Energy efficiency analysis of CO 2 mineral sequestration in magnesium silicate rock using electrochemical steps

Thomas Björklöf, Ron Zevenhoven*

*Korresponderande författare för detta arbete

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    10 Citeringar (Scopus)


    A thermodynamic efficiency analysis using the exergy concept is used to assess CO 2 mineral sequestration process routes where electrochemical steps (electrolysis and fuel cells) are used to produce aqueous hydrochloric acid and sodium hydroxide reactant solutions. Results from three recent publications on the subject that come to different conclusions are used for this case study. It is shown that including electrolysis as one of the steps of a magnesium silicate mineral carbonation process route results in input energy requirements that will exceed the output of a fossil fuel-fired power plant that produces the CO 2 that is bound to (hydro-) carbonates. At the same time, fuel cells are not efficient enough to change this.

    Sidor (från-till)1467-1472
    Antal sidor6
    TidskriftChemical Engineering Research and Design
    StatusPublicerad - okt 2012
    MoE-publikationstypA1 Tidskriftsartikel-refererad


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