Article

Studies on the evaporation of crude oil and petroleum products: I. The relationship between evaporation rate and time

Department of Natural Resource Sciences, McGill University, Macdonald Campus, St. Anne de Bellevue, Quebec, Canada
Journal of Hazardous Materials (Impact Factor: 4.53). 10/1997; 56(3):227-236. DOI: 10.1016/S0304-3894(97)00050-2

ABSTRACT

The time dependance of evaporation was studied for several crude oils and petroleum oil products. Evaporation was determined by weight loss measured on a balance and recorded constantly on a computer. Examination of the data shows that most oil and petroleum products evaporate at a logarithmic rate with respect to time. This is attributed to the overall logarithmic appearance of many components evaporating at different linear rates. Petroleum products with fewer chemical components, such as diesel fuel, evaporate at a rate which can be best modelled as a square root of time. The particular behaviour is shown to be a result of the number of components evaporating by experimentation with artificial oils consisting of 1 to 15 components. Oils with greater than 7 components evaporating at one time can be modelled with logarithmic equations; those with 3 to 7 components, with square root equations.

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    • "Researchers used the volatilization rate of isopropylbenzene to adapt the expression of water volatilization to predict and describe oil and petroleum product volatilization (Mackay and Matsugu, 1973; Stiver and Mackay, 1984; Jones, 1992). However, subsequent studies have shown that the volatilization of pure petroleum products are not boundary-layer regulated, and the relationship of the oil volatilization rate with wind speed and vessel diameter does not follow the same processes as water (Fingas, 1997, 1998, 2004). As for the volatilization of oil pollutants from porous media, these processes are much more complex (Huang and Shi, 2003). "
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