Bioremediation and monitoring of aromatic-polluted habitats

Andreoni, V.; Gianfreda, Liliana

doi:10.1007/s00253-007-1018-5

Cited by 177 publications

(113 citation statements)

References 130 publications

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“…It can enter surface water, ground water and soil through natural seeps and accidental oil spills from underground crude oil tanks or gasoline pipelines, wells and other accidental spills (Uchida et al, 1993;Otenio et al, 2005;Vieira et al, 2007;Andreoni and Gianfreda, 2007;Kandyala et al, 2010;Atlas and Hazen, 2011;Alrumman et al, 2015). 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.…”

Section: Introductionmentioning

confidence: 99%

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%

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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“…The potential of in situ microbiota to degrade a given substrate can be demonstrated, for example, by the detection of genes encoding key catabolic enzymes (Galvao et al, 2005;Andreoni and Gianfreda, 2007). Accordingly, microbes potentially involved in on-site toluene degradation can be detected using the genes of benzylsuccinate synthase (Bss), the key enzyme of anaerobic toluene degradation (Boll et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

DNA-SIP identifies sulfate-reducing Clostridia as important toluene degraders in tar-oil-contaminated aquifer sediment

et al. 2010

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Global groundwater resources are constantly challenged by a multitude of contaminants such as aromatic hydrocarbons. Especially in anaerobic habitats, a large diversity of unrecognized microbial populations may be responsible for their degradation. Still, our present understanding of the respective microbiota and their ecophysiology is almost exclusively based on a small number of cultured organisms, mostly within the Proteobacteria. Here, by DNA-based stable isotope probing (SIP), we directly identified the most active sulfate-reducing toluene degraders in a diverse sedimentary microbial community originating from a tar-oil-contaminated aquifer at a former coal gasification plant. On incubation of fresh sediments with 13 C 7 -toluene, the production of both sulfide and 13 CO 2 was clearly coupled to the 13 C-labeling of DNA of microbes related to Desulfosporosinus spp. within the Peptococcaceae (Clostridia). The screening of labeled DNA fractions also suggested a novel benzylsuccinate synthase alpha-subunit (bssA) sequence type previously only detected in the environment to be tentatively affiliated with these degraders. However, carbon flow from the contaminant into degrader DNA was only B50%, pointing toward high ratios of heterotrophic CO 2 -fixation during assimilation of acetyl-CoA originating from the contaminant by these degraders. These findings demonstrate that the importance of non-proteobacterial populations in anaerobic aromatics degradation, as well as their specific ecophysiology in the subsurface may still be largely ungrasped.

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“…Many different studies in the fields of heavy metals pollution [26][27][28][29][30][31][32] have covered topics such as:…”

Section: Advances In Bioremediation and Phytoremediationmentioning

confidence: 99%

The Pollution of Water by Trace Elements Research Trends

Alakeel¹

2018

Advances in Bioremediation and Phytoremediation

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Water pollution has been a growing issue for the last decades. This is mainly because of the boost in human population, and the motivations that lead to technological advances for the welfare of the society. Water pollution originates from different sources such as agricultural, municipal, industrial, and landfills drainage waters. These pollutants, which are either organic, nutrient, or heavy metals pollutants, are very deleterious to the natural ecosystems and eventually harmful to humans. Different procedures have been proposed for handling heavy metals water pollution, which encompass electro-osmosis, ion exchange, electrokinetic, sludge activation, as well as phytoextraction. Water contaminants are also removed using flotation, membrane filtration, aeration, precipitation, coagulation-flocculation, ion exchange, and electrochemical treatment. These procedures are costly and have prompted the use of other techniques, such as phytoremediation. Phytoremediation involves the utilization of plant species to alleviate the impacts of environmental pollution. It could be implemented to eliminate pollutants from various natural ecosystems including water, soil, and air or to develop new vegetation growth on disturbed or barren ground. Different plant species have been used for phytoremediation. This chapter addresses trace elements pollution of natural water resources in details and the abilities of Aquatic plant communities such as Reed plants (Phragmites australis) to absorb soluble trace elements from water.

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Bioremediation and monitoring of aromatic-polluted habitats

Cited by 177 publications

References 130 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

DNA-SIP identifies sulfate-reducing Clostridia as important toluene degraders in tar-oil-contaminated aquifer sediment

The Pollution of Water by Trace Elements Research Trends

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