Microbiology Resource Announcements, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 19, 2024
Draft genomes of two phenanthrene-degrading bacterial isolates from oil sands process-affected water (OSPW) in Alberta, Canada were sequenced. Both grew close association on agar plates and difficult to obtain axenically. They represent novel
Language: Английский
Water Environment Research, Journal Year: 2025, Volume and Issue: 97(3)
Published: Feb. 27, 2025
Abstract Oil sands process‐affected water (OSPW) is a by‐product of bitumen extraction from oil surface mining in Alberta, Canada. A major group organics OSPW known as naphthenic acid fraction compounds (NAFCs) are concern due to their persistence and toxicity. Constructed wetland treatment systems have emerged potential biological approaches for reducing NAFC concentrations within OSPW. In this study, greenhouse‐scale mesocosms simulating constructed consisting coarse sand tailings (CST) were used evaluate the ability Scirpus microcarpus , Triglochin maritima unplanted controls attenuate NAFCs under spring/fall summer temperatures (10°C/5°C 20°C/10°C day/night). Overall, mesocosm system, attenuation was similar regardless different design parameters such plant type, presence, temperature. By end 30% 50% lower than initial depending on species, The relative abundance acutely toxic O 2 ‐NAFCs decreased over time, with an increase less 3 4 SO classes. Various hydrocarbon‐degrading microbial families Comamonadaceae Xanthobacteraceae found be dominant OSPW, while cyanobacteria ( Trichormus ) enriched CST. Principal component analysis indicated that only time led distinct clusters composition, temperature, influenced communities. Shifts communities corresponded shifts NAFCs, possibly decrease toxicity increased oxidation and/or available nutrients fitness planted mesocosms. Practitioner Points comparing three planted/unplanted conditions two temperatures. Mesocosms had 30%–50% removal total composition shifted by time. Lack difference between treatments could indicate high level functional redundancy
Language: Английский
Citations
1
The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 960, P. 178383 - 178383
Published: Jan. 1, 2025
Naphthenic acids and naphthenic acid fraction compounds (NAFCs) are associated with production of unconventional petroleum resources, especially the Athabasca Oil Sands Alberta, Canada. This complex mixture acidic organic is toxic to a variety taxa, so represents an important environmental management challenge. Thus, there clear motivation better understand occurrence characteristics NAFCs in aquatic environments, their chemical behaviour, fate. Empowered by modern high-resolution mass spectrometry analyses, improved descriptions have emerged. These studies include spatiotemporal survey describing quantities NAFCs, as well forensic methods working towards reliable source differentiations. Work has also proceeded earnest advance mechanistic understandings how affected passive phenomena, such soil sediment sorption, chemically reactive mechanisms photolysis biodegradation. Further advances describe fate behaviour they transported transformed across compartments. In context Canadian oil sands, available data dynamic compound class that both affects receiving environment. By comprehensive understanding NAs we might anticipate extent which residual effects may persist reclaimed landscapes.
Language: Английский
Citations
0
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162329 - 162329
Published: April 1, 2025
Language: Английский
Citations
0
The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 948, P. 174720 - 174720
Published: July 10, 2024
Language: Английский
Citations
1
Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(17), P. 16713 - 16721
Published: Aug. 8, 2024
The extraction of bitumen from oil sands involves the use and reuse large volumes water. When water reaches a point where it can no longer be recycled, is termed process-affected (OSPW). OSPW contains mixture residual hydrocarbons, including naphthenic acids, has elevated salinity. This work presents new insights based on laboratory-based study how salinity influences acid compounds observed in Laboratory bench-scale simulations were set up to measure chemistry changes, with both time under different salt conditions, using Milli-Q simulated matrix. Samples analyzed for basic by high-resolution Orbitrap mass spectrometry. Data are discussed regard overall quantification organic species fraction (NAFCs) water, as well hydrocarbon class, double-bond equivalent, carbon number. Mass spectral quantitation characterization showed that presence salts ions (i) increases concentration measured (ii) changed relative distribution oxygenated polar hydrocarbons. For example, depletion aqueous O2-NAFCs occurred over corresponding increase levels O3-NAFCs saline waters. These findings temporal changes molecular level distributions NAFCs may have implications clean-up remediation OSPW.
Language: Английский
Citations
1
Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 473, P. 143536 - 143536
Published: Aug. 31, 2024
Language: Английский
Citations
1
FEMS Microbiology Ecology, Journal Year: 2024, Volume and Issue: 100(8)
Published: July 12, 2024
Ima gine you ar e a micr obe and are exposed to chemical contamination.Will be at risk?How will react, by which means?Just die?Expr ess some form of ada ptation using specific r esistance mec hanisms?Reduce toxicity c hemicals degr ading them, or negative tactic mov ement?Toler ate their pr esence thanks emergent properties your surrounding microbial comm unity?Expr other esilience wait for better times, return functional state after more less long period, depending on the intensity contamination?Alongside these questions that ecotoxicologists eager answer, question "Why do we need eserv monitor integrity environmental microbes communities they form?"has been core emerging multidisciplinary field obial ecotoxicology.Ov er last decade, have organized through international EcotoxicoMic network ( https://ecotoxicomic.or g ), whic h now counts 282 members from 46 countries.With three conferences in 2017 (Ly on, F rance), 2020 (online due COVID pandemic), 2022 (Montpellier, netw ork has addressed interactions , effects risks exposure systems generated new researc perspectiv es.A forthcoming fourth Ecotoxi-coMic conference take place Gothenburg (Sweden) 12-14 November 2024 https:// ecotoxicomic.org/ecotoxicomic-2024 ).Micr oor ganisms hav become ppr eciated as k ystone contributors numerous ecosystemic processes (Cavicchioli et al. 2019 including but not limited (i) cycling carbon, nitrogen, phosphorus, iron, sulfur; (ii) biological control pathogens; (iii) attenuation pollution; (iv) production consumption greenhouse gases; (v) contribution soil structure; (vi) biomass nutrients higher trophic levels.Micr unities also constitute ric hest genetic pool, can harnessed biotechnology.All this very much speaks favor fundamental role ecotoxicology play ecosystem ation functioning today.Indeed, high diversity, plasticity, adaptability, esponses obes hemical pollution ovides unique opportunity discover quantify associated crucial functions, explore responses world, impact contaminant eco-dynamics, ecosystems human health (Fig. 1 ).Thanks experimental oac hes tec hnologies av ailable today, curr ent esearc anges fr om labor atory studies detailed hanisms gene expression linked contaminants toxic model ganisms, integr ativ complex envir onmental scales.Given complexity investigated interactions, incr easingl y in-depth explor re- Recei v
Language: Английский
Citations
0
Environmental Science Processes & Impacts, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
Depuration in OSPW occurs by mechanisms of natural attenuation, sorption and microbial degradation, plant-mediated uptake biotransformation.
Language: Английский
Citations
0
Microbiology Resource Announcements, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 19, 2024
Draft genomes of two phenanthrene-degrading bacterial isolates from oil sands process-affected water (OSPW) in Alberta, Canada were sequenced. Both grew close association on agar plates and difficult to obtain axenically. They represent novel
Language: Английский
Citations
0