Advances in neurotoxicology, Journal Year: 2023, Volume and Issue: unknown, P. 325 - 366
Published: Jan. 1, 2023
Language: Английский
Microorganisms, Journal Year: 2025, Volume and Issue: 13(1), P. 155 - 155
Published: Jan. 14, 2025
Although bioremediation is considered the most environmentally friendly and sustainable technique for remediating contaminated soil water, it effective when combined with physicochemical methods, which allow preliminary removal of large quantities pollutants. This allows microorganisms to efficiently eliminate remaining contaminants. In addition requiring necessary genes degradation pathways specific substrates, as well tolerance adverse environmental conditions, may perform below expectations. One typical reason this high toxicity xenobiotics present in concentrations, stemming from vulnerability bacteria introduced a site. especially true planktonic bacteria, whereas within biofilms or microcolonies have significant advantages over their counterparts. A physical matrix essential formation, maintenance, survival bacterial biofilms. By providing such immobilization, formation can be facilitated accelerated. Therefore, immobilization offers comprehensive solution cleanup by harnessing specialized metabolic activities while ensuring retention efficacy at target sites. many cases, also need methods that are otherwise required initially reduce contaminant concentrations. Then, will possible use remediation higher concentrations xenobiotics, significantly reducing costs maintaining rapid rate processes. review explores benefits highlighting materials processes developing an optimal matrix. It focuses on following four key areas: (i) types organic pollutants impacting human health, (ii) strains used processes, (iii) (iv) cells various carriers targeted pollutant degradation.
Language: Английский
Citations
2
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153668 - 153668
Published: July 2, 2024
This work reports on the first use of deep eutectic solvents (DESs) as an environmentally sustainable solution for extractive removal perfluorooctanoic acid (PFOA), one most prevalent and persistent emerging contaminants, from aqueous media. The design framework DESs was based multiple metrics, including extraction performance, density, viscosity, environmental impact, hydrophobicity. Through multi-criteria evaluation ten candidate DESs, trioctylphosphine oxide lauric (TOPO:LauA, 1:1) demonstrated exceptional single-stage efficiency (99.74 %), far outperforming toluene benchmark (82.26 showing favorable characteristics across all other assessed criteria. Remarkably, (>98 %) TOPO:LauA sustained diverse operational conditions. latter included a broad pH temperature spectrum (3–9 pH; 15–100 °C), solvent-to-feed ratios down to 1:7 (w/w), contaminant concentrations low 0.100 mg/L, rapid equilibration within 1 min, reusability throughout seven cycles without any observable degradation, verified by spectroscopic analysis. also selectivity PFOA, in presence per- polyfluoroalkyl substances (PFAS) or synthetic wastewater matrix simulating municipal wastewater. Moreover, computational quantum chemistry modeling using density functional theory (DFT) COSMO-RS, implemented Materials Studio COSMOtherm software, employed. provided insights into molecular mechanism strong agreement with experimental findings. development this new DES PFOA is critical breakthrough water treatment that surpasses efficacy, sustainability, scalability traditional PFAS conventional methods PFAS, such adsorption membrane separation.
Language: Английский
Citations
10
Eco-Environment & Health, Journal Year: 2024, Volume and Issue: 3(3), P. 355 - 368
Published: June 27, 2024
The detection of per- and polyfluoroalkyl substances (PFAS) in water presents a significant challenge for developing countries, requiring urgent attention. This review focuses on understanding the emergence PFAS drinking water, health concerns, removal strategies systems countries. indicates need more studies to be conducted many nations due limited information environmental status fate PFAS. consequences are enormous cannot overemphasized. Efforts ongoing legislate national standard water. Currently, there few known mitigation efforts from African contrast several Asia. Therefore, is an develop economically viable techniques that could integrated into large-scale operations remove region. However, despite success achieved with removing long-chain required eliminating short-chain moieties
Language: Английский
Citations
5
RSC Sustainability, Journal Year: 2024, Volume and Issue: 2(11), P. 3183 - 3201
Published: Jan. 1, 2024
The combined stability, mobility, and bioaccumulation of per- poly-fluoroalkyl substances (PFAS) has prompted a global environmental crisis.
Language: Английский
Citations
5
Journal of Molecular Liquids, Journal Year: 2024, Volume and Issue: 407, P. 125170 - 125170
Published: June 1, 2024
Language: Английский
Citations
4
The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 967, P. 178644 - 178644
Published: Feb. 12, 2025
This manuscript systematically reviews 156 peer-reviewed articles on methods for estimating total per- and polyfluoroalkyl substances (PFAS), following preferred reporting items systematic meta-analyses (PRISMA) guidelines. Direct indirect of PFAS include targeted analysis, fluorine (TF), organic (TOF), extractable (EOF), absorbable (AOF), oxidizable precursor (TOP) assay. Combustion ion chromatography (CIC) was the most utilized method (>50%), followed by particle-induced gamma-ray emission (PIGE, 9%) high-resolution-continuum source graphite furnace molecular absorption spectrometry (HR-CS-GFMAS, 6%). Techniques like instrumental neutron activation analysis (INAA) nuclear magnetic resonance (NMR) were less common. A geographic bias evident, with 69% studies from US (33%), Sweden (12%), China Germany (11%). Most research environmental samples (water, soil, sediments), while significant data gaps noted in South America, Africa, atmospheric PFAS. Challenges inter-laboratory comparisons arise inconsistent units (e.g., mg/L, μg/m3, %, etc.). About 75% involved pre-treatment solvent extraction, sorbents), 25% did not. detection limit observed concentrations varied widely, low water (ng/L) to higher levels biota, products (mg/L). Limitations contradictory results when complementary techniques are applied same sample, potentially leading over- or under-estimation. Across studies, a substantial fraction TF remains unaccounted for, highlighting need non-targeted screening (NTS) identify unknown (UPFAS UOPFAS). Bridging these is critical advancing risk assessment.
Language: Английский
Citations
0
Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 74, P. 107793 - 107793
Published: April 27, 2025
Language: Английский
Citations
0
Accounts of Chemical Research, Journal Year: 2023, Volume and Issue: 57(1), P. 153 - 163
Published: Dec. 15, 2023
ConspectusAlkanes play a pivotal role in industrial, environmental, and biological processes. They are characterized by their carbon–carbon single-bond structure, remarkable stability, conformational diversity. Fluorination of such compounds imparts unique physicochemical properties that often enhance pharmacokinetic profiles, metabolic receptor interactions while keeping beneficial properties. However, per- polyfluoroalkyl substances (PFAS) show persistent presence the environment potential adverse health effects, which propelled them to forefront global environmental discussions. Alkyl also prototypical for stereoelectronic (SE) effects widely applied chemistry. Substituents typically described as electron-density-donating/withdrawing and/or responsible sterically interacting with reagents or strategic groups molecule. That alkane branching can result higher stability compared less-branched isomers has been investigated detail testing quantum chemical methods, particular density functional theory (DFT). Alkane results spatially compact structures close intramolecular contacts so at specific size detailed balance attractive London dispersion covalent versus repulsive Pauli exchange shifts new, chemically unfragile situations. This may lead dissociation room temperature opens central question: what is smallest crowed cannot be made synthetically? In this Account, we try shed light on interplay among various (free) energy components crowded (fluoro)alkane dissociation. context, homolytic cleavage C–C bond series model alkanes increasing tert-butyl (tBu), adamantyl (Ad), [1.1.1]propellanyl (Prop) substituents investigated. Reference energies calculated PNO-LCCSD(T)-F12b level used benchmark performance contemporary DFT functionals. line previous conclusions, application corrections functionals mandatory. For structures, accurate description midrange correlation specifically van der Waals interactions, crucial, observed density-dependent VV10 correction superior D4 although asymptotic region better latter. The best available dispersion-inclusive systematic reasonably small residual errors safely large systems (>100 atoms), coupled cluster methods basis sets not computationally feasible anymore. qualitatively correct predictions synthetic accessibility under equilibrium conditions (free energy), inclusion thermostatistical (entropy) contributions essential. According our results, tetra-tert-butylmethane (C17tBu) largest most system positive free should synthesizable. difference between hydrogenated perfluorinated originates from increase steric repulsion substituents, compensated same extent orbital interactions. A sometimes-assumed similar demand fluorine hydrogen atoms corroborated investigations systems. Perfluorination found substantially decrease thermal rendering hexamethylethane (C8tBuF) last potentially stable representative.
Language: Английский
Citations
8
Journal of Environmental Analysis Health and Toxicology, Journal Year: 2024, Volume and Issue: 27(1), P. 1 - 13
Published: March 26, 2024
Per- and polyfluoroalkyl substances (PFASs) are a large complex group of thousands synthetic chemicals with different properties such as strong acidity, high surface activity at very low concentrations, chemical stability, water oil repellency. Many PFASs have been used in various industrial consumer applications based on the desired functionality production capability, consequently emerged pervasive environmental contaminants major concern. Recognition that several transported globally, bioaccumulate, exert multiple adverse effects quality health has led to their regulation ultimate phase-out. Despite decades global management research PFAS, fundamental obstacles still remain addressing worldwide contamination by these associated impacts human health. Here, we reviewed issues, barriers, challenges must be addressed remedy “PFAS problem” from scientific, technological, policy perspectives. A comprehensive review latest scientific recent legislative developments regarding PFAS will improve assessment numerous market near future.
Language: Английский
Citations
2
Food Packaging and Shelf Life, Journal Year: 2024, Volume and Issue: 43, P. 101281 - 101281
Published: April 4, 2024
Language: Английский
Citations
2