Oxidação química de hidrocarbonetos em solo arenoso e argiloso inundados com água contaminada

Abstract

Problems with contamination in groundwater happen with frequency worldwide. The most common contaminants are the continuous sources of the fossil fuels. Between the fuels refined from crude oil a one octanada gasoline, that addition of natural compounds, in Brazil the gasoline still are added with 27% for organic ethyl alcohol. Alcohol additive enhances the BTXE contamination in aqueous and Water / Soil interactions means. This is due to increased lipid solubility and hidrossorção that one alcohol molecule adds on monoaromatic hydrocarbons. In addition to the gradual spread of the contamination plume, some decontamination treatments reduct the concentration so impracticable by bio-physical-chemical hazards that attack first as molecules minor and end up not attacking the contaminant in focus (BTXE). Considering these problems, created up a study divided into 5 steps in where everyone evaluates hum appearance: remediation technique, soil parameters, contaminant and oxidative agent (Fenton); the concentration analysis BTXE do in soil within water awash in diffusive medium with aid hum horizontal reactor. In doing were separated reactors 5 sampling points, what were monitored by time function. The results were very favorable; decreasing the concentration of up to 95% do not definitive sandy soil experiment. Was notes the clay soil was twice needed rhythm paragraph cause a similar effect the contaminant as the sandy and what would need at least double the oxidizing agent concentration paragraph cause the same effect. On the ground reactor to clay, concentration loss showed a rough effectiveness 50% lower as a same as sand conditions. With the observation of results on different sampling points, there was that not occurred so that a contaminant degradation, but happened a reverse migration of the plume, demonstrating be a phenomenon able to prevent or decrease its movement