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Infrared Spectroscopic Analysis of the Inorganic Deposits from Water in Domestic and Technical Heat Exchangers

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  • Johannes Kiefer

    (Technische Thermodynamik, Universität Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany
    School of Engineering, University of Aberdeen, Aberdeen AB24 3UE, UK
    Erlangen Graduate School in Advanced Optical Technologies, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91052 Erlangen, Germany
    MAPEX Center for Materials and Processes, Universität Bremen, Bibliothekstr. 1, 28359 Bremen, Germany)

  • Alexander Stärk

    (Technische Thermodynamik, Universität Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany)

  • Agnita Lynda Kiefer

    (Technische Thermodynamik, Universität Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany)

  • Heike Glade

    (Technische Thermodynamik, Universität Bremen, Badgasteiner Str. 1, 28359 Bremen, Germany)

Abstract

The deposition of insoluble inorganic substances on heat exchanger surfaces has a strong negative influence on the heat transfer and thus on the performance of the apparatus and the process. The analysis of the deposits is a crucial step towards the development of suitable technologies for scaling mitigation and prevention. Such analysis, however, is challenging and often requires advanced instrumentation and sample preparation. To overcome this problem, we present a straightforward analytical approach based on Fourier-transform infrared (FTIR) spectroscopy. We demonstrate that FTIR spectroscopy is a powerful tool for the chemical analysis of inorganic deposits. For example, it can identify the common anions in scales such as sulfates and carbonates. It can even distinguish between salts with the same anion but different cations such as calcium and sodium. Test measurements are performed on the deposits from a domestic water cooker and from the evaporator of a seawater desalination pilot plant.

Suggested Citation

  • Johannes Kiefer & Alexander Stärk & Agnita Lynda Kiefer & Heike Glade, 2018. "Infrared Spectroscopic Analysis of the Inorganic Deposits from Water in Domestic and Technical Heat Exchangers," Energies, MDPI, vol. 11(4), pages 1-8, March.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:4:p:798-:d:138842
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    Cited by:

    1. Jannatul Rumky & Ekaterina Bandina & Eveliina Repo, 2023. "Behavior of Sludge Dewaterability and Nutrient Contents after Treatment with Cellulose-Based Flocculants with Combined PTS and Catalytic Behavior of Sludge towards Tetracycline Degradation," Resources, MDPI, vol. 12(2), pages 1-14, January.

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