ACTION OF THE REACTIVE MEANS HYDROGEN PEROXIDE AND ACTIVATED COAL IN REMEDIATION OF CONTAMINED SOILS BY BTEX

摘要

This research had as objective to evaluate the potential of permeable reactive barriers in the reduction of aromatical hydrocarbons BTEX (Benzene, Toluene, Ethylbenzene and Xylenes) in the ground, coming from gasoline leak. The experiment was carried out in a laboratorial scale, simulating two types of PRB called: AS (H2O2 + soil) and ACA (H2O2 + activated coal). The BTEX concentrations in the gasoline sample were assessed when entering in PRB and in the percolate in pre-established retention times of 24; 36; 48; 60; 72 and 84h, using gas chromatography. The obtained results showed that the two reactive barriers reduced the BTEX concentration, close at permissible levels of contamination and prevention, and the ACA barrier presented better results.