CO2 fixation using magnesium silicate minerals Part 1: Process description and performance

Johan Fagerlund*, Experience Nduagu, Inês Romaoãc, Ron Zevenhoven

*Corresponding author for this work

    Research output: Chapter in Book/Conference proceedingConference contributionScientificpeer-review

    9 Citations (Scopus)

    Abstract

    This paper describes a staged carbonation process for magnesium silicate mineral carbonation. This carbon dioxide capture and storage (CCS) alternative involves the production of magnesium hydroxide, followed by its carbonation in a pressurised fluidised bed (PFB) reactor that is operated at temperatures and pressures so far up to 873 K, 4.5 MPa. The goal is to utilise the heat of the carbonation reaction to drive the Mg(OH)2 production step. The results show that Mg(OH)2 can be produced successfully and efficiently from different serpentinite minerals from locations worldwide (Finland, Lithuania, Australia and Portugal). From the extraction step, ammonium sulphate is recovered while iron oxides (from the mineral) are obtained as by-products. The carbonation step, while still being developed, resulted in >50 %-wt conversion in 15 minutes (773 K, 2 MPa) for > 300 urn serpentinite derived Mg(OH)2 particles.

    Original languageEnglish
    Title of host publicationPower Plants and Industrial Processes
    PublisherÅbo Akademi University
    Pages67-75
    Number of pages9
    ISBN (Print)9781456303181
    Publication statusPublished - 2010
    MoE publication typeA4 Article in a conference publication
    Event23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2010 - Lausanne, Switzerland
    Duration: 14 Jun 201017 Jun 2010

    Publication series

    NameProceedings of the 23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2010
    Volume4

    Conference

    Conference23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2010
    CountrySwitzerland
    CityLausanne
    Period14/06/1017/06/10

    Keywords

    • carbon dioxide capture and storage
    • Gas-solid carbonation
    • Staged process

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