vitaly. / Chemical cleaning of UF membranes fouled by BSA. In: Desalination. 2005 ; Vol. 179, No. 1-3 SPEC. ISS. pp. 323-333.
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