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http://dx.doi.org/10.9713/kcer.2011.49.1.109

Effect of Aspartic Acid and Lysine on Polymorphism of Calcium Carbonate Crystal Formed by Gas-Liquid Reaction  

Song, Seong-Moon (Department of Chemical Engineering, Chungnam National University)
Seong, Back-In (Department of Chemical Engineering, Chungnam National University)
Koo, Ji-Hoi (Department of Chemical Engineering, Chungnam National University)
Kim, In-Ho (Department of Chemical Engineering, Chungnam National University)
Publication Information
Korean Chemical Engineering Research / v.49, no.1, 2011 , pp. 109-113 More about this Journal
Abstract
Crystallization of calcium carbonate were performed by adding aspartic acid and lysine into $CaCl_2$ solution for understanding biomineralization in gas-liquid reaction of $NH_4HCO_3$ and $CaCl_2$. Proportion between calcite and vaterite of calcium carbonate crystals was identified by changing conditions such as reaction time, addition amount of aspartic acid, lysine, $CaCl_2$, and $NH_4HCO_3$. FT-IR(Fourier Transform Infrared spectroscopy) instrument was used to perform analysis of vaterite ratio. Under the condition of $NH_4HCO_3$ 10 g and no additive, an increase of vaterite crystal changed to a decrease around 0.15 M $CaCl_2$. Then it largely increased at 0.25 M $CaCl_2$, after vaterite proportion was rising again at 0.20 M $CaCl_2$. In contrast to that, vaterite crystal continuously decreased to 0.2 M $CaCl_2$, and increased from 0.25 M $CaCl_2$ with 20 g $NH_4HCO_3$. Vaterite crystals were observed to be a maximum after 2days with lysine addition, but $CaCO_3$ vaterite crystals showed minimum with aspartic acid.
Keywords
Calcium Carbonate; Crystallization; Biomineralization; Lysine; Aspartic Acid; FT-IR;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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