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Ind. Eng. Chem. Res. 2006, 45, 9184-9194
Energy Consumption and Net CO2 Sequestration of Aqueous Mineral Carbonation Wouter J. J. Huijgen,† Gerrit Jan Ruijg,† Rob N. J. Comans,*,†,‡ and Geert-Jan Witkamp§ Energy Research Centre of The Netherlands, P.O. Box 1, 1755ZG Petten, The Netherlands, Department of Soil Quality, Wageningen UniVersity, P.O. Box 8005, 6700EC Wageningen, The Netherlands, and Laboratory for Process Equipment, Delft UniVersity of Technology, Leeghwaterstraat 44, 2628CA Delft, The Netherlands
Aqueous mineral carbonation is a potentially attractive sequestration technology to reduce CO2 emissions. The energy consumption of this technology, however, reduces the net amount of CO2 sequestered. Therefore, the energetic CO2 sequestration efficiency of aqueous mineral carbonation was studied in dependence of various process variables using either wollastonite (CaSiO3) or steel slag as feedstock. For wollastonite, the maximum energetic CO2 sequestration efficiency within the ranges of process conditions studied was 75% at 200 °C, 20 bar CO2, and a particle size of
