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http://dx.doi.org/10.12989/aer.2015.4.1.017

Numerical study of CO2 hydrate dissolution rates in the ocean: Effect of pressure, temperature, and salinity  

Kyung, Daeseung (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST))
Ji, Sukwon (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST))
Lee, Woojin (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST))
Publication Information
Advances in environmental research / v.4, no.1, 2015 , pp. 17-24 More about this Journal
Abstract
In this study, we numerically investigated the effect of pressure (100-250 bar), temperature (274-288 K), and salinity (3.5% w/w electrolytes) on $CO_2$ hydrate dissolution rates in the ocean. Mass transfer equations and $CO_2$ solubility data were used to estimate the $CO_2$ hydrate dissolution rates. The higher pressure and lower temperature significantly reduced the $CO_2$ hydrate dissolution rates due to the increase of $CO_2$ particle density. In the high salinity condition, the rates of $CO_2$ hydrate dissolution were decreased compared to pure water control. This is due to decrease of $CO_2$ solubility in surrounding water, thus reducing the mass transfer of $CO_2$ from the hydrate particle to $CO_2$ under-saturated water. The results obtained from this study could provide fundamental knowledge to slow down or prevent the $CO_2$ hydrate dissolution for long-term stable $CO_2$ storage in the ocean as a form of $CO_2$ hydrate.
Keywords
$CO_2$ hydrate dissolution; mass transfer; ocean conditions; $CO_2$ storage;
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1 Bigalke, N.K., Rehder, G. and Gust, G. (2009), "Methane hydrate dissolution rates in undersaturated seawater under controlled hydrodynamic forcing", Mar. Chem., 115(3-4), 226-234.   DOI
2 House, K.Z., Schrag, D.P., Harvey, C.F. and Lackner, K.S. (2006), "Permanent carbon dioxide storage in deep-sea sediments", Proceedings of the National Academic Science of the USA, 103(33), 12291-12295.   DOI
3 Kyung, D., Lee, K., Kim, H. and Lee, W. (2014), "Effect of marine environmental factors on the phase equilibrium of $CO_2$ hydrate", Int. J. Greenh. Gas Con., 20, 285-292.   DOI   ScienceOn
4 Kyung, D., Lim, H.-K., Kim, H. and Lee, W. (2015), "$CO_2$ hydrate nucleation kinetics enhanced by an organo-mineral complex formed at the montmorillonite-water interface", Environ. Sci. Technol., 49(2), 1197-1205.   DOI
5 Lamorena, R.B. and Lee, W. (2008), "Formation of carbon dioxide hydrate in soil and soil mineral suspensions with electrolytes", Environ. Sci. Technol., 42(8), 2753-2759.   DOI   ScienceOn
6 Lamorena, R.B. and Lee, W. (2009), "Effect of pH on carbon dioxide hydrate formation in mixed soil mineral suspension", Environ. Sci. Technol., 43(15), 5908-5914.   DOI   ScienceOn
7 Lamorena, R.B., Kyung, D. and Lee, W. (2011), "Effect of organic matters on $CO_2$ hydrate formation in Ulleung Basin sediment suspensions", Environ. Sci. Technol., 45(14), 6196-6203.   DOI   ScienceOn
8 Lapham, L.L., Wilson, R.M., MacDonald, I.R. and Chanton, J.P. (2014) "Gas hydrate dissolution rates quantified with laboratory and seefloor experiments", Geochim. Cosmochim. Acta, 125, 492-503.   DOI
9 Lee, K., Lee, S.H. and Lee, W. (2013), "Stochastic nature of carbon dioxide hydrate induction times in Na-montmorillonite and marine sediment suspensions", Int. J. Greenhouse Gas Control., 14, 15-24.   DOI
10 Park, T., Kyung, D. and Lee, W. (2014), "Effect of organic matter on $CO_2$ hydrate phase equilibrium in phyllosilicate suspensions", Environ. Sci. Technol., 48(12), 6597-6603.   DOI
11 Rehder, G., Kirby, S.H., Durhan, W.B., Stern, L.A., Peltzer, E.T., Pinkston, J. and Brewer, P.G. (2004), "Dissolution rates of pure methane hydrate and carbon-dioxide hydrate in undersaturate seawater at 1000-m depth", Geochim. Cosmochim. Acta, 68(2), 285-292.   DOI
12 Sloan, E.D. (2003), "Fundamental principles and applications of natural gas hydrates", Nature, 426, 353-363.   DOI
13 Warzinski, R.P., Lynn, R.J., Haljasmaa, I., Zhang, Y. and Holder, G.D. (2004), "Dissolution of $CO_2$ drops and $CO_2$ hydrate stability under simulated deep ocean conditions in a high-pressure water tunnel", Proceedings of the 3rd Annual Conference on Carbon Sequestration, Alexandria, VA, USA, May.
14 Stewart, P.B. and Munjal, P. (1970), "Solubility of carbon dioxide in pure water, synthetic sea waater, and synthetic sea water concentrates at $-5^\circ$ to 2$25^\circ{C}$. and 10- to 45-atm. pressure", J. Chem. Eng. Data, 15(1), 67-71.   DOI
15 Teng, H., Yamasaki, A., Chun, M.-K. and Lee, H. (1997), "Why does $CO_2$ hydrate disposed of in the ocean in the hydrate-formation region dissolve in seawater?", Energy, 22(12), 1111-1117.   DOI
16 Teng, H., Yamasaki, A. and Shindo, Y. (1999), "The fate of $CO_2$ hydrate released in the ocean", Int. J. Energ. Res., 23(4), 295-302.   DOI