Hydrocarbon degrading microflora in a tropical fuel-contaminated aquifer: assessing the feasibility of PAH bioremediation
International Journal of Environmental Research. 2012; 6 (1): 345-352
in English
| IMEMR
| ID: emr-122474
ABSTRACT
An aquifer located within a petroleum processing plant in Moin, Costa Rica, suffers hydrocarbon pollution. This study aimed to determine the ability of indigenous microorganisms from this site to degrade polycyclic aromatic hydrocarbons [PAHs] to evaluate the feasibility of an eventual bioremediation process. Aerobic conditions were found in the aquifer, while microbial analyses of the groundwater indicated the presence of important hydrocarbon-degrading populations. Sixteen PAH-degrading strains were isolated with the ability to grow on naphthalene [5 strains], phenanthrene [3], fluorene [6] and pyrene [2]. Most of the identified isolates belonged to the genus Pseudomonas, although, Comamonas, Sphingomonas Stenotrophomonas and Delftia were also found. A mixture of selected strains was evaluated by its performance of PAH degradation in soil-slurry systems, where efficiency of removal was naphthalene > fluorene > phenanthrene > pyrene. This study is an initial approach to evaluate the feasibility of applying a bioremediation process in the contaminated site
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Index:
IMEMR (Eastern Mediterranean)
Main subject:
Phenanthrenes
/
Polycyclic Aromatic Hydrocarbons
/
Pseudomonas
/
Pyrenes
/
Groundwater
/
Biodegradation, Environmental
/
Petroleum
/
Comamonas
/
Sphingomonas
/
Stenotrophomonas
Language:
English
Journal:
Int. J. Environ. Res.
Year:
2012
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