Bioremediation of soil contaminated by diesel oil

Brazilian Journal of Microbiology

Fatima Menezes Bento²  Flávio Anastácio De Oliveira Camargo²  Benedict Okeke¹  Willian Thomas Frankenberger-júnior¹ 

[1] ,Universidade Federal do Rio Grande do Sul Departamento de Solos Porto Alegre RS ,Brasil

关键词: natural attenuation;    bioagmentation;    biostimulation;    total petroleum hydrocarbon;    atenuação natural;    Bioaumentação;    bioestimulação;    hidrocarboneto de petróleo;   

DOI  :  10.1590/S1517-83822003000500022

来源: SciELO

【 摘 要 】

Were evaluated natural attenuation, biostimulation and bioaugmentation on the degradation of total petroleum hydrocarbons (TPH) in soils contaminated with diesel oil. Bioaugmentation showed the greatest degradation in the light (C12 - C23) fractions (72.7%) and heavy (C23 - C40) fractions of TPH (75.2%) and natural attenuation was more effective than biostimulation. The greatest dehydrogenase activity was observed upon bioaugmentation of the Long Beach soil (3.3-fold) and the natural attenuation of the Hong Kong soil sample (4.0-fold). The number of diesel oil degrading microorganisms and heterotrophic population was not influenced by the bioremediation treatments. The best approach for bioremediation of soil contaminated with diesel oil is the inoculum of microorganisms pre-selected from their own environment.

【 授权许可】

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