Biodegradation of Oil Refinery Residues Using Mixed-Culture of Microorganisms Isolated from a Landfarming

In this study, the potential for using an inoculum composed of a mixed-culture of bacteria and fungi, isolated from a landfarming at the Paulinia Oil Refinery, Brazil, to degrade oil residues generated in the process of petroleum refinement was investigated. The isolation of these microorganisms was carried out beforehand, assuming that the., re would be better adapted to petroleum hi)(hydrocarbons, as the landforming consisted of an area impacted by the deposit of such compounds. The Bartha and Pramer respirometric test was used to measure the rate of biodegradation of the hydrocarbons 15, the mixed-culture of microorganisms via the evolution of CO2. The results obtained efficiency of biodegradation showed no significant differences (P>0.05), indicating no obtained with respect to the increase in the biodegradation process using the inoculum. The addition of nutrients (N, P, K) also did not contribute to an increase in biodegradation of the oil residue studied.