In this study, we propose a process making calcium carbonate and calcium sulfate and recovering absorbent by using ammonia absorbent, carbon dioxide, and industrial waste. The main objective of this study is to confirm possibility of carbon capture an...
In this study, we propose a process making calcium carbonate and calcium sulfate and recovering absorbent by using ammonia absorbent, carbon dioxide, and industrial waste. The main objective of this study is to confirm possibility of carbon capture and utilization based on waste materials. We assumed desulfurization gypsum and construction waste (remicon washing water, waste concrete, etc.) are CaSO<sub>4</sub>, Ca(OH)<sub>2</sub>, respectively. And concentration of simulated carbon dioxide gas was 15 vol% similar to flue gas. Calcium carbonate was produced by combination reaction between ionic CO<sub>2</sub> in absorbent and metal ion in the solid waste. Experiments were conducted at normal temperature and pressure. Furthermore, the generated products were characterized by XRD, SEM.