Bioremediation of soils contaminated with petroleum solid wastes and drill cuttings byPleurotussp. strains under different treatment scales

AbstractWastes from the oil industry represent one of the sources of soil pollution with the greatest environmental impact. Both drill cuttings and crude residues are delivered to the soil and produce severe toxic effects, mainly due to the presence of polycyclic aromatic hydrocarbons. Various bioremediation technologies have been implemented in order to restore the soil quality and the natural auto depuration capabilities, amongst them: composting, bioaugmentation and biostimulation. All of these bioremediation techniques promise to be eco-friendlier and cheaper alternatives than other approaches. In this work we have evaluated several strains ofPleurotussp. for their effect on the bioremediation of oil-contaminated wastes and drill cuttings disposed in storage tanks or in open-air soil lots for many years. Our results suggest that combined natural attenuation mechanism and directed fungal biodegradation activities, could be promising strategies to remediate heavily petroleum polluted soils and drilling wastes both at the laboratory and in field conditions. Furthermore, we present new data that supportingPleurotusgenera as able to degrade asphaltenes, the most recalcitrant fraction of petroleum. This study proposes an approach that at the same time can treat soils contaminated with waste from drill cuttings and bottoms of crude storage tanks.

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Different biological strategies for the bioremediation of naturally polluted soils

Plant Soil and Environment ◽

10.17221/582/2020-pse ◽

2021 ◽

Author(s):

Amin Hossein Naeim ◽

Jila Baharlouei ◽

Mitra Ataabadi

Keyword(s):

Natural Attenuation ◽

Soil Bacteria ◽

Soil Samples ◽

Important Research ◽

Polluted Soils ◽

Ring Compounds ◽

Degradation Rates ◽

Polycyclic Aromatic ◽

Marinobacter Hydrocarbonoclasticus ◽

Stimulation Of

Finding an appropriate method with the highest rate of polycyclic aromatic hydrocarbon (PAH) removal from naturally polluted soils is an important research issue. A pot factorial experiment (using contaminated soil samples from the Isfahan Refinery, Iran) was conducted in a 90-day period to compare the following bioremediation strategies: (1) natural attenuation (NA): the inherent ability of soil for bioremediation; (2) bioaugmentation (BA): inoculating soil with PAH degrading microbes Marinobacter hydrocarbonoclasticus; (3) biostimulation (BS): using N, P and K nutrients for the stimulation of bioremediating soil bacteria to achieve the C : N : P ratio of 100 : 10 : 1, and(4) bioaugmentation + biostimulation (BS + BA). Treatments NA (22.8%) and BA + BS (63.9%) resulted in the least and the highest rate of PAH removal from the soil. The 2–4 ring compounds had a significantly (P ≤ 0.05) higher rate of degradation than the 5–6 ring compounds. The highest rates were resulted by fluorene (76.41%) and acenaphthylene (72.28%) using the BA + BS treatment. However, the lowest degradation rates were resulted by indeno (1,2,3-cd) pyrene (10.05%), benzo [b] fluoranthene (10.17%), benzo (g, h, i) perylene (12.53%), and benzo [k] fluoranthene (13.67%), using NA treatment. The BA + BS treatments are the most effective method for the bioremediation of PAH polluted soils.

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Five-Year Enhanced Natural Attenuation of Historically Coal-Tar-Contaminated Soil: Analysis of Polycyclic Aromatic Hydrocarbon and Phenol Contents

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18052265 ◽

2021 ◽

Vol 18 (5) ◽

pp. 2265

Author(s):

Arkadiusz Telesiński ◽

Anna Kiepas-Kokot

Keyword(s):

Aromatic Hydrocarbons ◽

Natural Attenuation ◽

Soil Analysis ◽

Coal Tar ◽

Soil Samples ◽

Lower Intensity ◽

Sampling Points ◽

Polycyclic Aromatic ◽

Monoaromatic Hydrocarbons ◽

The Mean

The objective of this study was to assess the soil pollution on an industrial wasteland, where coal-tar was processed in the period between 1880 and 1997, and subsequent to assess the decline in the content of phenols and polycyclic aromatic hydrocarbons (PAHs) during enhanced natural attenuation. The soil of the investigated area was formed from a layer of uncompacted fill. Twelve sampling points were established in the investigated area for collecting soil samples. A study conducted in 2015 did not reveal any increase in the content of heavy metals, monoaromatic hydrocarbons (BTEX), and cyanides. However, the content of PAHs and phenols was higher than the content permitted by Polish norms in force until 2016. In the case of PAHs, it was observed for individual compounds and their total contents. Among the various methods, enhanced natural attenuation was chosen for the remediation of investigated area. Repeated analyses of the contents of phenols and PAHs were conducted in 2020. The results of the analyses showed that enhanced natural attenuation has led to efficient degradation of the simplest substances—phenol and naphthalene. The content of these compounds in 2020 was not elevated compared to the standards for industrial wastelands. The three- and four-ring hydrocarbons were degraded at a lower intensity. Based on the mean decrease in content after 5-year enhanced natural attenuation, the compounds can be arranged in the following order: phenols > naphthalene > phenanthrene > fluoranthene > benzo(a)anthracene > chrysene > anthracene.

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Plant diversity enhances the natural attenuation of polycyclic aromatic compounds (PAHs and oxygenated PAHs) in grassland soils

Soil Biology and Biochemistry ◽

10.1016/j.soilbio.2018.10.017 ◽

2019 ◽

Vol 129 ◽

pp. 60-70 ◽

Cited By ~ 16

Author(s):

Benjamin A. Musa Bandowe ◽

Sophia Leimer ◽

Hannah Meusel ◽

Andre Velescu ◽

Sigrid Dassen ◽

...

Keyword(s):

Plant Diversity ◽

Natural Attenuation ◽

Aromatic Compounds ◽

Polycyclic Aromatic Compounds ◽

Grassland Soils ◽

Polycyclic Aromatic ◽

Oxygenated Pahs

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The Most Important Methods for Depollution of Hydrocarbons Polluted Soils

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca Agriculture ◽

10.15835/buasvmcn-agr:3734 ◽

1970 ◽

Vol 66 (1) ◽

Author(s):

Laura DOBOS ◽

Carmen PUIA

Keyword(s):

Molecular Weight ◽

Polycyclic Aromatic Hydrocarbons ◽

Aromatic Hydrocarbons ◽

Heterocyclic Compounds ◽

Chemical Structure ◽

Complex Mixture ◽

Naphthenic Acids ◽

International Agency ◽

Polluted Soils ◽

Polycyclic Aromatic

Crude oil is a highly complex mixture of hydrocarbons amounting to hundreds of individual compounds with different chemical structure and molecular weight plus a series of lower molecular weight compounds other than hydrocarbons (phenols, thiols, naphthenic acids, heterocyclic compounds with N (pyridines, pyrrole, indole, s.o.) compounds S (alkyl thiols, thiophene, etc.) (Zarnea, 1994). Mineral oil and polycyclic aromatic hydrocarbons (PAHs) creates larger environmental problems. They are considered particularly dangerous. In this regard, EPA Agency from U.S.A. includes a number of polycyclic aromatic hydrocarbons under 16 priority pollutants, which require special attention. IARC (International Agency for Research on Cancer) has identified 15 types of polycyclic aromatic hydrocarbons including six of the 16 types of PAHs, identifiable by the USEPA as having carcinogenic properties (Chauhan Archana et al., 2008).

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