CO2 emission cutback by mineral carbonation

Due to growing quantity of CO2 emitted in many countries of activities are carried in order to limit of its emission as well as storing or utilization. Actions connected with CO2 emission limitation are called sequestration. Mineral carbonation is one of methods Of CO2 sequestration and is numbered to chemical methods (fig. 1). Mineral carbonation consists in reaction Of CO2 with metals oxides and creation of insoluble carbonates. In carbonation reaction CO, reacts with metals oxides such as: magnesium, calcium or iron. Carbonates are created and energy is emitted. Mineral carbonation may be conducted by two basic ways [9]: the direct method (single-stage), in which mineral is subjected to carbonation, the indirect method (two-stage method) in which reactive components are initially extracted from mineral matrix (first stage), and then they are subjected to reaction with CO2 (second stage). Taking into consideration application of mineral carbonation as a method of CO2 sequestration two possibilities of its application exist [4, 8]: in-situ: underground in ineral CO2 sequestration joint with geological storing of CO2, ex-situ: the on ground industrial process. Natural minerals such as: serpentinite, olivine or talc, or wastes as fly ashes, may be used to bind CO2.