Biodegradation of aromatic hydrocarbons in crude oils from the Barrow Sub-basin of Western Australia

Volkman, John K.; Alexander, Robert; Kagi, Robert I.; Rowland, Steven J.; Sheppard, P.N.

doi:10.1016/0146-6380(84)90084-6

Cited by 290 publications

(121 citation statements)

References 30 publications

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“…The organic matter of low metamorphic slates contains mainly aromatic compounds. With increasing level of biodegradation, however, aromatic compounds are also decomposed (Volkman et al, 1984). This suggests the importance of fungi that produce these enzymes in the degradation process.…”

Section: Introductionmentioning

confidence: 99%

Variable effects of labile carbon on the carbon use of different microbial groups in black slate degradation

Seifert¹,

Trumbore²,

Xu³

et al. 2011

Geochimica et Cosmochimica Acta

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Weathering of ancient organic matter contributes significantly to biogeochemical carbon cycles over geological times. The principle role of microorganisms in this process is well recognized. However, information is lacking on the contribution of individual groups of microorganisms and on the effect of labile carbon sources to the degradation process. Therefore, we investigated the contribution of fungi, Gram-positive and Gram-negative bacteria in the degradation process using a column experiment. Investigations were performed on low metamorphic black slates. All columns contained freshly crushed, sieved (0.63-2 mm), not autoclaved black slates. Two columns were inoculated with the lignite-degrading fungus Schizophyllum commune and received a culture medium containing 13 C labeled glucose, two columns received only this culture medium and two control columns received only water.The total mass balance was calculated from all carbon added to the slate and the CO 2 and DOC losses. Phospholipid fatty acids (PLFA) were extracted to investigate microbial communities. We used both the compound specific 14 C and 13 C signal of the PLFA to quantify carbon uptake from black slates and the glucose of the culture medium, respectively.The total carbon loss in these columns exceeded the amount of added carbon by approximately 60%, indicating that black slate carbon has been used. PLFA associated with Gram-positive bacteria dominated the indigenous community and took up 22% of carbon from black slate carbon, whereas PLFA of Gram-negative bacteria used only 8% of carbon from the slates. PLFA of Gram-negative bacteria and fungi were both mostly activated by the glucose addition. The added Schizophyllum did not establish well in the columns and was overgrown by the indigenous microbial community. Our results suggest that especially Gram-positive bacteria are able to live on and degrade black slate material. They also benefit from easy degradable carbon from the nutrient broth. In natural environments priming due to root exudates might consequently enhance weathering.

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Section: Introductionmentioning

confidence: 99%

Variable effects of labile carbon on the carbon use of different microbial groups in black slate degradation

Seifert¹,

Trumbore²,

Xu³

et al. 2011

Geochimica et Cosmochimica Acta

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“…In the anaerobic metabolism of low molecular weight aromatic compounds, on the other hand, aromaticity is broken by reduction followed by hydrolytic ring opening as observed in most cases (Harwood et al, 1998). In previous studies, the bioresistance of alkyl benzenes and polynuclear aromatic hydrocarbons (PAHs) increases with numbers of aromatic rings and alkyl substituents (Volkman et al, 1984;Williams et al, 1986;Peters et al, 2005), but decrease with the length of side chain (Huang et al, 2004).…”

Section: O2 Classmentioning

confidence: 99%

Distribution of acids and nitrogen-containing compounds in biodegraded oils of the Liaohe Basin by negative ion ESI FT-ICR MS

Liao

Shi

Hsu

et al. 2012

Organic Geochemistry

106

101

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“…Biodegradation typically acts first on n-alkanes, followed by branched and alicyclic alkanes and PAH (18). To assess the effects of these processes, we analyzed 43 samples of subsurface oil collected at intervals from seven locations along the GOA outside PWS from 1989 through 2005, and compared these with 38 samples collected from inside PWS in 2001 ( Figure 1).…”

Section: Methodsmentioning

confidence: 99%

Slightly Weathered Exxon Valdez Oil Persists in Gulf of Alaska Beach Sediments after 16 Years

Short

Irvine²,

Mann³

et al. 2007

Environ. Sci. Technol.

129

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Oil stranded by the 1989 Exxon Valdez spill has persisted in subsurface sediments of exposed shores for 16 years. With annualized loss rates declining from ∼68% yr -1 prior to 1992 to ∼4% yr -1 after 2001, weathering processes are retarded in both sediments and residual emulsified oil ("oil mousse"), and retention of toxic polycyclic aromatic hydrocarbons is prolonged. The n-alkanes, typically very readily oxidized by microbes, instead remain abundant in many stranded emulsified oil samples from the Gulf of Alaska. They are less abundant in Prince William Sound samples, where stranded oil was less viscous. Our results indicate that, at some locations, remaining subsurface oil may persist for decades with little change.

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Biodegradation of aromatic hydrocarbons in crude oils from the Barrow Sub-basin of Western Australia

Cited by 290 publications

References 30 publications

Variable effects of labile carbon on the carbon use of different microbial groups in black slate degradation

Variable effects of labile carbon on the carbon use of different microbial groups in black slate degradation

Distribution of acids and nitrogen-containing compounds in biodegraded oils of the Liaohe Basin by negative ion ESI FT-ICR MS

Slightly Weathered Exxon Valdez Oil Persists in Gulf of Alaska Beach Sediments after 16 Years

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