NDLI: Use of a two-phase partitioning bioreactor for degrading polycyclic aromatic hydrocarbons by a Sphingomonas sp.

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Use of a two-phase partitioning bioreactor for degrading polycyclic aromatic hydrocarbons by a Sphingomonas sp.

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Use of a two-phase partitioning bioreactor for degrading polycyclic aromatic hydrocarbons by a Sphingomonas sp.

Content Provider	Springer Nature Link
Author	Janikowski, T. Velicogna, D. Punt, M. Daugulis, A.
Copyright Year	2002
Abstract	A two-phase partitioning bioreactor (TPPB) utilizing the bacterium Sphingomonas aromaticivorans B0695 was used to degrade four low molecular weight (LMW) polycyclic aromatic hydrocarbons (PAHs). The TPPB concept is based on the use of a biocompatible, immiscible organic solvent in which high concentrations of recalcitrant substrates are dissolved. These substances partition into the cell-containing aqueous phase at rates determined by the metabolic activity of the cells. Experiments showed that the selected solvent, dodecane, could be successfully used in both solvent extraction experiments (to remove PAHs from soil) and in a TPPB application. Further testing demonstrated that solvent extraction from spiked soil was enhanced when a solvent combination (dodecane and ethanol) was used, and it was shown that the co-solvent did not significantly affect TPPB performance. The TPPB achieved complete biodegradation of naphthalene, phenanthrene, acenaphthene and anthracene at a volumetric consumption rate of 90 mg l–1 h–1 in approximately 30 h. Additionally, a total of 20.0 g of LMW PAHs (naphthalene and phenanthrene) were biodegraded at an overall volumetric rate of 98 mg l–1 h–1 in less than 75 h. Degradation rates achieved using the TPPB and S. aromaticivorans B0695 are much greater than any others previously reported for an ex situ PAH biodegradation system operating with a single species.
Starting Page	368
Ending Page	376
Page Count	9
File Format	PDF
ISSN	01757598
Journal	Applied Microbiology and Biotechnology
Volume Number	59
Issue Number	2-3
e-ISSN	14320614
Language	English
Publisher	Springer-Verlag
Publisher Date	2002-04-25
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article
Subject	Medicine Applied Microbiology and Biotechnology Biotechnology

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Use of a two-phase partitioning bioreactor for degrading polycyclic aromatic hydrocarbons by a Sphingomonas sp.

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Use of a two-phase partitioning bioreactor for degrading polycyclic aromatic hydrocarbons by a Sphingomonas sp.

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