Abstract
A generalized expression for estimating the solubility or air gases (oxygen, nitrogen and argon) in saline solutions at atmospheric pressure is presented. The generalization is done for the Henry's constant (to consider the effect of temperature) and for the Setschenow parameter (to consider the effect of salt content in the solution), in terms of the acentric factor, the temperature, and the salinity expressed as the total content of salt. Accurate correlation and prediction of gas solubility is important in various scientific and technological fields and for the design of separation equipment in the chemical and mining-related industries. As a measure of the accuracy of the generalized model, the average deviation, the absolute average deviation and the maximum absolute deviation between correlated and experimental data are evaluated. The proposed model give absolute deviations lower than 1% with some few exceptions, and maximum deviations are always below 4%.
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