Evaluación de Dos Sustratos de Landfarming para el Tratamiento de Suelos Contaminados con Hidrocarburos

Abstract

The objective of this research was to evaluate two organic substrates in the landfarming technique for the bioremediation of soils contaminated with hydrocarbons, as an alternative for their treatment due to the presence of environmental liabilities such as pools with hydrocarbon wastes, generated during the development of the hydrocarbon industry in Ecuador. generated during the development of the hydrocarbon industry in Ecuador. Carried out in the PEPDA, Sacha Field of PETROPRODUCCIÓN. The materials used were two organic substrates (compost and bocashi) in concentrations of 30%, 20% and 10% (VIV) and 0.03m' per experimental unit of soil contaminated with 4,208 mg/Kg/kg (VIV). contaminated with 4,208 mg/kg of TPH above the permissible limit and 0.46 mg/kg of Cd, 14.17 mg/kg of Ni and 4.46 mg/kg of Cd. mg/kg Ni and 4.46 mg/kg Pb, heavy metals that are below the permissible limit for agricultural soil, according to the RAO for agricultural soil, according to the RAOH, decree 1215, through a factorial design a x b of seven treatments, using the land treatments, applying the landfaming technique with biostimulation and bioaugmentation of native hydrocarbon-degrading and biostimulation of native hydrocarbon degrading bacteria, monitoring the response and control variables during the four months of and control variables during the four months of bioremediation. Through this process, it was possible to TPH concentration was reduced below this limit, in a range of 62.30% to 72.37%, which is statistically 72.37%, which statistically did not show significant differences during the four months of bioremediation. bioremediation, so that the compost and bocashi at 30%, 20% and 10% are suitable to be used in the landfaming technique. used in the landfaming technique for the bioremediation of soils contaminated with hydrocarbons. hydrocarbons.