アルカリ水溶液を用いたCO₂回収・固定に関する基礎研究

抄録

In order to capture approximately 10 vol% of carbon dioxide contained in the combustion flue gas, a technology that absorbs carbon dioxide into a solution and then reacts it with calcium to solidify it is gaining attention. The challenge of this technology lies in not only recovering carbonate ions by reacting them with calcium but also regenerating the absorption liquid (alkaline aqueous solution) to establish a system that absorbs and fixes carbon dioxide. In this study, we report the results of investigating the feasibility of a cycle system where carbon dioxide is captured from air containing 5-10 vol% CO2 using an alkaline aqueous solution as the absorbent and recovered by reacting with Ca(OH)₂ to form carbonate.