Polycyclic Aromatic Hydrocarbons: Sources, Toxicity, and Remediation Approaches

Frontiers in Microbiology, Journal Year: 2020, Volume and Issue: 11

Published: Nov. 5, 2020

Polycyclic aromatic hydrocarbons (PAHs) are wide-spread across the globe, mainly due to long-term anthropogenic sources of pollution. The inherent properties PAHs such as hetero-cyclic ring structures, hydrophobicity and thermostability have made them recalcitrant highly persistent in environment. PAH pollutants been determined be toxic, mutagenic, carcinogenic, teratogenic immunotoxicogenic various life forms. Therefore, this review discusses primary emissions, exposure routes their toxic effects on humans, particular. This briefly summarizes physical chemical remediation approaches membrane filtration, soil washing, adsorption, electrokinetic, thermal, oxidation photocatalytic treatments. provides a detailed systematic compilation eco-friendly biological treatment solutions for microbial using bacteria, archaea, fungi, algae co-cultures. In situ ex-situ treatments land farming, biostimulation, bioaugmentation, phytoremediation, bioreactor vermiremediation discussed detail summary factors affecting limiting bioremediation also discussed. An overview newly emerging technologies employing multi-process combinatorial newer concepts generation value-added by products during is highlighted review.

Language: Английский

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Remediation of soils and sediments polluted with polycyclic aromatic hydrocarbons: To immobilize, mobilize, or degrade?

Journal of Hazardous Materials, Journal Year: 2021, Volume and Issue: 420, P. 126534 - 126534

Published: July 2, 2021

Language: Английский

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A review on polycyclic aromatic hydrocarbons distribution in freshwater ecosystems and their toxicity to benthic fauna

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 820, P. 153282 - 153282

Published: Jan. 20, 2022

Polycyclic aromatic hydrocarbons (PAHs) are a group of organic compounds, found ubiquitously in all environmental compartments. PAHs considered hazardous pollutants, being concern to both the and human health. In aquatic environment, tend accumulate sediment due their high hydrophobicity, thus sediments can be ultimate sink. Concurrently, comprise important habitats for benthic species. This raises over toxic effects communities. Despite have been subject several reviews, toxicity freshwater species has not comprehensively discussed. review aimed provide an overview on distribution environments fauna The between overlying water column, given by sediment-water partition coefficient, revealed that concentrations were 2 4 orders magnitude higher than water. coefficient was positively correlated hydrophobicity. Toxicity addressed through Species Sensitivity Distributions. derived concentration 5% (HC5) decreased as follows: NAP (376 μg L-1) > PHE PYR FLT ANT (0.854 L-1), varying 3 magnitude. inversely hydrophobicity individual PAHs. These findings pertinent risk assessment these compounds. also identified future challenges regarding communities, namely need updating priority list importance more realistically assess combination with other stressors, chemical climate-related.

Language: Английский

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Advanced oxidation processes for the removal of mono and polycyclic aromatic hydrocarbons – A review

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 857, P. 159043 - 159043

Published: Sept. 27, 2022

Aromatic hydrocarbons (AHs) are toxic environmental contaminants presented in most of the matrices. Advanced oxidation processes (AOPs) for removal AHs account complete mineralization from various matrices have been reviewed this paper. An in-depth discussion on AOPs mono (BTEX) and polyaromatic (PAHs) their derivatives is presented. Most were effective aquatic environment. A comparative study degradation revealed that strongly dependent number aromatic rings functional groups attached to ring. The formation halogenated nitrated real contaminated water containing chloride, nitrite, nitrate ions seems be a challenge using systems. phenolic compounds, quinone, alcohols, aliphatic acids important byproducts formed during AHs, initiated by attack reactive oxygen species (ROS) electron-rich center. In conclusion, adaptable method different persulfate-based applied soil phase as an situ chemical AHs. Moreover, combination will conclusive solution avoid or minimize unexpected other intermediate products obtain rapid

Language: Английский

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Construction of microbial consortia for microbial degradation of complex compounds

Frontiers in Bioengineering and Biotechnology, Journal Year: 2022, Volume and Issue: 10

Published: Dec. 6, 2022

Increasingly complex synthetic environmental pollutants are prompting further research into bioremediation, which is one of the most economical and safest means restoration. From current research, using microbial consortia to degrade compounds more advantageous compared isolated bacteria, as former adaptable stable within growth environment can provide a suitable catalytic for each enzyme required by biodegradation pathway. With development biology gene-editing tools, artificial systems be designed efficient, stable, robust, they used produce high-value-added products with their strong degradation ability. Furthermore, shown promising in compounds. In this review, strategies constructing robust discussed. The advances also classified detailed, including plastics, petroleum, antibiotics, azo dyes, some present sewage. Thus, paper aims support helps those who focus on consortia.

Language: Английский

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Decolourization of textile effluent using native microbial consortium enriched from textile industry effluent

Journal of Hazardous Materials, Journal Year: 2020, Volume and Issue: 402, P. 123835 - 123835

Published: Sept. 3, 2020

Language: Английский

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An effort to understand and improve the anaerobic biodegradation of petroleum hydrocarbons: A literature review

International Biodeterioration & Biodegradation, Journal Year: 2020, Volume and Issue: 157, P. 105156 - 105156

Published: Dec. 10, 2020

Language: Английский

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A review on the enzymes and metabolites identified by mass spectrometry from bacteria and microalgae involved in the degradation of high molecular weight PAHs

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 797, P. 149035 - 149035

Published: July 15, 2021

Language: Английский

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Polycyclic aromatic hydrocarbon contamination in soils and sediments: Sustainable approaches for extraction and remediation

Chemosphere, Journal Year: 2021, Volume and Issue: 291, P. 132981 - 132981

Published: Nov. 23, 2021

Language: Английский

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Bioremediation of Diesel Contaminated Marine Water by Bacteria: A Review and Bibliometric Analysis

Journal of Marine Science and Engineering, Journal Year: 2021, Volume and Issue: 9(2), P. 155 - 155

Published: Feb. 3, 2021

Oil pollution can cause tremendous harm and risk to the water ecosystem organisms due relatively recalcitrant hydrocarbon compounds. The current chemical method used treat polluted with diesel is incompetent expensive for a large-scale treatment. Thus, bioremediation technique seems urgent requires more attention solve existing environmental problems. Biological agents, including microorganisms, carry out biodegradation process where organic pollutants are mineralized into water, carbon dioxide, less toxic Hydrocarbon-degrading bacteria ubiquitous in nature often exploited their specialty bioremediate oil-polluted area. capability of these utilize compounds as source main reason behind species exploitation. Recently, microbial remediation by halophilic has received many positive feedbacks an efficient pollutant degrader. These also considered suitable candidates hypersaline environments. However, only few have been isolated limited available information on bacteria. fundamental aspect successful includes selecting appropriate microbes high degradation. Therefore, salinity remarkable This paper provides updated overview degradation, effects oil spills environment living organisms, potential role decontaminate environment.

Language: Английский

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