Browsing by Subject "adsorption of hydrocarbons"

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Access status: Open Access ,
Badania laboratoryjne sorpcji produktów naftowych w gruntach ilastych
(2011) Fąfara, Zbigniew; Borysławska, Edyta
A significant impact on the migration of oil products in the soil have sorption processes of hydrocarbons on mineral grains. Adsorption of hydrocarbons in the soil will cause a reduction of pollution flux, thus limiting the spatial extent of contamination. Desorption of hydrocarbons extends the migration process over time. Overall, it can be concluded that the intensity of sorption processes is an important features of the soil, that is required to assess the degree of risk. There are several models of loose soils prepared, which had been stirred in a certain proportion with clay substance. Then the volume of the adsorption of selected petroleum products in prepared soil models was measured. It confirmed the obvious fact that the higher increase of the intensity of sorption processes of hydrocarbons the bigger amount of clay substances in the soil. The obtained quantitative relations can lead to many interesting observations.
Access status: Open Access ,
Evaluation of adsorption of petroleum products in the soil depending on its granulation
(2013) Fąfara, Zbigniew; Stępień, Agnieszka
Thanks realized in 2011 in a wide range of laboratory investigations of adsorption of selected petroleum products in different models of soil author has an extensive set of experimental data. They lead to a series of qualitative and quantitative analysis. They confirm the generally known fact that the intensity of the adsorption of hydrocarbons strongly depends on some features of the oil products (mainly viscosity) and soil (especially grain). It is possible to fit the regression equation using statistical methods, which permits to estimate the adsorption coefficient of different oil products on the basis of parameters describing the granulation of soil. Those obtained equations are characterized by a high degree of suitability to the experimental data and can be successfully used in numerical modeling of hydrocarbon migration in the soil.
Access status: Open Access ,
Magnitude of hydrocarbon sorption capacity of sandy soils analysis
(2013) Fąfara, Zbigniew
This paper summarizes the author's previous studies on the sorption of hydrocarbons in sandy soils. Completed several independent series of measurements for various models of soil. There were used unleaded petrol and diesel fuel as petroleum products. A large amount of collected information allows you to draw some interesting conclusions, which may be the basis for generalizations. The detected regularity can afford to develop a several models that can be successfully used to describe the intensity of hydrocarbon sorption processes in soils. These processes have a significant impact on the hydrocarbon migration in the soil by reducing the pollution zone and extending the time of migration. Inaccurate description of the magnitude sorption capacity will lead to large differences between the actual scenario of hydrocarbon migration in soil and its numerical simulation.