In the awake of global response for the protection of environment and sustainable development, the removal, disposal and useful utilization of carbon dioxide (CO 2) evolved from different sources is becoming a challenge with time. CO 2, is one of the major green house gas and responsible for the climate changes on earth. The major sources of CO 2 emission include the burning of fossil fuel, coal fired power plants, oil refining, hydrogen production, several industrial processes and sweetening of natural gas. Removal of acid gases from gaseous streams (sweetening of natural gas) such as CO 2 is carried out by aqueous solutions of alkanolamines. The traditional amines used for acid gas removal include; mono-ethanolamine (MEA), diethanolamine (DEA) and N-methyldiethanolamine (MDEA). These amines have their operational and absorption limitations (high heat of regeneration, low absorption, corrosion and foaming).