Microbial oxidation of mineral oils in Barataria Bay bottom deposits

ZoBell, Claude E.; Prokop, Joseph F.

doi:10.1002/jobm.19660060303

Cited by 19 publications

(14 citation statements)

References 24 publications

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“…In addition to that deposition of petroleum hydrocarbons towards, the bottom lead to increase the bacterial aggregates which feed upon them, then the biodegradation will increase in the area following the increase oxygen and nutrients like phosphate and nitrate [32]. This is why petroleum hydrocarbons are high at winter and low at summer [33].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Total Hydrocarbons Levels and Traces Metals in Water and Sediment from Main Outfall Drain in Al-Nassiriya City/Southern Iraq

Maktoof¹,

Al-Khafaji²,

Zahraw³

2014

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This study was conducted during Dec2011-Nov2012 on three stations located in the south sector of Main Outfall Drain (MOD) River. Station 1 was near Al-Holandee Bridge which was the general carriage way in the center of Al-Nassiriya city, station 2 was 20 km far from the first station, while station 3 was in the beginning of the new branch. This study reveals the Seasonal Variation of Total petroleum hydrocarbons (TPHs) in both surface waters, sediment and it is related with trace metals nickel and vanadium in water (dissolved, particulate) and sediment (residual and exchangeable) phases. Also, the study shows the relationships between the concentration of Ni and V with Total Organic Carbon (TOC%) in the sediment.

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Section: Discussionmentioning

confidence: 99%

Evaluation of Total Hydrocarbons Levels and Traces Metals in Water and Sediment from Main Outfall Drain in Al-Nassiriya City/Southern Iraq

Maktoof¹,

Al-Khafaji²,

Zahraw³

2014

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“…Whereas aerobic degradation of hydrocarbons has been studied in great detail, relatively little attention has been paid so far to anaerobic hydrocarbon degradation. The literature contains contradictory reports on the 'ifs' and 'hows' of hydrocarbon biodegradation in the absence of oxygen [1][2][3][4][5]. Earlier reports claiming degradation of saturated hydrocarbons by, e.g., sulphate-reducing bacteria are probably a consequence of poor anaerobic techniques together with poorly defined culture conditions, and usually deal with mixed cultures of aerobic and anaerobic bacteria or with growth of anaerobes on substrate contaminations [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Degradation of unsaturated hydrocarbons by methanogenic enrichment cultures

Schink

1985

FEMS Microbiology Letters

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The biodegradability of hydrocarbons under anaerobic conditions was studied in enrichment cultures using mineral media inoculated with sewage sludge or sediment samples of limnic and marine origin. No indication of methanogenic degradation was obtained with either n‐hexane, n‐hexadecane, n‐heptadecane, 1‐hexene, cis‐2‐hexene, trans‐2‐hexene, isoprene, 1‐hexine, benzene, toluene, xylene, cyclohexene, cycloheptatriene, cyclopentadiene, styrene, naphthalene, azulene, or β‐carotene. Squalene was incompletely converted to methane and carbon dioxide. Complete degradation was observed with 1‐hexadecene. Methanogenic subcultures were maintained on 1‐hexadecene and squalene. Both enrichments contained after several transfers Methanospirillum hungatei and Methanothrix soehngenii as prevalent methanogenic bacteria. Acetate (≤80 μM) was the only intermediary product detected indicating that degradation proceeded via hydrogen‐dependent syntrophic β‐oxidations. Short rods on hexadecene and cocci on squalene were found to be associated with substrate degradation. The results indicate that terminal double bonds can be sufficient to allow methanogenic degradation of hydrocarbons whereas branching and terminal ring closures may significantly contribute to hydrocarbon stability in anoxic environments.

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“…Anaerobic degradation of hydrocarbons has repeatedly been reported in the elder literature (Novelli and ZoBell 1944;ZoBell 1946;Rosenfeld 1947;ZoBell and Prokop 1966;Davis and Yarbrough 1966) but until now no conclusive evidence for significant anaerobic degradation of saturated hydrocarbons has been provided. The general theory today is that microbial attack on saturated hydrocarbons depends on the action of oxygenases which need molecular oxygen as a reactant (Foster 1962;Gibson 1975;Perry 1979;Atlas 1981).…”

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confidence: 98%

Fermentation of acetylene by an obligate anaerobe,Pelobacter acetylenicus sp. nov.

1985

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Abstract. Four strains of strictly anaerobic Gram-negative rod-shaped non-sporeforming bacteria were enriched and isolated from marine and freshwater sediments with acetylene (ethine) as sole source of carbon and energy. Acetylene, acetoin, ethanolamine, choline, 1,2-propanediol, and glycerol were the only substrates utilized for growth, the latter two only in the presence of small amounts of acetate. Substrates were fermented by disproportionation to acetate and ethanol or the respective higher acids and alcohols. No cytochromes were detectable; the guanine plus cytosine content of the DNA was 57.1 _+ 0.2 tool%. Alcohol dehydrogenase, aldehyde dehydrogenase, phosphate acetyltransferase, and acetate kinase were found in high activities in cell-free extracts of acetylene-grown cells indicating that acetylene was metabolized via hydration to acetaldehyde. Ethanol was oxidized to acetate in syntrophic coculture with hydrogen-scavenging anaerobes. The new isolates are described as a new species in the genus Pelobacter, P. acetylenicus.

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Microbial oxidation of mineral oils in Barataria Bay bottom deposits

Cited by 19 publications

References 24 publications

Evaluation of Total Hydrocarbons Levels and Traces Metals in Water and Sediment from Main Outfall Drain in Al-Nassiriya City/Southern Iraq

Evaluation of Total Hydrocarbons Levels and Traces Metals in Water and Sediment from Main Outfall Drain in Al-Nassiriya City/Southern Iraq

Degradation of unsaturated hydrocarbons by methanogenic enrichment cultures

Fermentation of acetylene by an obligate anaerobe,Pelobacter acetylenicus sp. nov.

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