Electrically enhanced membrane filtration of waste water

Hanna Huotari, Gun Trägårdh, Marianne Nyström

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    The effect of a constant DC electric field in cross-flow membrane filtration of industrial wastewaters was studied.The best results were achieved when filtering a sample with highly charged particles or colloids.In that case the limiting flow could be increased many-fold.The conductivity of the samples studied was over 500 µ-S/cm.At such high conductivities, electrochemical gas formation occurred on the electrodes.The flux enhancement decreased significantly when the carbon fibre - carbon composite membrane worked as an electrode and the gas was produced on the membrane.The problem did not exist when a non-conductive ceramic membrane was used and an electric field was applied across the membrane.However, the high conductivity caused high-energy consumption, which is a problem with the electrofiltration of real wastewater.
    Original languageEnglish
    Title of host publicationProceedings of World Filtration Congress 8
    Publication statusPublished - 2000
    MoE publication typeA4 Article in a conference publication
    Event8th, World Filtration Congress, WFC 8 - Brighton, United Kingdom
    Duration: 3 Apr 20007 Apr 2000


    Conference8th, World Filtration Congress, WFC 8
    Country/TerritoryUnited Kingdom


    • waste water
    • filtration
    • membranes
    • membrane filtration
    • electric field
    • colloids
    • electrodes
    • electrofiltration
    • electrophoresis
    • fouling
    • ceramic membranes


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