Abstract

BAZTAN, Maite Soledad; PUCCI, Oscar Héctor  and  PUCCI, Graciela Natalia. Electrobiorremediation of a Soil with an Old Hydrocarbon Contamination. Acta biol.Colomb. [online]. 2015, vol.20, n.2, pp.145-152. ISSN 0120-548X.  https://doi.org/10.15446/abc.v20n2.4525.

Electrobioremediation (EKB) is a hybrid technique that combines bioremediation with electrokinetics. EKB uses bioremediation to degrade hydrocarbon contaminants and EK to mobilize them. The aim of this study was to use a technique for increasing the bioavailability of the hydrocarbons in soil pollution. The 63-day experiment was conducted in a three compartment glass vial connected by three salt bridges of phosphate buffer that established a voltage difference and maintained soil pH optimum for bacterial life value​​. pH, moisture, total petroleum hydrocarbons (TPH) and bacteria were determined. The results showed a decrease in hydrocarbon, the best results were close to the cathode, where only 9.4 % and 5.46 % of alkanes and polyaromatic hydrocarbons were left. In the control cell these values ​​were 15.28 and 14.4 % respectively, while the center generated less degradation with 19.49 % and 17.88% of alkanes and PAH hydrocarbons left. We conclude that the results from the laboratory study indicated that this technique gives the possibility of increasing biodegradation in soils with previous biological treatments.

Keywords : electrobioremediation (EKB); oil contaminated soil.

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