Determining Zeta Potential of Magnetite Particles in PWR Secondary Side Water Treated with Ammonia or Ethanolamine by Using Streaming Potential Technique

Essi Jäppinen (Corresponding author), Konsta Sipilä, Timo Saario

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    Abstract

    Magnetite (Fe3O4) particles originating from secondary side carbon steel tubing and components of a PWR plant can cause different harmful corrosion problems when they deposit onto the steam generator (SG) surfaces. Magnetite deposits situated on the steam generator tubes, tube support plates and other components create a favourable environment for corrosion as different impurities are enriched beneath the deposits. Deposits also hinder the water flow and heat transfer. The susceptibility to deposition can be evaluated by measuring the difference between the surface charge of magnetite particles and SG surfaces. The sign and the magnitude of the surface charge can be described with zeta potential. There are several methods for determining zeta potential but most of them are only available for room temperature measurements. In this study, streaming potential technique is used for determining the zeta potential of magnetite particles in secondary side PWR water adjusted with ammonia or ethanolamine to pHRT=9.8 as a function of temperature (RT to 260°C). These values are compared to values previously measured with pHRT=9.2. The room temperature values for ammonia adjusted measurement solution are also compared to values measured with commercial zeta potential measurement equipment.
    Original languageEnglish
    Title of host publication20th International Conference on Water Chemistry of Nuclear Reactor Systems (NPC 2016)
    PublisherNuclear Institute - NI
    Pages1251-1259
    Volume2
    ISBN (Print)978-1-51086089-6
    Publication statusPublished - Oct 2016
    MoE publication typeB3 Non-refereed article in conference proceedings
    Event20th International Conference on Water Chemistry of Nuclear Reactor Systems, NPC 2016 - Brighton, United Kingdom
    Duration: 2 Oct 20167 Oct 2016

    Conference

    Conference20th International Conference on Water Chemistry of Nuclear Reactor Systems, NPC 2016
    Abbreviated titleNPC 2016
    CountryUnited Kingdom
    CityBrighton
    Period2/10/167/10/16

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  • Cite this

    Jäppinen, E., Sipilä, K., & Saario, T. (2016). Determining Zeta Potential of Magnetite Particles in PWR Secondary Side Water Treated with Ammonia or Ethanolamine by Using Streaming Potential Technique. In 20th International Conference on Water Chemistry of Nuclear Reactor Systems (NPC 2016) (Vol. 2, pp. 1251-1259). Nuclear Institute - NI.