Electrochemical Oxygen Removal from Seawater in Industrial Scale Using Silver Cathode

Utsav R. Dotel, Kai Vuorilehto, Magne O. Sydnes, Hans Urkedal, Tor Hemmingsen*

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    2 Citations (Scopus)

    Abstract

    In this study, electrochemical removal of oxygen from seawater in industrial scale is demonstrated. A test rig with an industrial scale electrochemical cell has been constructed and tested with filtrated oxygen rich seawater. The electrochemical cell was comprised of a silver mesh cathode and an iridium oxide anode with a cation exchange membrane. The effects of flow rate, pressure, and applied voltage on oxygen removal efficiency and resulting current were studied. Also, the differential pressure between the anode and cathode chambers affected the performance of the cell, and an overpressure of 0.20-0.30 bar in the anode chamber was optimal in order to obtain maximum oxygen removal. It was possible to achieve an oxygen concentration lower than 5 ppb in seawater at a flow rate of 5 L min-1. No scaling or biofilm problems were observed during a 200 h test period.

    Original languageEnglish
    Pages (from-to)8954-8960
    Number of pages7
    JournalIndustrial and Engineering Chemistry Research
    Volume56
    Issue number31
    DOIs
    Publication statusPublished - 9 Aug 2017
    MoE publication typeA1 Journal article-refereed

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