期刊名称：Journal of Environmental Science and Technology
印刷版ISSN：1994-7887
电子版ISSN：2077-2181
出版年度：2011
卷号：4
期号：2
页码：150-157
DOI：10.3923/jest.2011.150.157
出版社：Asian Network for Scientific Information
摘要：The purpose of this study is to provide models for quick assessment of vaporized hydrocarbon from an oil spill ed soil. Vaporization is a dominant mechanism which manifests at the initial period of crude oil spill . Quantification of these vaporized hydrocarbons without going through the rigorous methods of weighing and other experimental methods is always beneficial to science and technology. Modeling of the crude oil vaporization rates enhances quick quantification of vaporized hydrocarbon concentrations. In this study, the experimental data obtained from the vaporization process of crude oil of different consistency (different hydrocarbon concentrations) spiked on different soil samples (soils of different textural characteristics) were fitted into the following kinetic models; zero, first and second order. It was observed that zero order kinetics best fitted the vaporization of sample A crude oil (crude oil of the highest hydrocarbon concentration) from different soil samples with vaporization from soil D (soil with the highest percentages of clay and organic matter ) showing the highest linear coefficient (R2) of 0.95. The kinetic study equally showed that first order kinetic model was sufficient to quantify the vaporization rate of crude oil sample C (crude oil sample with lowest hydrocarbon concentration) given the fact that the rate equation models for its vaporization from all the soil samples showed linear coefficients (R2) of between 0.611-0.87. Vaporization rate of oil sample B obeyed the second order kinetic model. Generally, the results showed the dependability of the kinetic models to varying crude oil and soil type s. The models help us get good insight into providing solution to our environmental problems as it pertains to crude oil spill on land.
