Avaliação experimental de extração multifásica para um processo de remediação de postos de combustíveis

Abstract

Currently, there is a growing concern about contaminated environments, particularly with regard to soil and groundwater. The increase in the number of gas stations and, consequently, the greater consumption of petroleum derivatives has intensified the need for control and the development of technologies that can increase the efficiency of remediation of contaminated sites. The objective of this study was to analyze multiphase extraction as a technological procedure within the scope of remediation of contaminated soils. The study examined several parameters in the extraction process using a bench-scale experiment. Specifically, Hele-Shaw cell equipment was used, varying the thickness of the water/oil interface, the depth, the pumping regime and finally analyzing the level of the suction filter. Through the experiment it was possible to evaluate the performance of each parameter in different situations, observing the sensitivity and physical effect on the behavior of the multiphase extraction process in the section of a piezometer well. This analysis was based on the geometric principles of the soil interface and simulating the capillary environment, contributing to decision-making and improving the use of equipment in remediation.