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Received December 14, 2010
Accepted March 16, 2011
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Biomimetic sequestration of carbon dioxide using an enzyme extracted from oyster shell
1Department of Chemical and Biological Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-701, Korea 2Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Korea
jeongsk@kier.re.kr
Korean Journal of Chemical Engineering, October 2011, 28(10), 2081-2085(5), 10.1007/s11814-011-0071-z
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Abstract
Carbon dioxide sequestration activity was compared and evaluated using bovine carbonic anhydrase (BCA), and a water soluble protein extract derived from hemocytes from diseased shell (HDS). Para-nitrophenyl acetate (p-NPA) was used to measure the reaction rate. The kcat/Km values obtained from the Lineweaver-Burk and Michaelis-Menten equations were 230.7M.1s.1 for BCA and 194.1M.1s.1 for HDS. Without a biocatalyst, CaCO3 production took 15 seconds on average, while it took 5 seconds on average when BCA or HDS were present, indicating an approximately 3-fold enhancement of CaCO3 production rate by the biocatalysts. The biocatalytic hydration of CO2 and its precipitation as CaCO3 in the presence of biocatalysts were investigated.
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