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  • efficient pahs biodegradation by a bacterial consortium at flask and bioreactor scale

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 695
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     in this work, the biodegradation of three polycyclic aromatic hydrocarbons (pahs) such as phenanthrene (phe), pyrene (pyr) and benzo[a]anthracene (baa) has been investigated. a bacterial consortium consisting of two strains was used for the first time based on preliminary promising biodegradation data. they were tentatively identified asstaphylococcus warneri and bacillus pumilus. degradation values higher than 85% were obtained for each single pah when operating at flask scale, whereas minimum levels of 90% of pahs removal were obtained after just 3 days of cultivation at bioreactor scale. the operation in cometabolic conditions led to maximum levels about 75% and 100% at flask and bioreactor scale, respectively. all the experimental data were analyzed in the light of logistic and luedeking and piret type models, with the purpose to better characterize the biodegradation process by s. warneri and b. pumilus. finally, the metabolic pathway followed to degrade each pah was ascertained.

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