Recent trends in polycyclic aromatic hydrocarbons pollution distribution and counteracting bio-remediation strategies

Chemosphere, Journal Year: 2023, Volume and Issue: 337, P. 139396 - 139396

Published: July 3, 2023

Language: Английский

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Dynamic responses in Pseudomonas stutzeri M3 bioaugmentation of crude-oil-contaminated soil: Hydrocarbons, microbial community structures, and functional genes

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(1), P. 111863 - 111863

Published: Jan. 4, 2024

Language: Английский

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Oily Sludge Bioremediation and Simultaneous Production of Polyhydroxyalkanoate by Novel Hydrocarbon Degrading Bacterial Consortium

Waste and Biomass Valorization, Journal Year: 2025, Volume and Issue: unknown

Published: March 16, 2025

Language: Английский

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Effect of different composts on the dynamic of soil organic pollutants, microbial network interactions and multifunctionality in an urban garden made from a former brownfield

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 380, P. 124951 - 124951

Published: March 17, 2025

Brownfield requalification in urban areas can enable their ecological reclamation by improving ecosystem services. In this perspective, transformation into farms is underexplored due to the potential risks associated with pollutants transfer vegetables and low soil functionality. The current study aims improve quality based on principles of circular economy assess organic produced an farm built from a former brownfield. For purpose, locally available composts made manure, leaves fragmented rameal wood (FRW) were applied plot brownfield being converted garden Roubaix (France). Thereafter, mixed (carrot, onion, radish, zucchini, potato, chard) cultivated for six months. After harvest, microbial communities studied using metabarcoding 16S RNA gene ITS region, along dynamic (petroleum hydrocarbons, dioxins/furans) soils vegetables. Globally, our results showed that concentrations these similar those originating non-contaminated soils. Compost applications shaped composition bacterial improved total metabolic activity richness. Furthermore, amendment manure FRW proportion positive interactions between fungal communities, suggesting more bacteria-fungi facilitation SOM decomposition nutrient recycling. Consistently, calculated service metrics index (T_SQI) higher efficiency compost, demonstrating relationship network characteristics functioning.

Language: Английский

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Environmental DNA-Based Ecological Risk Assessment of PAHs in Aged Petroleum-Contaminated Soils

Toxics, Journal Year: 2025, Volume and Issue: 13(5), P. 357 - 357

Published: April 29, 2025

(1) Background: Polycyclic aromatic hydrocarbons (PAHs) are important components of petroleum and pose a serious threat to the soil environment oil production well sites. Therefore, scientific risk thresholds ecological assessment methods must be established for PAHs in petroleum-contaminated soils. (2) Methods: In this study, based on environmental DNA (eDNA) method, bacterial community was considered as receptor assess risks PAH contamination aged petroleum-polluted A combination quotient equivalent toxicity factor used PAHs. (3) Results: dose-response curve plotted determine 50% effective concentration (EC50) total 16 (∑TEQBaP) Following plot species sensitivity distribution (SSD) curve, hazardous protecting 95% values (HC5) (TPHs), electrical conductivity (EC), were calculated 892.1 μs·cm-1, 149.9 mg·kg-1, 0.2601 respectively. The regression models (DF) aging (AF) defined DF = -1.132 SOM + 0.033PAHs 9.968 AF 242.518 1256.029 lgpH 0.024 EC - 1415.447. calibrations AF, value HC5 determined 0.1956 which could threshold calibrated data consistent with that normal cumulative probability model. results showed soils high-risk levels communities exposed (4) Conclusions: This study provides reference deriving pollutants explores alternative at specific

Language: Английский

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Environmental restoration of polyaromatic hydrocarbon-contaminated soil through sustainable rhizoremediation: insights into bioeconomy and high-throughput systematic analysis

Environmental Science Advances, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Rhizoremediation is a nature-based solution for PAH remediation. Metagenomics reveals microbial communities and genes involved. Expanding its market potential can drive sustainable bioremediation.

Language: Английский

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Bacterial Community Dynamics in Oil-Contaminated Soils in the Hyper-Arid Arava Valley

Agronomy, Journal Year: 2025, Volume and Issue: 15(5), P. 1198 - 1198

Published: May 15, 2025

Petroleum pollution has become a substantial challenge in soil ecology. The bacterial consortia play major role the biodegradation of petroleum hydrocarbons. main objective this study was to assess changes composition and diversity oil-contaminated dryland soils. Illumina MiSeq high-throughput sequencing technique used structural change hyper-arid Arava Valley Israel. abundance bacteria declined significantly following oil pollution. dominant phyla petroleum-contaminated soils were Proteobacteria (~33% higher vs. control soil) Patescibacteria (~2.5% soil), which are oil-associated hydrocarbon-degrading bacteria. An opposite trend found for Actinobacteria (~8%), Chloroflexi (12%), Gemmatimonadetes (3%), Planctomycetes (2%) phyla, with lower abundances contaminated soil. Investigation long-term sites revealed significant genus-level taxonomic restructuring communities. most evident observed Mycobacterium, Alkanindiges, uncultured bacterium-145, showed marked shifts between spill across decades. Particularly, genera such as Pseudoxanthomonas demonstrated persistent dominance sites. While some (e.g., Frigoribacterium, Leifsonia) over time, others—particularly Nocardioides Streptomyces—exhibited increases by 2014, suggesting potential ecological succession or adaptive selection. Minor but consistent also detected stress-tolerant like Blastococcus Quadrisphaera. effect contamination on species greater at 1975 site compared 2014 site. These patterns highlight dynamic response communities chronic contamination, implications bioremediation ecosystem recovery. results provide new insights into contamination-induced community may assist designing appropriate strategies alleviate impacts drylands.

Language: Английский

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Impact of artisanal refining activities on bacterial diversity in a Niger Delta fallow land

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Feb. 16, 2024

Abstract Hydrocarbon pollution is a major ecological problem facing oil-producing countries, especially in the Niger Delta region of Nigeria. In this study, site that had been previously polluted by artisanal refining activity was investigated using 16S rRNA Illumina high-throughput sequencing technology and bioinformatics tools. These were used to investigate bacterial diversity soil with varying degrees contamination, determined gas chromatography-flame ionization detector (GC-FID). Soil samples collected from heavily (HP), mildly (MP), unpolluted (control sample, CS) portion study site. DNA extracted Zymo Research (ZR) Fungi/Bacteria MiniPrep kit, followed PCR amplification agarose gel electrophoresis. The microbiome characterized based on V3 V4 hypervariable regions gene. QIIME (Quantitative Insights Into Microbial Ecology) 2 software analyse sequence data. final data set covered 20,640 demultiplexed high-quality reads total 160 filtered OTUs. Proteobacteria dominated HP CS, while Actinobacteria sample MP. Denitratisoma , Pseudorhodoplanes Spirilospora leading genera HP, MP respectively. Diversity analysis indicated CS [with 25.98 ppm petroleum hydrocarbon (TPH)] more diverse than (with 490,630 TPH) 5398 TPH). A functional prediction revealed six modules dataset, metabolism covering up 70%, 11 metabolic pathways. This demonstrates higher concentration adversely impacts microbial diversity, creating narrow hydrocarbon-degrading species, addition obvious land ecosystem degradation caused activities. Overall, business significantly driving services losses Delta, which calls for urgent intervention, focus bioremediation.

Language: Английский

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Exploring the Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Production Potential of Total Petroleum Hydrocarbon Degrading Bacteria Using Oily Sludge Waste as Feedstock

ACS ES&T Engineering, Journal Year: 2024, Volume and Issue: 4(7), P. 1622 - 1634

Published: June 13, 2024

Though bioremediation of hazardous petroleum refinery waste (oily sludge) has been practiced for the last few decades, present study proposes to obtain polyhydroxyalkanoate (PHA)-based bioplastic polymer from it as a valuable byproduct parallel its treatment. In study, nine fast-growing and sodium benzoate degrading bacterial strains belonging genera Achromobacter, Pseudomonas, Acinetobacter, Ochrobactrum, Pannonibacter were found be PHA-positive. The screened cultures showed total hydrocarbon (TPH) degradation in range 31% 91% 1% oily sludge containing medium could accumulate PHA 50% 92%. Fourier Transform Infrared (FTIR) interferogram extracted represented PHA-related functional groups, while proton nuclear magnetic resonance (HNMR) spectra chemical shifts corresponding −CH3 3HB (0.88 ppm) 3HV (1.5 monomers, thus confirming poly(3-hydroxybutyrate-co-3-hydroxyvalerate) or P(3HB-co-3HV). thermal features P(3HB-co-3HV) such low melting temperature (Tm) % crystallinity (%Xc) are industrially more significant. Ochrobactrum ciceri strain AWIS01 was most efficient organism, showing 0.720 g/L production 90.06% TPH when provided sole source carbon. future, bacteria can used produce sludge.

Language: Английский

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Study on the mechanism and recoverability of magnetically enhanced ionic liquid microemulsion for oily sludge treatment

Geoenergy Science and Engineering, Journal Year: 2023, Volume and Issue: 232, P. 212445 - 212445

Published: Oct. 26, 2023

Language: Английский

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