Iron and steel slag properties and mechanisms for carbon dioxide fixation in a low-carbon society

M. Umino, Hideo Komine, S. Murakami, K. Yasuhara, K. Setoi, Y. Watanabe

    Research output: Contribution to journalArticle

    Abstract

    This report presents carbon dioxide (CO2) fixation properties of an iron and steel slag containing calcium, in order to contribute to a geotechnical application for the formation of a sound material-cycle society and a low-carbon society. To investigate the properties of CO2 fixation, CO2 fixation tests with constant flow were conducted. Results show that when the CO2 concentration 4500 ?L- CO2/L was flowed in a specimen by 0.05 L/min, for a non-aged steelmaking slag, the amount of CO2 fixed was the maximum: 0.04 g- CO2/g-slag. The amount of CO2 fixed in the steelmaking slag resulted from about 20% of soluble calcium in the chemical reaction. Therefore, it is possible that the quantity of CO2 fixation can be evaluated from the viewpoint of the mechanism of CO2 fixation using the quantity of water-soluble calcium.

    Original languageEnglish
    Pages (from-to)82-89
    Number of pages8
    JournalGeotechnical Engineering
    Volume48
    Issue number1
    Publication statusPublished - 2017

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    Keywords

    • Calcite
    • Carbon dioxide
    • Iron and steel slag
    • Low-carbon society
    • Sound material-cycle society

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Geotechnical Engineering and Engineering Geology

    Cite this

    Umino, M., Komine, H., Murakami, S., Yasuhara, K., Setoi, K., & Watanabe, Y. (2017). Iron and steel slag properties and mechanisms for carbon dioxide fixation in a low-carbon society. Geotechnical Engineering, 48(1), 82-89.