Feasibility of a Mineral Carbonation Technique Using Iron-Silicate Mining Waste by Direct Flue Gas CO2 Capture and Cation Complexation Using 2,2?-Bipyridine
نویسندگان
چکیده
Mineral carbonation is gaining increasing attention for its ability to sequester CO2. The main challenge doing it economically and energy-efficiently. Recently, many studies have focused on the aqueous reaction of carbon dioxide with alkaline earth minerals such as serpentine, Mg-rich olivine wollastonite. Nevertheless, Fe-rich olivines been poorly studied because their high energy demand, which make them unfeasible industrial implementation. This article describes feasibility an indirect mineral process using silicic, mining waste direct flue gas CO2 via iron complexation 2,2?-bipyridine. overall was performed in three steps: leaching, complexation, reactions. preferential parameters resulted a recirculation scenario, where 38% Fe cations were leached, complexed, reacted under mild conditions. uptake 57.3% achieved, obtaining carbonate. These results are promising application reduce emissions. Furthermore, greenhouse balance had global vision reaction’s feasibility. showed positive removal, estimated 130 kg CO2/ton residue. Although exhaustive study should be done, new innovative sequestration approach this promising.
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ژورنال
عنوان ژورنال: Minerals
سال: 2021
ISSN: ['2075-163X']
DOI: https://doi.org/10.3390/min11040343