thermodynamic modeling for the solubility of carbon dioxide and ethyl-mercaptan in aqueous n-methyldiethanolamine and sulfolane by using an electrolyte segmental wilson-nonrandom local composition model

Removal of acid gases and mercaptans from natural gas is necessary for gas treatment industry# moreover, carbon dioxide capturing is an important step for protection of the environment# an accurate thermodynamic model is a primary element needed for the process simulation and optimization for co2 absorption in aqueous amine solutions#in this work, the solubility of co2 and ethyl-mercaptan in aqueous mixture of n-methyldiethanolamine (mdea) as a chemical solvent and sulfolane as a physical solvent are modeled by using an electrolyte segmental wilson-nonrandom in different temperature and various compositions# new adjustable binary interaction parameters are regressed and reported# the results of aad% for the present systems were 15#81%#