Cradle-to-gate life cycle assessment of precipitated calcium carbonate production from steel converter slag

Hannu-Petteri Mattila, Hannes Hudd, Ron Zevenhoven

    Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

    28 Sitaatiot (Scopus)

    Abstrakti

    Precipitated calcium carbonate (PCC), a filler and pigment material, is typically produced by calcining limestone at high temperature processes and by re-carbonating the formed calcium oxide in an aqueous solution. This process causes significant carbon dioxide emissions, while it enables particle size and quality control during processing. An alternative PCC production method named Slag2PCC, where steel converter slag is used as a calcium source instead of limestone, has been recently developed at Finnish universities. When these methods are compared by means of a cradle-to-gate life cycle assessment (LCA), it is confirmed that the Slag2PCC approach has negative CO2 emissions, i.e. the process captures more CO2 than what is generated. Also, regarding other studied LCA impact categories, human health, ecosystem quality and resources, the alternative method is more environmentally benign. However, if excessive after-treatment processes are required for e.g. purifying the produced PCC, the new approach will pollute more than the traditional PCC manufacturing.
    AlkuperäiskieliEi tiedossa
    Sivut611–618
    Sivumäärä8
    JulkaisuJournal of Cleaner Production
    Vuosikerta84
    DOI - pysyväislinkit
    TilaJulkaistu - 2014
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Keywords

    • Calcium carbonate
    • CCS
    • LCA
    • Slag2PCC
    • Steel converter slag

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