Articles & Issues

Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received July 7, 2010
Accepted July 23, 2010

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 unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

All issues

기액반응에서 형성된 탄산칼슘 결정의 다형성에 미치는 Aspartic acid와 Lysine의 영향

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

송성문 성백인 구지회 김인호^†

Seong-Moon Song Back-In Seong Ji-Hoi Koo In-Ho Kim^†

충남대학교 화학공학과, 305-764 대전시 유성구 궁동 220

Department of Chemical Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, Korea

ihkim@cnu.ac.kr

Korean Chemical Engineering Research, February 2011, 49(1), 109-113(5), NONE Epub 9 February 2011

Download PDF

Abstract

탄산칼슘의 Biomineralization 반응을 수행하기 위해 aspartic acid와 lysine을 CaCl2 용액에 첨가하여 기-액 반응으로 염화칼슘과 NH4HCO3을 사용하여 탄산칼슘 결정화 실험을 하였다. 결정화 반응시간, aspartic acid와 lysine의 첨가양, CaCl2의 양, NH4HCO3의 양을 변경하여 탄산칼슘 결정의 다형체인 calcite와 vaterite의 비를 조사하였다. 결정 분석을 수행하기 위해 FT-IR spectrometer(model IR Prestige-21, Shimadzu, Kyoto, Japan) 장치를 사용하였고 FT-IR 스펙트럼으로 calcite와 vaterite 결정을 확인하였다. CaCl2의 양을 변경하였을 때, NH4HCO3 10 g에서 0.15 M의 CaCl2 농도 전후에서 vaterite 결정의 증가가 감소로 변하다가 0.20M에서는 다시 증가하여 0.25 M에서 가장 많은 vaterite 결정이 관찰되었다. NH4HCO3 20 g에서는 0.10 M의 CaCl2를 전환점으로 하여 vaterite 결정이 증가에서 감소추세를 보이다가 0.25M에서 다시 증가하는 것으로 나타났다. 첨가제로 lysine을 이용하였을 때는 반응시간이 2일을 기점으로 vaterite양의 증가가 감소로 변하였고 aspartic acid를 첨가하였을 때는 반대의 경향을 보였다.

Crystallization of calcium carbonate were performed by adding aspartic acid and lysine into CaCl2 solution for understanding biomineralization in gas-liquid reaction of NH4HCO3 and CaCl2. Proportion between calcite and vaterite of calcium carbonate crystals was identified by changing conditions such as reaction time, addition amount of aspartic acid, lysine, CaCl2, and NH4HCO3. FT-IR(Fourier Transform Infrared spectroscopy) instrument was used to perform analysis of vaterite ratio. Under the condition of NH4HCO3 10 g and no additive, an increase of vaterite crystal_x000D_ changed to a decrease around 0.15 M CaCl2. Then it largely increased at 0.25 M CaCl2, after vaterite proportion was rising again at 0.20 M CaCl2. In contrast to that, vaterite crystal continuously decreased to 0.2 M CaCl2, and increased from 0.25 M CaCl2 with 20 g NH4HCO3. Vaterite crystals were observed to be a maximum after 2days with lysine addition, but CaCO3 vaterite crystals showed minimum with aspartic acid.

Keywords

Calcium Carbonate Crystallization Biomineralization Lysine Aspartic Acid FT-IR

References

Park JW, Kim JS, Ahn JW, Han C, J. Korean Ind. Eng. Chem., 17(1), 67 (2006)
Lyu SG, Sur GS, Kang SH, J. KIChE, 25, 186 (1997)
Hua T, Wentao M, Leilei W, Peng W, Jiming H, Lianxin C, Biomat., 25, 3923 (2004)
Gu CH, Victor YJ, David J, Grant W, J. Pharm. Sci., 90, 1878 (2001)
Junwu X, Yingchun Z, Yanyan L, Huijuan L, Yi Z, Fangfang X, Lanzhou W, Cryst. Growth. Des., 8, 2887 (2008)
Jun K, Norimasa S, Masao K, Keiji S, Nobuyuki A, J. Cryst. Growth, 237-239, 419 (2002)
Manoli F, Dalas E, J. Cryst. Growth, 222(1-2), 293 (2001)
Xie AJ, Shen YH, Zhang CY, Yuan ZW, Zhu XM, Yang YM, J. Cryst. Growth, 285(3), 436 (2005)
Shivkumara C, Preetam S, Asha G, Hegde MS, Mater. Res. Bull., 41, 1455 (2006)
Kanakis J, Dalas E, J. Cryst. Growth, 219(3), 277 (2000)
Vagenas NV, Gatsouli A, Kontoyannis CG, Talanta, 59, 831 (2003)