Effectiveness of the natural bacterial flora, biostimulation and bioaugmentation on the bioremediation of a hydrocarbon contaminated Antarctic soil

作者: Lucas Ruberto , Susana C. Vazquez , Walter P. Mac Cormack

DOI: 10.1016/S0964-8305(03)00048-9

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摘要: Abstract Microcosms systems ( 250 g soil in 1 l flasks) were performed Jubany Station (King George Island, South Shetland Islands) to analyse biodegradation of gas-oil Antarctic soils under natural conditions. Abiotic loss hydrocarbons, activity indigenous microflora and biostimulation with N P studied. In addition, biaugmentation a previously isolated psychrotolerant strain (B-2-2) was analysed. Hydrocarbon concentration, heterotrophic hydrocarbon-degrading bacterial counts predominant groups evaluated during 51 days. A significant hydrocarbons observed abiotic control. Indigenous showed increased hydrocarbon-degrading/heterotrophic ratio. This fact associated degrading (35% higher than the control). Bioaugmentation B-2-2 improved bioremediation efficiency (75% hydrocarbon removed). High levels produced an initial inhibition growth. Finally, diversity reduced contaminated soil. Our results that autochthonous flora from is able degrade important fraction bioaugmentation represents valuable alternative tool improve bioremediation.

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