Abstract
Mineral carbonation, which involves spontaneous reactions of CO2 with alkaline earth metals such as calcium or magnesium, is considered one of the most attractive options to sequester CO2 because CO2 can be permanently stored in an inert solid forming stable inorganic carbonate. Moreover, the precipitated CaCO3 has various potential applications in industrial areas, including adhesives, sealants, food, pharmaceuticals, paints, coating, paper, cement, construction materials, etc. In particular, it is expected that the total cost of the carbon capture and storage process could be partly offset by producing value-added CaCO3 materials. In order to add value to the precipitated CaCO3 produced in the ex-situ mineral carbonation process, CaCO3’s polymorphs, as well as other properties such as particle size, shape, density, color, and brightness, must be finely tuned. Among CaCO3’s polymorphs, calcite, aragonite, and vaterite, calcite is considered to be the most thermodynamically favorable structure at ambient ...
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