Effect of an Anionic Surfactant on the Methane Hydrate Formation: Induction Time and Stability
Abstract: In this article, the effect of sodium dodecyl sulfate (SDS) as an anionic surfactant on the thermodynamics, formation rate, formation kinetic, critical micellar concentration (CMC) and stability of methane hydrate was studied. A CMC of SDS and water solution for methane hydrate formation c...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.388.4473 http://www.idosi.org/wasj/wasj9(10)/7.pdf |
| Summary: | Abstract: In this article, the effect of sodium dodecyl sulfate (SDS) as an anionic surfactant on the thermodynamics, formation rate, formation kinetic, critical micellar concentration (CMC) and stability of methane hydrate was studied. A CMC of SDS and water solution for methane hydrate formation conditions in a batch process was measured at 450 ppm, where CMC was determined by hydrate induction time. Induction time was obtained around 40 minutes at an optimum of CMC. Hydrate stability (dissociation rate) tests were performed at five temperatures of 268.2, 269.2, 270.2, 271.2 and 272.2 K with and without surfactant promoters. The experimental results showed that the gas hydrate formed at a high rate in presence of surfactant. Furthermore, the dissociation rate of hydrate below the ice point increased at the same as conditions. Key words: Methane hydrate Formation Kinetic SDS |
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