Frequency of genes in aromatic and aliphatic hydrocarbon biodegradation pathways within bacterial populations from Alaskan sediments

A significant proportion of the naturally occurring hydrocarbon-degrading populations within Alaskan sediments affected by the Exxon Valdez oil spill had both the xylE and alkB genes and could convert hexadecane and naphthalene to carbon dioxide; a greater proportion of the population had xylE than had alkB, reflecting the composition of the residual oil at the time of sampling; nearly equal populations with xylE alone, alkB alone, and xylE + alkB genes together were found after exposure to fresh crude oil; populations with xylE lacking alkB increased after enrichment on naphthalene. Thus, the genotypes of hydrocarbon-degrading populations reflected the composition of the hydrocarbons to which they were exposed.Key words: hydrocarbon biodegradation, aromatic hydrocarbon biodegradation, aliphatic hydrocarbon biodegradation, alkB, xylE.

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Faculty Opinions recommendation of Microbial dioxygenase gene population shifts during polycyclic aromatic hydrocarbon biodegradation.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.1001940.375084 ◽

2006 ◽

Author(s):

Peter Williams

Keyword(s):

Polycyclic Aromatic Hydrocarbon ◽

Aromatic Hydrocarbon ◽

Hydrocarbon Biodegradation ◽

Polycyclic Aromatic ◽

Dioxygenase Gene

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Saturated carbon dioxide nanofluids enhanced oil recovery in carbonate reservoir cores using nuclear magnetic resonance

10.5194/egusphere-egu21-6762 ◽

2021 ◽

Author(s):

Yongsheng Tan ◽

Qi Li ◽

Liang Xu ◽

Xiaoyan Zhang ◽

Tao Yu

Keyword(s):

Carbon Dioxide ◽

Nuclear Magnetic Resonance ◽

Magnetic Resonance ◽

Enhanced Oil Recovery ◽

Oil Recovery ◽

Carbonate Reservoir ◽

Carbonate Reservoirs ◽

Residual Oil ◽

Core Flooding ◽

Nuclear Magnetic

The wettability, fingering effect and strong heterogeneity of carbonate reservoirs lead to low oil recovery. However, carbon dioxide (CO2) displacement is an effective method to improve oil recovery for carbonate reservoirs. Saturated CO2 nanofluids combines the advantages of CO2 and nanofluids, which can change the reservoir wettability and improve the sweep area to achieve the purpose of enhanced oil recovery (EOR), so it is a promising technique in petroleum industry. In this study, comparative experiments of CO2 flooding and saturated CO2 nanofluids flooding were carried out in carbonate reservoir cores. The nuclear magnetic resonance (NMR) instrument was used to clarify oil distribution during core flooding processes. For the CO2 displacement experiment, the results show that viscous fingering and channeling are obvious during CO2 flooding, the oil is mainly produced from the big pores, and the residual oil is trapped in the small pores. For the saturated CO2 nanofluids displacement experiment, the results show that saturated CO2 nanofluids inhibit CO2 channeling and fingering, the oil is produced from the big pores and small pores, the residual oil is still trapped in the small pores, but the NMR signal intensity of the residual oil is significantly reduced. The final oil recovery of saturated CO2 nanofluids displacement is higher than that of CO2 displacement. This study provides a significant reference for EOR in carbonate reservoirs. Meanwhile, it promotes the application of nanofluids in energy exploitation and CO2 utilization.

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Assessment of polycyclic aromatic hydrocarbon exposure in the waters of Prince William Sound after the Exxon Valdez oil spill: 1989–2005

Marine Pollution Bulletin ◽

10.1016/j.marpolbul.2006.11.025 ◽

2007 ◽

Vol 54 (3) ◽

pp. 339-356 ◽

Cited By ~ 53

Author(s):

Paul D. Boehm ◽

Jerry M. Neff ◽

David S. Page

Keyword(s):

Polycyclic Aromatic Hydrocarbon ◽

Aromatic Hydrocarbon ◽

Oil Spill ◽

Prince William Sound ◽

Exxon Valdez ◽

Exxon Valdez Oil Spill ◽

Polycyclic Aromatic

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Phase behavior of ternary mixtures {aliphatic hydrocarbon+aromatic hydrocarbon+ionic liquid}: Experimental LLE data and their modeling by COSMO-RS

The Journal of Chemical Thermodynamics ◽

10.1016/j.jct.2013.11.020 ◽

2014 ◽

Vol 77 ◽

pp. 222-229 ◽

Cited By ~ 22

Author(s):

Irene Domínguez ◽

Emilio J. González ◽

José Palomar ◽

Ángeles Domínguez

Keyword(s):

Ionic Liquid ◽

Aromatic Hydrocarbon ◽

Phase Behavior ◽

Aliphatic Hydrocarbon ◽

Ternary Mixtures ◽

Lle Data

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Adsorption of carbon dioxide on naturally occurring solid amino acids

Journal of Environmental Chemical Engineering ◽

10.1016/j.jece.2016.06.007 ◽

2016 ◽

Vol 4 (3) ◽

pp. 3170-3176 ◽

Cited By ~ 8

Author(s):

Sreedipta Chatterjee ◽

Sadhana Rayalu ◽

Spas D. Kolev ◽

Reddithota J. Krupadam

Keyword(s):

Carbon Dioxide ◽

Amino Acids ◽

Naturally Occurring

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Supercritical carbon dioxide extraction of the residual oil from palm kernel cake

Journal of Food Engineering ◽

10.1016/j.jfoodeng.2011.06.033 ◽

2012 ◽

Vol 108 (1) ◽

pp. 166-170 ◽

Cited By ~ 16

Author(s):

Nik Norulaini Ab Rahman ◽

Sawsan S. Al-Rawi ◽

Ahmad H. Ibrahim ◽

Moftah M. Ben Nama ◽

Mohd Omar Ab Kadir

Keyword(s):

Carbon Dioxide ◽

Supercritical Carbon Dioxide ◽

Palm Kernel ◽

Supercritical Carbon Dioxide Extraction ◽

Palm Kernel Cake ◽

Residual Oil ◽

Carbon Dioxide Extraction ◽

Supercritical Carbon

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Naturally Occurring α-Amino Acid Catalyzed Coupling of Carbon Dioxide with Epoxides to Afford Cyclic Carbonates.

ChemInform ◽

10.1002/chin.200723110 ◽

2007 ◽

Vol 38 (23) ◽

Author(s):

Chaorong Qi ◽

Huanfeng Jiang ◽

Zhaoyang Wang ◽

Bo Zou ◽

Shaorong Yang

Keyword(s):

Carbon Dioxide ◽

Amino Acid ◽

Cyclic Carbonates ◽

Naturally Occurring ◽

Acid Catalyzed

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Oil Spill Simulations and Susceptibility in Coastal and Estuarine Areas

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.396.109 ◽

2019 ◽

Vol 396 ◽

pp. 109-120 ◽

Cited By ~ 2

Author(s):

Caroline Barbosa Monteiro ◽

Phelype Haron Oleinik ◽

Bruno Vasconcellos Lopes ◽

Thalita Fagundes Leal ◽

Osmar Olinto Möller Junior ◽

...

Keyword(s):

Oil Spill ◽

Oil Spills ◽

Diesel Oil ◽

Hydrodynamic Conditions ◽

Residual Oil ◽

Coastal Zones ◽

Mass Losses ◽

Estuarine Region ◽

Modelling System ◽

Oil Particles

A modelling system was utilised to simulate the movement and behaviour of oil slicks for two types of hydrocarbons, a diesel and another residual, considering hydrodynamic variations. Susceptible areas to oil touching were found in adjacent regions of two vessel manoeuvring zones, in two types of zones, one in a marine coastal and another in an estuarine environment. The evaporation rates were calculated for an estimate of the mass losses. For the maritime zone, the oil particles reached the vicinity of the beaches in approximately 4 to 8 hours after the beginning of the spill simulations, while for the estuary in approximately 1 hour. For the scenarios with diesel oil, mass losses oscillated between 13 to 16% in the estuarine region, and between 23 and 29% in the marine coastal zones. The evaporation rates for scenarios with residual oil, between 2 and 5%, were considerably lower than for diesel (15 and 22%), especially for spills simulated in the estuarine region, where the oil particles reached the lagoon banks after 1 hour. Mass losses by evaporation were more intense in marine coastal areas than for oil spills simulated in estuarine regions, possibly due to the more intense hydrodynamic conditions and the longer time that the oil needs to reach the coast. The fluctuations of observed environmental conditions justify the need for a robust number of simulations for reducing the uncertainties related to the oceanographic and meteorological variability that affect oil spill movement.

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