The optimum choice of land plots for adsorption of polychlorined biphenyls for further remediation

The paper is devoted to questions on adsorption of polychlorined biphenyls (PCB) in soil. Despite known prohibition ordered by international recommendation acts relating utilization of PCB in industry issued several years ago, due to their dielectrical properties, these materials are still used in some spheres of industrial production. The global cycle of PCB propagation consists of such processes as pollution of soil, water basins and atmosphere. The final products of these processes should themselves pass the remediation procedures, i.e. soil, water and air resources should be cleaned from PCB. The dual nature of the task related with remediation of land plots polluted with PCB is noted. In the first formulation, the task on achieving the high effectiveness of remediation of land plots contaminated by PCB is to be solved. The question is considered on developing technological procedures on solution of the above task concerning transfer of PCB to media of pollution. The known linear regression equation representing the dependence between sorption constant, area of sorption surface and total number of organic carbon is used. In the second formulation, the task on achievement of maximum effectiveness of adsorption of PCB by different components of soil is considered. The task on optimum choice of land plots where PCB is accumulated and optimization of industrial products containing PCBis done. The application of the linear programming method makes it possible to determine the optimum value of such parameters of soil components as total amount of organic compounds and area of contacting surface upon given values of sorption coefficients. The practical example of utilization of suggested optimization procedure is given. The obtained optimum values of searched parameters make it possible to carry out selection of soil type most appropriate for related cleaning industries.

remediation, polychlorined biphenyls, optimization, organic compounds, soil, remediation effectiveness

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