Advances in environmental research

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

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))
  • Received : 2015.02.02
  • Accepted : 2015.02.25
  • Published : 2015.03.25
⟨ Previous Next ⟩

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

Acknowledgement

Grant : 창조적 사회기반시스템기술 사업단

References

  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. https://doi.org/10.1016/j.marchem.2009.09.002
  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. https://doi.org/10.1073/pnas.0605318103
  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. https://doi.org/10.1016/j.ijggc.2013.11.013
  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. https://doi.org/10.1021/es504450x
  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. https://doi.org/10.1021/es702179p
  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. https://doi.org/10.1021/es901066h
  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. https://doi.org/10.1021/es201261y
  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. https://doi.org/10.1016/j.gca.2013.10.030
  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. https://doi.org/10.1016/j.ijggc.2013.01.001
  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. https://doi.org/10.1021/es405099z
  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. https://doi.org/10.1016/j.gca.2003.07.001
  12. Sloan, E.D. (2003), "Fundamental principles and applications of natural gas hydrates", Nature, 426, 353-363. https://doi.org/10.1038/nature02135
  13. 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. https://doi.org/10.1021/je60044a001
  14. 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. https://doi.org/10.1016/S0360-5442(97)00047-9
  15. 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. https://doi.org/10.1002/(SICI)1099-114X(19990325)23:4<295::AID-ER478>3.0.CO;2-D
  16. 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.

Cited by

  1. CO2 Hydrate dissolution rates in unsaturated water quantified with laboratory experiments vol.430, pp.p4, 2015, https://doi.org/10.1016/j.cej.2021.133137