| 학회 |
한국화학공학회 |
| 학술대회 |
2012년 가을 (10/24 ~ 10/26, 부산 BEXCO) |
| 권호 |
18권 2호, p.2609 |
| 발표분야 |
환경 |
| 제목 |
Enhancement of CO2 absorption rate in post combustion process using carbonic anhydrase |
| 초록 |
In this study, the enhancement of carbon dioxide (CO2) absorption rate of monoethanol amine (MEA), diethanol amine (DEA), methyldiethanol amine (MDEA), and 2-amino-2-methyl 1-propanol (AMP) solution has been investigated upon addition of bovine carbonic anhydrase (CA), using VLE (vapor-liquid equilibrium) device. The enthalpy (-ΔHabs) of CO2 absorption and absorption capacities of the aqueous amines were measured in the presence and/or absence of CA enzyme by differential reaction calorimeter (DRC). The reaction temperature increase (ΔT) in adiabatic mode was also studied by DRC analysis. The bicarbonate and carbamate species formation mechanism were illustrated by 1H and 13C NMR spectra. The CO2 absorption rate (flux), rate constant (Kapp) for the above amines was found to be in the order MEA＞DEA＞AMP＞MDEA and MDEA＞AMP＞DEA＞MEA with respect absence and, presence of CA. This study demonstrates that CA promotes CO2 absorption rate of MDEA was three fold higher than MEA. The thermal effects suggest that higher activity CA at 40ºC. |
| 저자 |
Mari Vinoba1, 추대현2, 김성아1, 정순관1
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| 소속 |
1한국에너지기술(연), 2고려대 |
| 키워드 |
carbonic anhydrase; amine solvents; CO2 capture
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| E-Mail |
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| 원문파일 |
초록 보기 |
