for achieving high capture capacities. Thus, reducing the regeneration energy can lower the driving force and thereby increase the amount of solvent and size of absorber needed to capture a given amount of CO2, thus, increasing the capital cost. See also Ammonia production Hydrodesulfurization WSA Process Claus process Selexol Rectisol Amine Ionic liquids in carbon capture Solid sorbents for carbon capture References External links Description of Gas Sweetening Equipment and Operating Conditions Selecting Amines for Sweetening Units, Polasek, J. (Bryan Research & Engineering) and Bullin, J.A. (Texas A&M University), Gas Processors Association Regional Meeting, Sept. 1994. Natural Gas Supply Association Scroll down to Sulfur and Carbon Dioxide Removal Description of the classic book on gas treating by Acid gas control Biogas technology Carbon capture and storage Chemical processes Gas technologies Natural gas technology Oil refining