Roles of Sodium Dodecyl Sulfate on Tetrahydrofuran-Assisted Methane Hydrate Formation

Journal of Oleo Science
Atsadawuth SiangsaiPramoch Rangsunvigit

Abstract

Sodium dodecyl sulfate (SDS) markedly improved tetrahydrofuran (THF) - assisted methane hydrate formation. Firstly, methane hydrate formation with different THF amount, 1, 3, and 5.56 mol%, was studied. SDS with 1, 4, and 8 mM was then investigated for its roles on the methane hydrate formation with and without THF. The experiments were conducted in a quiescent condition in a fixed volume crystallizer at 8 MPa and 4°C. The results showed that almost all studied THF and SDS concentrations enhanced the methane hydrate formation kinetics and methane consumption compared to that without the promoters, except 1 mol% THF. Although, with 1 mol% THF, there were no hydrates formed for 48 hours, the addition of just 1 mM SDS surprisingly promoted the hydrate formation with a significant increased in the kinetics. This prompts the use of methane hydrate technology for natural gas storage application with minimal promoters.

References

Nov 30, 2006·Journal of the American Chemical Society·Do-Youn KimHuen Lee
Mar 21, 2008·Environmental Science & Technology·Praveen LingaPeter Englezos
Jan 1, 2011·Annual Review of Chemical and Biomolecular Engineering·Carolyn A KohDavid T Wu

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