The world’s energy demands are increasing, more efficient and environmental friendly methods of energy generation are needed as higher levels of energy generation are coupled with increased levels of pollution. Research has been ongoing to develop newer methods of controlling pollutants such as carbon dioxide (CO2) and carbon monoxide (CO) from being released into the environment. The focus of this project is on carbon dioxide removal from flue gas, with is a by-product of the coal gasification process using carbon dioxide absorbing materials (CAM). The CAM of particular interest in this paper is Calcium Oxide (CaO) otherwise known as lime, which has been singled out for its high performance properties such as high absorption and regeneration rate. This chemical equation of this process is
CaO + CO2 ⇔CaCO3 + heat
Past studies have shown that the CaO particle’s reaction with CO2 decreases once the product layer of calcium carbonate CaCO3 becomes thick and impervious. This results in the premature termination of carbonation and under utilization of the particle. CaO can be regenerated from CaCO3 by applying high heat for reuse. Previous research has shown that CaCO3 particles can be manufactured with specific morphology and size; hence this study aims to investigate the result of altering certain parameters (e.g. Temperature, additives used, CO2 flow rate) during manufacturing (precipitation method) of CaCO3. This research will benefit future researchers that will try to determine the optimum particle size to achieve the highest rate of reaction with CO2.