ISSUES OF CREATING A TWO-COMPONENT MODEL OF HYDROCARBONS DESORPTION IN OIL-CONTAMINATED SOIL FOR HETEROGENEOUS GEOSPACE

Abstract

Background Due to the toxicity and carcinogenicity of many petroleum hydrocarbons, oil-contaminated soil poses a serious threat to the environment, soil ecology and human health. There are one-component and multicomponent kinematic models of mass transfer, while the latter are more suitable for describing the processes of desorption of degraded oil from the soil. At the same time, the existing two-component models are applicable in a homogeneous geophysical space, where the coefficients of fast and slow desorption are constant values. However, in the real world, geophysical space is heterogeneous. The heterogeneity of the geospace is an objective reality, and ways to optimize the desorption of pollutants from this space should be found. Aims and Objectives Analysis of the possibilities of optimal use of the stimulating factor in a heterogeneous geospace, at which the maximum efficiency of the desorption process is achieved. Results The issues of a two-component model of desorption of hydrocarbons from oil-contaminated soil in a heterogeneous geospace are considered. The problem of the formation of a two-component desorption model is formulated, which makes it possible to synthesize the optimal desorption mode when processing soil samples of a heterogeneous geospace with various degrees of hydrocarbon pollution. By using the methods of functional analysis, an optimal mode of two-component desorption in a heterogeneous geospace has been synthesized, at which the highest desorption rate can be achieved.