| 초록 |
Due to the massive amount of carbon dioxide emission, global warming as well as climate change have come to arise. In order to prevent such effects, various types of carbon reduction technologies have been developed. In CCU (Carbon Capture and Utilization) technologies, carbon dioxide is converted to useful materials and can be used for various industrial fields. In this research, carbon dioxide was converted to metal carbonate salt, especially for calcium carbonate with high purity. Using aqueous alkanolamine-type absorbent solutions, carbon dioixde was captured and converted to ionic states such as carbonate, bicarbonate or carbamate. After that, seawater-based industrial wastewater was added to the CO2-saturated absorbent solution mixture to trigger precipitation reaction. In this research, sodium sulfate was used prior to precipitation reaction resulting in the separation of calcium ion in the form of calcium sulfate dihydrate. This was to achieve high purity calcium carbonate production. Detailed experimental data and conditions are to be introduced in the presentation. |
