| 학회 |
한국화학공학회 |
| 학술대회 |
2009년 가을 (10/22 ~ 10/23, 일산 KINTEX) |
| 권호 |
15권 2호, p.1649 |
| 발표분야 |
환경 |
| 제목 |
Ammonium salt/ion speciation in a ammonia-based carbon dioxide capture process |
| 초록 |
Ammonia has received special attention as an effective absorbent in CO2 capture process because of its higher CO2 absorption capacity and lower chemical cost. In an ammonia-based CO2 capture process, which usually consists of absorption and regeneration steps, the speciation of salt/ions in the aqueous phase greatly affects the overall process efficiency, especially the energy requirement for NH3 regeneration. In this study, we examined the salt/ions contained in ammonia solution using a 13C NMR spectrometry and identified that bicarbonate (HCO3-), carbonate (CO32-) and carbamate (NH2COO-) were present in the aqueous phase. During the absorption reaction, NH2COO- was prevailing at the initial stage however at the end of reaction the HCO3- was dominant. In the regeneration step, the NH2COO- is present always higher than CO32- and HCO3- was significantly decreased. Consequently, the 13C NMR analysis can be help to understand the reaction of ammonia and CO2 and optimize the CO2 capture process. |
| 저자 |
안치규1, 이민우1, 이해우1, 장용수1, 한건우2, 김제영2, 박종문1
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| 소속 |
1포항공과대, 2포항산업과학(연) |
| 키워드 |
Carbon dioxide capture; Ammonia solution; 13C NMR
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| E-Mail |
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| 원문파일 |
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