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  • Magnetic Fractions of PM2.5, PM2.5-10, and PM10 from Coal Fly Ash as Environmental Pollutants

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    Fomenko516944-Published.pdf (9.430Mb)
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    Version of Record (VoR)
    Author(s)
    Fomenko, Elena
    Anshits, Natalia N
    Solovyov, Leonid A
    Knyazev, Yuriy
    Semenov, Sergey
    Bayukov, Oleg A
    Anshits, Alexander G
    Griffith University Author(s)
    Fomenko, Elena
    Year published
    2021
    Metadata
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    Abstract
    Characterization of magnetic particulate matter (PM) in coal fly ashes is critical to assessing the health risks associated with industrial coal combustion and for future applications of fine fractions that will minimize solid waste pollution. In this study, magnetic narrow fractions of fine ferrospheres related to environmentally hazardous PM2.5, PM2.5-10, and PM10 were for the first time separated from fly ash produced during combustion of Ekibastuz coal. It was determined that the average diameter of globules in narrow fractions is 1, 2, 3, and 7 μm. The major components of chemical composition are Fe2O3 (57-60) wt %, ...
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    Characterization of magnetic particulate matter (PM) in coal fly ashes is critical to assessing the health risks associated with industrial coal combustion and for future applications of fine fractions that will minimize solid waste pollution. In this study, magnetic narrow fractions of fine ferrospheres related to environmentally hazardous PM2.5, PM2.5-10, and PM10 were for the first time separated from fly ash produced during combustion of Ekibastuz coal. It was determined that the average diameter of globules in narrow fractions is 1, 2, 3, and 7 μm. The major components of chemical composition are Fe2O3 (57-60) wt %, SiO2 (25-28 wt %), and Al2O3 (10-12 wt %). The phase composition is represented by crystalline phases, including ferrospinel, α-Fe2O3, ε-Fe2O3, mullite, and quartz, as well as the amorphous glass phase. Mössbauer spectroscopy and magnetic measurements confirmed the formation of nanoscale particles of ε-Fe2O3. Stabilization of the ε-Fe2O3 metastable phase, with quite ideal distribution of iron cations, occurs in the glass matrix due to the rapid cooling of fine globules during their formation from mineral components of coal.
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    Journal Title
    ACS Omega
    Volume
    6
    Issue
    30
    DOI
    https://doi.org/10.1021/acsomega.1c03187
    Copyright Statement
    © The Author(s) 2021. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International (CC BY-NC-ND 4.0) License, which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
    Subject
    Toxicology (incl. clinical toxicology)
    Air pollution processes and air quality measurement
    Pollution and contamination
    Science & Technology
    Physical Sciences
    Chemistry, Multidisciplinary
    Chemistry
    FIRED POWER-PLANT
    Publication URI
    http://hdl.handle.net/10072/409148
    Collection
    • Journal articles

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