The effect of biodegradation on polycyclic aromatic hydrocarbons in reservoired oils from the Liaohe basin, NE China

Huang, Haiping; Bowler, Bernard; Oldenburg, Thomas B. P.; Larter, Stephen R.

doi:10.1016/j.orggeochem.2004.05.009

Cited by 135 publications

(66 citation statements)

References 43 publications

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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: 97%

“…Three samples (L-2, L-3, L-4) are from the deeper Es3 column (1700-1850 m) and four samples (L-5, L-6, L-7, L-8) from the shallower Es1 column (1500-1650 m). These bitumens were generated from the same source rocks of similar maturity (Lu et al, 1990;Koopmans et al, 2002;Huang et al, 2003Huang et al, , 2004. Both columns exhibit a successive intensified biodegradation level toward the oil-water contact.…”

Section: Samples and Pretreatmentmentioning

confidence: 99%

“…1) while regular steranes were altered progressively in the more severely biodegraded oils of the shallower Es1 column (L-5, L-6, L-7 and L-8). Although on a local scale diffusion and mixing may result in homogeneous composition over geological time (England et al, 1987), at large scales mixing is usually inefficient and the observed compositional gradients in the biodegraded oils of two columns can be attributed mainly to biodegradation (Huang et al, 2004).…”

Section: Samples and Pretreatmentmentioning

confidence: 99%

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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

108

101

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Section: O2 Classmentioning

confidence: 97%

Section: Samples and Pretreatmentmentioning

confidence: 99%

Section: Samples and Pretreatmentmentioning

confidence: 99%

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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

108

101

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“…2,17 Resultados semelhantes foram obtidos em outros trabalhos, quando foi verificado que estes parâmetros são uma ferramenta útil para caracterização do ambiente deposicional. 2 Acredita-se que a variabilidade das razões Pr/Fi e RMD seja resultante das condições sulfato redutoras durante o processo deposicional, principalmente pela presença de compostos como ácido sulfídrico (H 2 S) e por polissulfurados (H 2 S n ) interagindo com a matéria orgânica.…”

Section: Ambiente Deposicional E Origem Da Matéria Orgânicaunclassified

“…11,17 Além desta, outras razões também foram utilizadas, dentre as quais 2,4-dimetil-dibenzotiofeno/1,4-dimetil-dibenzotiofeno (2,4-DMDBT/1,4-DMDBT) e 4,6-dimetil-dibenzotiofeno/1,4-dimetil-dibenzotiofeno (4,6-DMDBT/1,4-DMDBT), obtidas através do cromatograma de massa m/z 212; e, por último, a razão de trimetil-dibenzotiofenos (TMDBT), obtido a partir do cromatograma de massa m/z 226, sendo a razão entre o TMDBT (substância 38)/ TMDBT (substância 40).…”

Section: Figura 1 Cromatogramas De Massas Dos íOns: (A) M/z 198 Carunclassified

Avaliação geoquímica de óleos brasileiros com ênfase nos hidrocarbonetos aromáticos

Heckmann¹,

Landau²,

Gonçalves³

et al. 2011

Quím. Nova

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Recebido em 18/10/10; aceito em 15/3/10; publicado na web em 5/5/11 GEOCHEMICAL EVALUATION OF BRAZILIAN OILS WITH EMPHASIS ON AROMATIC HYDROCARBONS. Aromatic compounds are still poorly evaluated in geochemical studies of Brazilian oil samples. For this reason, the objective of this work was to analyze and evaluate 26 oil samples from four Brazilian sedimentary basins. Aromatic hydrocarbon fractions have been analyzed by gas chromatography coupled to mass spectrometry. The results were also compared with previously evaluated saturated hydrocarbon data. Maturation parameters obtained using the 4-and 1-methyl-dibenzothiophenes and trimethyl-dibenzothiophenes led to the best results because a better grouping was observed. For this correlation, the samples were grouped by maturity degree enabling the routine use of these parameters to evaluate oil maturity levels.Keywords: biomarkers; aromatic hydrocarbon; maturity evolution. INTRODUÇÃOO petróleo é uma mistura complexa composta principalmente de hidrocarbonetos saturados, hidrocarbonetos aromáticos, resinas e asfaltenos. O estudo de suas características geoquímicas por meio da análise de biomarcadores é indispensável para a indústria petrolífera. Neste contexto, é de grande importância a avaliação de parâmetros relacionados com a geração, migração e acumulação de petróleo, a fácies estratigráfica da rocha geradora, bem como as profundidades nas quais prevalecem as condições diagenéticas ótimas para a formação do petróleo. 1,2Diversas informações podem ser obtidas a partir dos biomarcadores. O grau de evolução térmica, por exemplo, pode ser monitorado através de diferentes razões de concentrações relativas entre o isô-mero mais estável e o menos estável.2 A aromatização de compostos e a degradação térmica, onde compostos menos estáveis tendem a desaparecer em relação aos mais estáveis, permite estabelecer o grau de evolução de óleos e da matéria orgânica em sedimentos.2 Também é possível o estabelecimento de correlações óleo/óleo e óleo/rocha geradora. Óleos de origens diferentes apresentam composições geoquímicas de biomarcadores distintas, ou seja, óleos de origem marinha e/ou terrestre produzem petróleos de características diferenciadas. Em óleos de origem marinha, a matéria orgânica é proveniente basicamente de plantas aquáticas (fitoplâncton) que conferem uma composição química totalmente diferente dos petróleos de origem terrestre, onde é expressiva a contribuição de matéria orgânica proveniente de vegetais superiores. A correlação óleo/óleo requer parâmetros comumente não alterados por processos geoquímicos, tais como biodegradação, evolução e fracionamento evaporativo. 2Os hidrocarbonetos aromáticos estão entre os maiores constituintes da matéria orgânica sedimentar podendo ser utilizados como biomarcadores, assim como os hidrocarbonetos saturados, esteroides e hopanos. No entanto, hidrocarbonetos aromáticos representados por alquilbenzenos, alquilnaftalenos, alquilfenantrenos e compostos aromáticos sulfurados não são formalmente considerados como biomarcadore...

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Biodegradation of Isoprenoids, Steranes, Terpanes, and Phenanthrenes During In Situ Bioremediation of Petroleum‐Contaminated Groundwater

Beškoski

Miletić

Ilić

et al. 2017

CLEAN Soil Air Water

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The objective of this study was to stimulate microbial biodegradation of petroleum pollution in groundwater and to analyze changes in the abundance and distribution of organic compounds detectable in petroleum. Bioremediation was conducted in a closed bipolar system, by bioaugmentation with consortia of hydrocarbon degrading microorganisms (HD) and biostimulation with nutrients. Comprehensive two‐dimensional gas chromatography–mass spectrometry (GC × GC–MS) was used to visualize all fractions simultaneously. During the study, the content of total petroleum hydrocarbon (TPH) in groundwater decreased by 92.7% of the initial level, and the average rate of biodegradation was 0.1 mg/L per day. Increased numbers of HD were observed and the dominant genera were Pseudomonas, Rhodococcus, Achromobacter, Bacillus, and Micromonospora. In the first 30 days of bioremediation, there was no significant biodegradation of n‐alkanes and petroleum biomarkers – isoprenoids such as pristane and phytane, and polycyclic‐saturated hydrocarbons such as terpanes and steranes. However, after 60 days of bioremediation, more than 95% of n‐alkanes, terpanes and steranes were biodegraded. Phenanthrene and its methyl‐, dimethyl‐, and trimethyl‐isomers were biodegraded and reduced by more than 99% of their initial levels. However, their decomposition had clearly commenced after just 30 days. This is a somewhat surprising result since it follows that the phenanthrenes were more susceptible to biodegradation than the n‐alkanes and isoprenoids. Depending on the microbial community used for bioaugmentation, biodegradation of phenanthrene can precede biodegradation of saturated hydrocarbons.

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The effect of biodegradation on polycyclic aromatic hydrocarbons in reservoired oils from the Liaohe basin, NE China

Cited by 135 publications

References 43 publications

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

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

Avaliação geoquímica de óleos brasileiros com ênfase nos hidrocarbonetos aromáticos

Biodegradation of Isoprenoids, Steranes, Terpanes, and Phenanthrenes During In Situ Bioremediation of Petroleum‐Contaminated Groundwater

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