title: Study of fuel oxygenates solubility in aqueous media as a function of temperature and tert-butyl alcohol concentration.
abstract: Methyl tert-butyl ether (MTBE) is the most widely used oxygenate in gasoline blending and has become one of the world's most widespread groundwater and surface water pollutants. Alternative oxygenates to MTBE, namely ethyl tert-butyl ether (ETBE), tert-amyl ether (TAME) and diisopropyl ether (DIPE) have been hardly studied yet. The solubility of these chemicals is a key thermodynamic information for the assessment of the fate and transport of these pollutants. This work reports experimental data of water solubility at the range from 278.15 to 313.15K and atmospheric pressure of ethers used in fuels (MTBE, ETBE, TAME and DIPE) due to the strong influence of temperature on its trend. From the experimental data, temperature dependent polynomials were fitted, thermodynamic parameters were calculated and theoretical models were used for prediction. Finally, the tert-butyl alcohol (TBA) influence in the solubility of MTBE and ETBE in aqueous media was studied.
authors.affiliation: Departament d'Enginyeria Química, Escola Tècnica Superior d'Enginyeria Química, Universitat Rovira i Virgili, Avinguda Països Catalans 26, Campus Sescelades, 43007 Tarragona, Spain. rafael.gonzalez@urv.net
authors.forename: R
authors.initials: R
authors.lastname: Gonzalez-Olmos
authors.forename: M
authors.initials: M
authors.lastname: Iglesias
mesh_terms: D004987:Ethers / Q000737:chemistry; D005019:Ethyl Ethers / Q000737:chemistry; D005742:Gasoline; D008738:Methyl Ethers / Q000737:chemistry; D012995:Solubility; D013696:Temperature; D014106:Tosylarginine Methyl Ester / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D020002:tert-Butyl Alcohol / Q000737:chemistry*
chemical_list: D004987:Ethers; D005019:Ethyl Ethers; D005742:Gasoline; D008738:Methyl Ethers; D014874:Water Pollutants, Chemical; C043243:methyl tert-butyl ether; C098546:ethyl tert-butyl ether; D014106:Tosylarginine Methyl Ester; C011779:diisopropyl ether; D020002:tert-Butyl Alcohol