Coal combustion alone accounts for about 20% of global carbon emissions, and coal produces the most CO2 per unit SB 265610 of all fossil fuels. However, the world's reliance on coal-based power will continue to grow, irrespective of the improvements achieved in efficiency and the growth of renewable energy sources. Therefore, the development of carbon capture and storage technologies at coal-fired power plants requires urgent attention. Various worldwide projects have tried different industrial approaches adapted to carbon capture. Aqueous Ammonia and Monoethanolamine (MEA) are the popular solvents used to capture and separate CO2 from the flue gas stream. Aqueous Ammonia is a better solvent because its CO2 loading is greater than MEA. However, aqueous ammonia is highly volatile since it can become gaseous and leaves the absorption column with the treated gas. The use of membrane contactor can limit ammonia loss and can widen the operational ranges of temperature, pressure and ammonia concentration (Molina and Bouallou, 2015 and Khalilpour et?al.,). In addition, Gopalakrishna (2015) suggested using hydrotalcite like compounds and metal-based oxides for CO2 capture.