Biodegradation of oil refinery residues using mixed-culture of microorganisms isolated from a landfarming

Abstract

In this study, the potential for using an inoculum composed of a mixed-culture of bacteria and fungi, isolated from a landfarming at the Paulínia 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 they would be better adapted to petroleum hydrocarbons, as the landfarming 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 by the mixed-culture of microorganisms via the evolution of CO 2 . The results obtained with respect to the efficiency of biodegradation showed no significant differences (P>0.05), indicating no increase in the biodegradation process using the inoculum. The addition of nutrients (N, P, K) also did notcontribute to an increase in biodegradation of the oil residue studied.

Biodegradation of Industrial Oil-Polluted Wastewater in Egypt by Bacterial Consortium Immobilized in Different Types of Carriers

“…These results agree with other studies [26][27][28][29]. Sunita et al [29] reported faster utilization of hydrocarbon by mixed cultures than the individual bacterial strain .The phenomenon was explained by Venosa and Zhu [27], who assumed that there is no single strain with the metabolic capacity to degrade all components found within crude oil.…”

Isolation and Characterization of Biosurfactant-Producing Bacteria Isolated From Petroleum Contaminated Sites With the Potential to Be Used in Bioremediation

“…Stenotrophomonas also had been isolated from petroleum and refinery site and was confirmed of its ability to degrade Methyl tert-butyl ether (MTBE)-contaminated water [31]. Furthermore, Stenotrophomonas maltophilia was also being used together with other bacteria in biodegradation of oil residues from petroleum refinement and other bioremediation and phytoremediation studies [32,33].…”

Alternatives for remediation and decontamination of soils from Brazil

“…Microorganisms are considered efficient biodegradation promoters, because of its abundance, diversity of species and catabolic and anabolic versatilities, as well as its capacity of adaptation to adverse environmental conditions (Moraes and Tornisielo, 2009). Several metabolic pathways of degradation of PHA's have been identified in various microorganisms.…”