Solubility measurement of carbon dioxide in water in the presence of gas hydrate

In order to use the fugacity or solubility as the driving force during hydrate formation, we need to measure the mole fraction of hydrate former gases in the liquid phase. In this study, the mole of CO2 in water was measured and reported. The isobaric experiments were conducted at temperatures between 275 and 281 K and different degrees of super saturation, which is the ratio of the experimental pressure to the hydrate equilibrium pressure at the same temperature. Also the influence of temperature and pressure on the solubility of gas in liquid in the presence of hydrate has been investigated. Results show that solubility of CO2 in water (during hydrate formation) is relatively close to the solubility of CO2 at the same temperature but corresponding equilibrium pressure. In addition, the solubility and (consequently) the fugacity of the aqueous phase are constant during hydrate growth stage.