A comparison of the CPA equation of state and the Trebble-Bishnoi equation of state for use in correlating methane hydrate formation conditions in the presence of aqueous amino acids

Clarke, Matthew A.; Chen, Zhangxin; Ahmadi, Mohammad Ali

doi:10.1016/j.fluid.2023.113878

Cited by 1 publication

(1 citation statement)

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“…Examples of these agents, known as bioclathrates, are sand, cellulose, coal, and wastes of vegetables [14][15][16][17][18][19][20][21][22][23][24][25]. Alternately, for the promotion of gas hydrates, biological or renewable additives (classified as biosurfactants) have also been tested, like those based on vegetable oils [26] or vegetable materials branched with sodium dodecyl sulfate [27], amino acids [28][29][30], organic amines [31,32], urea [31,33], and oligosaccharides such as dextrin [34,35]. The efficiency of the kinetic activity has been commonly contrasted against sodium dodecyl sulfate on the gas consumption, growth rate, or induction time [36,37].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Temperature on the Methane Hydrates Formation Process Using Sodium Surfactin and Rhamnolipids

Pavón-García,

Zúñiga-Moreno,

García-Morales

et al. 2023

Energies

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The performance of chemical and biological additives in the methane hydrates formation and dissociation processes is of relevance for the development of gas-transport and gas-storage systems. The effect of sodium surfactin, rhamnolipids, and sodium dodecyl sulfate (SDS) on the methane hydrate formation process was assessed in this work at different temperatures and a fixed pressure of 50 bar. The studied parameters were induction time, methane uptake, period to reach 90 percent of the consumed gas, water-to-hydrate conversion, and formation rate. Concentrations for sodium surfactin were 3, 150, 750, 1500, 2000, and 2500 ppm, while rhamnolipids and SDS solutions were analyzed at 1500, 2000, and 2500 ppm. Performance testing of these additives was carried out by means of the isochoric–isothermal method. The experimental setup consisted of an isochoric three-cell array with 300 mL of capacity and magnetic stirring. According to the results, the sodium surfactin promoted the methane hydrate formation since the kinetics were higher and the water-to-hydrate conversion averaged 24.3%; meanwhile, the gas uptake increased as concentration was rising, and the induction time was reduced even at a temperature of 276.15 K.

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