Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5772
Title: Effect of carbonic anhydrase on CaCO3 crystallization in alkaline solution
Authors: Molva, Murat
Kılıç, Sevgi
Özdemir, Ekrem
Keywords: Carbonic anhydrase
Alkalinity
Calcium carbonate
Crystallization kinetics
Polyurethane foams
Issue Date: Dec-2016
Publisher: American Chemical Society
Source: Molva, M., Kılıç, S., and Özdemir, E. (2016). Effect of carbonic anhydrase on CaCO3 crystallization in alkaline solution. Energy and Fuels, 30(12), 10686-10695. doi:10.1021/acs.energyfuels.6b02475
Abstract: The effect of bovine carbonic anhydrase (CA) on calcium carbonate (CaCO3) crystallization was investigated. A new method was developed to estimate the biocatalytic activity of CA in alkaline solution. The CA was immobilized within polyurethane (PU) foam, and compared its biocatalytic activity with the free-CA and bare-PU foam. A minireactor was created in a calcium hydroxide (Ca(OH)2) solution in order to control the CO2 transfer rate, and reproducible results were obtained. It was found that the free-CA lost its activity in less than 6 min at pH 12.5 in alkaline Ca(OH)2 solution. The CaCO3 crystallization rates for the immobilized-CA were found to be a U-shape, relatively lower at lower immobilized-CA amounts compared to those for the free-CA and bare-PU foam and higher when the amount of immobilized-CA increased. It was concluded that a higher immobilized-CA amount is required to accelerate the CaCO3 crystallization rates in Ca(OH)2 solution.
URI: http://doi.org/10.1021/acs.energyfuels.6b02475
http://hdl.handle.net/11147/5772
ISSN: 0887-0624
0887-0624
1520-5029
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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