NDLI: Microcosm evaluation of autochthonous bioaugmentation to combat marine oil spills.

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Microcosm evaluation of autochthonous bioaugmentation to combat marine oil spills.

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Microcosm evaluation of autochthonous bioaugmentation to combat marine oil spills.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Nikolopoulou, Maria Eickenbusch, P. Pasadakis, Nikos Venieri, Danae Kalogerakis, Nicolas
Description	Country affiliation: Greece Author Affiliation: Nikolopoulou M ( School of Environmental Engineering, Technical University of Crete, Chania, Greece.)
Abstract	Oil spills can be disastrous to any ecosystem. Bioremediation through bioaugmentation (addition of oil-degrading bacteria) and biostimulation (addition of nutrients N&P) options can be a promising strategy for combating oil spills following first response actions. However, bioaugmentation is one of the most controversial issues of bioremediation since nutrient addition alone has a greater effect on oil biodegradation than the addition of microbial products that are highly dependent on environmental conditions. There is increasing evidence that the best way to overcome the above barriers is to use microorganisms from the polluted area, an approach proposed as autochthonous bioaugmentation (ABA) and defined as the bioaugmentation technology that uses exclusively microorganisms indigenous to the sites (soil, sand, and water) to be decontaminated. In this study, we examined the effectiveness of an ABA strategy for the successful remediation of polluted marine environments. A consortium was enriched from seawater samples taken from Elefsina Gulf near the Hellenic Petroleum Refinery, a site exposed to chronic crude oil pollution. Pre-adapted consortium was tested alone or in combination with inorganic nutrients in the presence (or not) of biosurfactants (rhamnolipids) in 30-day experiments. Treatment with fertilizers in the presence of biosurfactants exhibited the highest alkane and PAH degradation and showed highest growth over a period of almost 15 days. Considering the above, the use of biostimulation additives in combination with naturally pre-adapted hydrocarbon degrading consortia has proved to be a very effective treatment and it is a promising strategy in the future especially when combined with lipophilic fertilizers instead of inorganic nutrients. Such an approach becomes more pertinent when the oil spill approaches near the shoreline and immediate hydrocarbon degradation is needed.
File Format	HTM / HTML
ISSN	18716784
Issue Number	6
Volume Number	30
e-ISSN	18764347
Journal	New Biotechnology
Language	English
Publisher	Elsevier
Publisher Date	2013-09-25
Publisher Place	Netherlands
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Biomedical Engineering Discipline Molecular Biology Bacteria Growth & Development Microbial Consortia Physiology Petroleum Seawater Microbiology Water Pollutants, Chemical Metabolism Biodegradation, Environmental Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Medicine Molecular Biology Bioengineering Biotechnology

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