Control of BTEX migration by intrinsic bioremediation at a gasoline spill site

Kao, Chih‐Ming; Wang, C.C.

doi:10.1016/s0043-1354(00)00070-1

Cited by 59 publications

(23 citation statements)

References 9 publications

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“…The BTEX are stable aromatic hydrocarbons and represent major components of gasoline constituents. The BTEX are also volatile compounds and tend to be more water soluble than other components of gasoline such as alkanes and polyaromatic hydrocarbons (Applegate et al, 1998;Kao and Wang, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…It can also be release into the environment due to crude oil spillages during transportation, loading and storage as well as from deliberate oil waste disposal from petroleum refining operations and petrochemical manufacturing industries, from runoff from roads and from water discharge from offshore and onshore oil installations. As a consequence of these various activities and processes, the accumulation of xylene in soil and ground water can pose a tremendous threat to the soil and ground water resources (Kao and Wang, 2000;Kandyala et al, 2010;Das and Chandran, 2011;Atlas and Hazen, 2011;Alrumman et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Monitoring and removing xylene from the environment has been viewed as a high priority around the world (Kao and Wang, 2000;Andreoni and Gianfreda, 2007;Kandyala et al, 2010;Das and Chandran, 2011;Atlas and Hazen, 2011). Physical, chemical and biological approaches can be used to remove xylene and other petroleum hydrocarbons from contaminated sites.…”

Section: Introductionmentioning

confidence: 99%

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Screening and Characterization of Aerobic Xylene-Degrading Bacteria from Gasoline Contaminated Soil Sites Around Gas Stations in Northern Jordan

Irshaid¹,

Jacob²

2015

J. of Biological Sciences

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A B S T R A C T Xylene is frequently released into the environment from biomass. As a consequence of this, its bioaccumulation can cause adverse health effects in humans. The purpose of this study was to screen for aerobic xylene-degrading bacteria from gasoline contaminated soil sites located around gas stations in the city of Al-Mafraq, Jordan. The effects of some physicochemical factors were examined. The 10 g of soil sample were transferred to Stanier's mineral medium supplemented with 1% m-xylene and incubated at 30°C for 72 h. At least 4 aerobic m-xylene degrading isolates, designated as X1-X4 were identified using biochemical and molecular biology techniques. Isolates X1 and X2 were rod-shape Gram negative, oxidase and catalase positive bacteria. Isolate X3 was a rod-shape and Gram negative bacterium that was catalase positive and oxidase negative. Isolate X4 was a rod-shape, spore forming and Gram positive bacterium that was oxidase and catalase positive. Isolates X1, X2 and X4 showed high similarity to Pseudomonas aeruginosa, Pseudomonas stutzeri and Bacillus firmus, respectively, whereas X3 was a novel species of the genus Citrobacter, similar to Citrobacter amalonaticus. The growth rates of these isolates were slower at 2% m-xylene than at 1% m-xylene. The growth rate was less when the temperature was reduced from 30-25°C, whereas, at 45°C, the growth rate almost completely ceased. The growth rate was higher at pH 6.5 than at pH 5.5 or 8.5. The shortest generation times were found to be 8 h for Bacillus firmus, followed by 9 h for Pseudomonas stutzeri, 10 h for Citrobacter amalonaticus and 11 h for Pseudomonas aeruginosa under 1% m-xylene at 30°C and pH 6.8. In conclusion, we reported for the first time the isolation of four bacterial species with the ability to utilize m-xylene as a growth substrate.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Screening and Characterization of Aerobic Xylene-Degrading Bacteria from Gasoline Contaminated Soil Sites Around Gas Stations in Northern Jordan

Irshaid¹,

Jacob²

2015

J. of Biological Sciences

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“…Many bioremediation methods use microorganisms to remove or convert the contaminants into less toxic components. Organisms like bacteria, fungi, and microalgae have been used in many bioremediation procedures (Kao & Wang, 2000).…”

Section: Introductionmentioning

confidence: 99%

Nannochloropsis Oculata Growth in Produced Water: An Alternative for Massive Microalgae Biomass Production

Arriada¹,

Abreu²

2014

BJPG

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Produced water (PW), extracted as a petroleum byproduct, presents high contents of impurities and, therefore, must be treated before being released into the environment. This clean-up process increases oil production costs. Microalgae are photosynthetic microorganisms that can produce biofuels and treat effluents. This work tested the viability of growing marine microalgae species in culture medium with PW. In the first experiment, the marine microalgae Nannochloropsis oculata was inoculated in culture media containing different concentrations (0, 50, and 100%) of PW. In the second experiment, the N. oculata adapted to grow in PW was re-inoculated into media with different proportions of this effluent (0, 50, and 100%) to evaluate a possible adaptation. N. oculata presented significant growth in diluted and pure PW. However, pre-adaptation did not result in higher biomass production. These results indicate that N. oculata can grow in this effluent and generate bio-products.

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“…Due to anoxic conditions typically found in organic contaminant plumes (3), anaerobic degradation of aromatic compounds plays a major role for bioremediation processes, and increased knowledge on the anaerobic oxidation of aromatic compounds has been acquired recently (8,10,29,34,36). Besides the reduction of soluble electron acceptors such as oxygen, nitrate, and sulfate, iron(III) reduction is thought to play a major role for the reduction of aromatic hydrocarbons at contaminated sites (13,16). Biodegradation of benzene, toluene, ethylbenzene, and xylene (BTEX) compounds in the field under iron-reducing conditions in situ could be shown (11,12,25).…”

mentioning

confidence: 99%

Anaerobic Degradation of Benzene, Toluene, Ethylbenzene, and o -Xylene in Sediment-Free Iron-Reducing Enrichment Cultures

Jahn

Haderlein

Meckenstock

2005

Appl Environ Microbiol

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Monoaromatic hydrocarbons such as benzene, toluene, ethylbenzene, and xylene (BTEX) are widespread contaminants in groundwater. We examined the anaerobic degradation of BTEX compounds with amorphous ferric oxide as electron acceptor. Successful enrichment cultures were obtained for all BTEX substrates both in the presence and absence of AQDS (9,10-anthraquinone-2,6-disulfonic acid). The electron balances showed a complete anaerobic oxidation of the aromatic compounds to CO 2 . This is the first report on the anaerobic degradation of o-xylene and ethylbenzene in sediment-free iron-reducing enrichment cultures.

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Control of BTEX migration by intrinsic bioremediation at a gasoline spill site

Cited by 59 publications

References 9 publications

Screening and Characterization of Aerobic Xylene-Degrading Bacteria from Gasoline Contaminated Soil Sites Around Gas Stations in Northern Jordan

Screening and Characterization of Aerobic Xylene-Degrading Bacteria from Gasoline Contaminated Soil Sites Around Gas Stations in Northern Jordan

Nannochloropsis Oculata Growth in Produced Water: An Alternative for Massive Microalgae Biomass Production

Anaerobic Degradation of Benzene, Toluene, Ethylbenzene, and o -Xylene in Sediment-Free Iron-Reducing Enrichment Cultures

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