Experimental Investigations of Oxygenated Gasoline Dissolution
Publication: Journal of Environmental Engineering
Volume 127, Issue 3
Abstract
Oxygenated compounds such as ethanol and MTBE are added to gasoline in many countries to increase the octane rating and to reduce the carbon monoxide and ozone levels in the air. In Brazil, due to economic reasons, gasoline has had up to 26% ethanol added. The leakage or spillage of such gasolines, referred to as oxygenated gasolines, could induce a cosolvent flushing effect in the contaminated soil as a result of the high solubility of oxygenated compounds in water. This paper focuses on the experimental measurements of the enhanced concentration and the dissolution of 12 organic compounds with increasing percentages of ethanol in the gasoline phase. The validity of Raoult's law and the log-linear cosolvency model to estimate the aqueous concentration of the hydrocarbons from unamended and from oxygenated gasolines is verified. Column tests showed that ethanol is leached out of residual gasoline after a short time, leaving an ethanol-free residual phase.
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References
1.
Abrams, D. S., and Prausnitz, J. M. ( 1975). “Statistical thermodynamics of liquid mixtures. A new expression for the excess Gibbs energy of partly or completely miscible systems.” AIChE J., 21(1), 116–128.
2.
Atlas, R. M., and Cerniglia, C. E. ( 1995). “Bioremediation of petroleum pollutants: Diversity and environmental aspects of hydrocarbon biodegradation.” BioScience, 45(5), 332–338.
3.
Banerjee, S. ( 1984). “Solubility of organic mixtures in water.” Envir. Sci. and Technol., 18(8), 587–591.
4.
Banerjee, S., Yalkowsky, S. H. ( 1988). “Cosolvent-induced solubilization of hydrophobic compounds into water.” Analytical Chem., 60(19), 2153–2155.
5.
Barton, A. F. M. ( 1975). Chem. Rev., 75, 731–753.
6.
Brookman, G. T., Flanagan, M., and Kebe, J. O. ( 1985). “Laboratory study on solubilities of petroleum hydrocarbons in groundwater.” Publ. No. 4395, American Petroleum Institute, Washington, D.C.
7.
Chen, F., Holten-Anderson, J., and Tyle, H. ( 1993). “New developments of the UNIFAC model for environmental applications.” Chemosphere, 26(7), 1325–1354.
8.
Cline, P. V., Delfino, J. J., and Rao, P. S. C. ( 1991). “Partitioning of aromatic constituents into water from gasoline and other complex solvent mixtures.” Envir. Sci. and Technol., 25(5), 914–920.
9.
Ferreira, S. B. ( 2000). “Estudos laboratoriais para do potencial de de água e de solo por gasolina oxigenada.” Doctoral thesis, Paulo University, Paulo.
10.
Fredenslund, A., Jones, R. L., and Prausnitz, J. M. ( 1975). “Group-contribution estimation of activity coefficients in nonideal liquid mixtures.” AIChE J., 21(6), 1086–1099.
11.
Fu, J. K., and Luthy, R. G. (1986). “Effect of organic solvent on sorption of aromatic solutes in soils.”J. Envir. Engrg., ASCE, 112(2), 346–366.
12.
Grathwohl, P. ( 1998). “Diffusion in natural porous media: Contaminant transport, sorption/desorption, and dissolution kinetics.” University of Tübingen, Germany, Kluwer Academic, Boston.
13.
Groves, F. R. ( 1988). “Effect of cosolvents on the solubility of hydrocarbons in water.” Envir. Sci. and Technol., 22(3), 282–286.
14.
Heermann, S. E., and Powers, S. E. ( 1998). “Modeling the partitioning of BTEX in water-reformulated gasoline systems containing ethanol.” J. Contaminant Hydro., 34, 315–341.
15.
Judy, C. L., Pontikos, N., and Acree, W. E. ( 1987). “Solubility in binary solvent systems: Comparison of predictive equations derived from NIBS model.” J. Chem. Engrg. Data, 32, 60–62.
16.
Kan, A. T., and Tomson, M. B. ( 1996). “UNIFAC prediction of aqueous and nonaqueous solubilities of chemicals with environmental interest.” Envir. Sci. and Technol., 30(4), 1369–1377.
17.
Lane, L. C. ( 1977). Kirk-Othmer encyclopedia of chemical technology, H. F. Mark, J. J. McKetta, D. F. Othmer, and A. Standen, eds., Interscience, New York.
18.
Lane, W. F., and Loehr, R. C. ( 1992). “Estimating the equilibrium aqueous concentrations of polinuclear aromatic hydrocarbons in complex mixtures.” Envir. Sci. and Technol., 26, 983–990.
19.
Lesage, S., and Brown, S. ( 1994). “Observation of the dissolution of NAPL mixtures.” J. Contaminant Hydro., 15, 57–71.
20.
Marthandan, M. V., and Acree, W. E. ( 1987). J. Chem. Engrg. Data, 32, 301–303.
21.
Mihelcic, J. R. ( 1990). “Modeling the potential effect of additives on enhancing the solubility of aromatic solutes contained in gasoline.” Ground Water Monitoring Rev., 10(3), 132–137.
22.
Morris, K. R., Abramowitz, R., Pinal, R., Davis, P., and Yalkowsky, S. H. ( 1988). “Solubility of aromatic pollutants in mixed solvents.” Chemosphere, 17(2), 285–298.
23.
Ogata, A., and Banks, R. B. ( 1961). “A solution of the differential equation of longitudinal dispersion in porous media.” Profl. Paper 411-A, USGS.
24.
Poulsen, M. M., Lemon, L., and Barker, J. F. ( 1991). “Chemical fate and impact of oxygenates in ground water: Solubility of BTEX from gasoline-oxygenate compounds.” Publ. No. 4531, American Petroleum Institute, Washington, D.C.
25.
Poulsen, M. M., Lemon, L., and Barker, J. F. ( 1992). “Dissolution of monoaromatic hydrocarbons into ground water from gasoline-oxygenated mixtures.” Envir. Sci. and Technol., 26, 2483–2489.
26.
Rao, P. S. C., Lee, L. S., and Pinal, R. ( 1990). “Cosolvency and sorption of hydrophobic organic chemicals.” Envir. Sci. and Technol., 24(5), 647–653.
27.
Rubino, J. T., and Yalkowsky, S. H. ( 1987). “Cosolvency and deviations from log-linear solubilization.” Pharm. Res., 4(3), 231–236.
28.
Schwarzenbach, R. P., Gschwend, P. M., and Imboden, D. M. ( 1993). Environmental organic chemistry, Wiley, New York.
29.
Shiu, W. Y., Maijanen, A., Ng, A. L. Y., and Mackay, D. ( 1988). “Preparation of aqueous solutions of sparingly soluble organic substances: II. Multicomponent systems—Hydrocarbon mixtures and petroleum products.” Env. Toxicol. Chem., 7, 125–137.
30.
Verschueren, K. ( 1996). Handbook of environmental data on organic chemicals, 3rd Ed., Van Nostrand Reinhold, New York.
31.
Williams, N. A., and Amidon, G. L. ( 1984). “Excess free energy approach to estimation of solubility in mixed solvent systems: 1. Theory.” J. Pharm. Sci., 73(1), 9–13.
32.
Yalkowsky, S. H. ( 1985). Proj. Completion Rep. CR 811852-01, U.S. Environmental Protection Agency, Ada, Okla.
33.
Yalkowsky, S. H. ( 1986). Proj. Completion Rep. CR 812581-01, U.S. Environmental Protection Agency, Ada, Okla.
34.
Yalkowsky, S. H., and Roseman, T. ( 1981). Techniques of solubilization of drugs, S. H. Yalkowsky, ed., Marcel Dekker, New York, 91–134.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 127 • Issue 3 • March 2001
Pages: 208 - 216
History
Received: Jun 24, 1999
Published online: Mar 1, 2001
Published in print: Mar 2001
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