Aerobic bacterial degradation of polycyclic aromatic hydrocarbons (PAHs) and its kinetic aspects

Baboshin, M. A.; Golovleva, L. A.

doi:10.1134/s0026261712060021

Cited by 60 publications

(24 citation statements)

References 127 publications

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“…Quantification of C 21 -C 25 and C 26 -C 30 n-alkanes showed high dispersion, and no significant (P Ͻ 0.05) differences were observed among the C1, E1, and E2 microcosms (not shown). Hydrocarbon hydrophobicity is proportional to molecule size, and larger hydrocarbons tend to be more tightly adsorbed to soil particles (58). Nonetheless, the high dispersion of ϾC 20 n-alkanes could not be explained by tighter adsorption to soil due to high extraction efficiencies (100%) for all n-alkanes (data not shown).…”

Section: Fig 2 Effect Of Diesel Pollution and Bioremediation Treatmenmentioning

confidence: 93%

From Rare to Dominant: a Fine-Tuned Soil Bacterial Bloom during Petroleum Hydrocarbon Bioremediation

Fuentes

Barra

Caporaso

et al. 2016

Appl Environ Microbiol

116

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Hydrocarbons are worldwide-distributed pollutants that disturb various ecosystems. The aim of this study was to characterize the short-lapse dynamics of soil microbial communities in response to hydrocarbon pollution and different bioremediation treatments. Replicate diesel-spiked soil microcosms were inoculated with either a defined bacterial consortium or a hydrocarbonoclastic bacterial enrichment and incubated for 12 weeks. The microbial community dynamics was followed weekly in microcosms using Illumina 16S rRNA gene sequencing. Both the bacterial consortium and enrichment enhanced hydrocarbon degradation in diesel-polluted soils. A pronounced and rapid bloom of a native gammaproteobacterium was observed in all dieselpolluted soils. A unique operational taxonomic unit (OTU) related to the Alkanindiges genus represented ϳ0.1% of the sequences in the original community but surprisingly reached >60% after 6 weeks. Despite this Alkanindiges-related bloom, inoculated strains were maintained in the community and may explain the differences in hydrocarbon degradation. This study shows the detailed dynamics of a soil bacterial bloom in response to hydrocarbon pollution, resembling microbial blooms observed in marine environments. Rare community members presumably act as a reservoir of ecological functions in high-diversity environments, such as soils. This rare-to-dominant bacterial shift illustrates the potential role of a rare biosphere facing drastic environmental disturbances. Additionally, it supports the concept of "conditionally rare taxa," in which rareness is a temporary state conditioned by environmental constraints.

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Section: Fig 2 Effect Of Diesel Pollution and Bioremediation Treatmenmentioning

confidence: 93%

From Rare to Dominant: a Fine-Tuned Soil Bacterial Bloom during Petroleum Hydrocarbon Bioremediation

Fuentes

Barra

Caporaso

et al. 2016

Appl Environ Microbiol

116

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“…Their presence in the environment is mainly due to the waste discharged from industrialized and urbanized areas, coal tar pavement, off-shore petroleum hydrocarbon production or petroleum transportation (Froehner et al 2012a). Several methods are available for PAHs treatment, such as aerobic degradation (Baboshin and Golovleva 2012), anaerobic degradation (Zhang et al 2012), ultrasonic degradation (Bremner et al 2011), electroremediation (Pazos et al 2010), and surfactant assisted soil washing (Dermont et al 2000;Jafvert 1996). The PAHs biodegradation is carried out by bacteria, fungi, and plants (Baboshin and Golovleva 2012).…”

Section: Introductionmentioning

confidence: 99%

Urban wastes to remediate industrial sites: a case of polycyclic aromatic hydrocarbons contamination and a new process

Montoneri

Tomasso

Colajanni

et al. 2013

Int. J. Environ. Sci. Technol.

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The objective of the present paper was to investigate the potential of urban wastes derived soluble bioorganic substances (SBO) to perform as auxiliaries for enhanced washing of urban soil contaminated by industrial activities. The second objective was to show how the SBO could be used for remediating the environmental impact caused by industrial activities and, at the same time, be compatible with the real-world situation demanding zero waste processes. The SBO, isolated from four urban biowastes, were characterized for their lipophilic/hydrophilic (LH) and aliphatic/aromatic C ratios, and for their surface activity properties. Soil, containing about 0.45 % w/w polycyclic aromatic hydrocarbons (PAHs), was sampled from a dismissed coal gasification site. The efficiency of the SBO for washing the contaminated soil was investigated. The most lipophilic SBO, in spite of the highest surface activity, was the least efficient. The products having lower LH, poorer surface activity, but higher concentration of aromatic C were more efficient. All SBO allowed developing a two steps process. This comprised soil washing, and the recovery and chemical treatment of the washing solution, to yield a PAHs-SBO precipitate and the clean water phase to recycle to further soil washing. Data were obtained under the same experimental conditions using Triton X-100 commercial surfactant. The results indicated that, although the commercial surfactant is the most efficient in the soil washing step, it does not allow removal of PAHs from the recovered washing solution. On the contrary, 95-99 % PAHs removal from the recovered SBO washing solutions is attained.

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“…Two of the nine oxy-PAHs analyzed were also identified in this unleached sample: 9-fluorenone 0.14 mg/kg (DS), a degradation product of fluorene, and 9,10-anthraquinone 0.15 mg/kg (DS), a degradation product of anthracene, indicating that PAH oxidation may occur during storage of the spiked soil sample. This could occur, e.g., because of aerobic bacterial degradation [15] or biocatalytic activity of fungi in the soil [16]. However, it cannot be ruled out that oxy-PAHs were already present in the original samples.…”

Section: Pahs and Oxy-pahs Contentmentioning

confidence: 99%

“…Creosote contains high concentrations of polycyclic aromatic hydrocarbons (PAHs) that are known to be toxic, mutagenic and carcinogenic. In contaminated sites, the PAHs are degraded to oxygenated PAHs (oxy-PAHs) through chemical oxidation [13], photo oxidation [14] or biological transformation [15]. The oxy-PAHs are of great interest because they are persistent, highly toxic to both humans and the environment and more water-soluble than their corresponding PAHs [16].…”

Section: Introductionmentioning

confidence: 99%

Copper Recovery from Polluted Soils Using Acidic Washing and Bioelectrochemical Systems

Fedje

Modin

Strömvall

2015

Metals

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Abstract:Excavation followed by landfilling is the most common method for treating soils contaminated by metals. However, as this solution is not sustainable, alternative techniques are required. Chemical soil washing is one such alternative. The aim of this experimental lab-scale study is to develop a remediation and metal recovery method for Cu contaminated sites. The method is based on the washing of soil or ash (combusted soil/bark) with acidic waste liquids followed by electrolytic Cu recovery by means of bioelectrochemical systems (BES). The results demonstrate that a one-or two-step acidic leaching process followed by water washing removes >80 wt. % of the Cu. Copper with 99.7-99.9 wt. % purity was recovered from the acidic leachates using BES. In all experiments, electrical power was generated during the reduction of Cu. This clearly indicates that Cu can also be recovered from dilute solutions. Additionally, the method has the potential to wash co-pollutants such as polycyclic aromatic hydrocarbons (PAHs) and oxy-PAHs.

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Aerobic bacterial degradation of polycyclic aromatic hydrocarbons (PAHs) and its kinetic aspects

Cited by 60 publications

References 127 publications

From Rare to Dominant: a Fine-Tuned Soil Bacterial Bloom during Petroleum Hydrocarbon Bioremediation

From Rare to Dominant: a Fine-Tuned Soil Bacterial Bloom during Petroleum Hydrocarbon Bioremediation

Urban wastes to remediate industrial sites: a case of polycyclic aromatic hydrocarbons contamination and a new process

Copper Recovery from Polluted Soils Using Acidic Washing and Bioelectrochemical Systems

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