EXPERIMENTAL STUDY OF CO2 MINERALIZATION IN BURNT OIL SHALE AND CEMENT BYPASS DUST BASED SYSTEMS

The necessity to develop and invest in carbon capture technologies that can minimize the amount of CO2 released in the environment has sparked research in innovative techniques of carbon capture. In recent years, the mineralization of gaseous CO2 into thermodynamically stable carbonates has emerged as a promising CCS method specifically when alkaline industrial waste ashes are utilized as sorbents. The utilization of waste ashes for sequestration plays a dual role in environmental conservation, by creating avenues for recycling in the industry and by promoting the transitions towards a greener circular economy. The re-carbonated materials could be used in different industrial applications such as concrete production, therefore, the CO2 trapped in the waste from plants can be utilized in the production of valuable goods. The alkaline wastes of BOS and BPD generally contain free lime which makes them suitable sorbent materials for CO2 trapping via mineral carbonation technique of CCS. In relation to the wider research on CCS in the EU - HORIZON 2020 project clean clinker production by Calcium looping process (CLEANKER), this master thesis work investigates alkaline wastes BOS and BPD as sorbents in CO2 mineralization process in order to study the reaction kinetics and operating parameters for industrial sized scale ups, as well as to identify the effects on carbonation capacity when these sorbents undergo pre-treatment and are exposed to different temperatures