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| KOH-알코올 용액의 탄산화를 통한 이산화탄소 포집 및 탄산염 합성 |
| 김응준, 한상준, 위정호 |
| 가톨릭대학교 환경공학과 |
| Carbon Dioxide Capture and Carbonate Synthesis via Carbonation of KOH-Dissolved Alcohol Solution |
| Eung-Jun Kim, Sang-Jun Han, Jung-Ho Wee |
| Department of Environmental Engineering, The Catholic University of Korea |
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Received: January 8, 2015; Revised: August 13, 2015; Accepted: August 28, 2015. Published online: November 30, 2015. |
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| ABSTRACT |
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This work investigates the carbonation of KOH-dissolved methanol and ethanol solution systems carried out for CO2 fixation. Potassium methyl carbonate (PMC) and potassium ethyl carbonate (PEC) were synthesized during the reaction in each solution as the solid powder, and they were characterized in detail. The amount of CO2 chemically absorbed to produce the PMC and PEC precipitates were calculated to be 97.90% and 99.58% of their theoretical values, respectively. In addition, a substantial amount of CO2 was physically absorbed in the solution during the carbonation. PMC precipitates were consisted of the pure PMC and KHCO3 with the weight ratio of 5:5, respectively. PEC precipitates were also mixture of the pure PEC and KHCO3 with the weight ratio of 8:2, respectively. When these two precipitates were dissolved in excess water, methanol and ethanol were regenerated remaining solid KHCO3 in the solutions. Therefore, the process has the potential to be one of the efficient options of CCS and CCU technologies. |
| Key Words:
Carbon Capture and Storage, Carbonation, Potassium Hydroxide, Potassium Methyl Carbonate, Potassium Ethyl Carbonate |
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