Per- and polyfluoroalkyl substances in the environment

Science, Journal Year: 2022, Volume and Issue: 375(6580)

Published: Feb. 3, 2022

Over the past several years, term PFAS (per- and polyfluoroalkyl substances) has grown to be emblematic of environmental contamination, garnering public, scientific, regulatory concern. are synthesized by two processes, direct fluorination (e.g., electrochemical fluorination) oligomerization fluorotelomerization). More than a megatonne is produced yearly, thousands wind up in end-use products. Atmospheric aqueous fugitive releases during manufacturing, use, disposal have resulted global distribution these compounds. Volatile facilitate long-range transport, commonly followed complex transformation schemes recalcitrant terminal PFAS, which do not degrade under conditions thus migrate through environment accumulate biota multiple pathways. Efforts remediate PFAS-contaminated matrices still their infancy, with much current research targeting drinking water.

Language: Английский

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Recent advances in municipal landfill leachate: A review focusing on its characteristics, treatment, and toxicity assessment

The Science of The Total Environment, Journal Year: 2019, Volume and Issue: 703, P. 135468 - 135468

Published: Nov. 13, 2019

Language: Английский

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A review of the occurrence, transformation, and removal of poly- and perfluoroalkyl substances (PFAS) in wastewater treatment plants

Water Research, Journal Year: 2021, Volume and Issue: 199, P. 117187 - 117187

Published: April 24, 2021

Language: Английский

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Per and poly-fluoroalkyl substances (PFAS) as a contaminant of emerging concern in surface water: A transboundary review of their occurrences and toxicity effects

Journal of Hazardous Materials, Journal Year: 2021, Volume and Issue: 419, P. 126361 - 126361

Published: June 8, 2021

Language: Английский

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Adsorption of perfluoroalkyl and polyfluoroalkyl substances (PFASs) from aqueous solution - A review

The Science of The Total Environment, Journal Year: 2019, Volume and Issue: 694, P. 133606 - 133606

Published: July 30, 2019

Language: Английский

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Chemical Aspects of Human and Environmental Overload with Fluorine

Chemical Reviews, Journal Year: 2021, Volume and Issue: 121(8), P. 4678 - 4742

Published: March 16, 2021

Over the last 100-120 years, due to ever-increasing importance of fluorine-containing compounds in modern technology and daily life, explosive development fluorochemical industry led an enormous increase emission fluoride ions into biosphere. This made it more important understand biological activities, metabolism, degradation, possible environmental hazards such substances. comprehensive critical review focuses on effects organofluorine (mainly pharmaceuticals agrochemicals) human health environment. To give a better overview, various connected topics are also discussed: reasons trends advance agrochemicals, metabolism fluorinated drugs, withdrawn natural sources organic inorganic fluorine environment (including biosphere), intake, finally biomarkers exposure.

Language: Английский

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Energy-Efficient Electrochemical Oxidation of Perfluoroalkyl Substances Using a Ti₄O₇ Reactive Electrochemical Membrane Anode

Environmental Science & Technology Letters, Journal Year: 2019, Volume and Issue: 6(8), P. 504 - 510

Published: July 24, 2019

An energy-efficient Magnéli phase Ti4O7 reactive electrochemical membrane (REM) was applied for the oxidation of perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic (PFOS). Approximately 5-log removal these compounds achieved in a single pass through REM with residence times ∼11 s at 3.3 V/SHE PFOA 3.6 PFOS. The permeate concentrations PFOS were <86 35 ng L–1, from initial 4.14 5 mg respectively. highest rates 3415 ± 203 μmol m–2 h–1 2436 106 flux 720 L (residence ∼3.8 s). levels energy consumption (per log removal) to remove below detection limits 5.1 6.7 kWh m–3, These values are lowest reported approximately an order magnitude lower than those other technologies (i.e., ultrasonication, photocatalysis, vacuum ultraviolet photolysis, microwave–hydrothermal decomposition), demonstrating promise technology water treatment applications.

Language: Английский

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Contamination of groundwater with per- and polyfluoroalkyl substances (PFAS) from legacy landfills in an urban re-development precinct

Environmental Pollution, Journal Year: 2019, Volume and Issue: 248, P. 101 - 113

Published: Feb. 9, 2019

Language: Английский

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Legacy and Emerging Per- and Polyfluoroalkyl Substances: Analytical Techniques, Environmental Fate, and Health Effects

International Journal of Molecular Sciences, Journal Year: 2021, Volume and Issue: 22(3), P. 995 - 995

Published: Jan. 20, 2021

Due to their unique chemical properties, per- and polyfluoroalkyl substances (PFAS) have been used extensively as industrial surfactants processing aids. While several types of PFAS voluntarily phased out by manufacturers, these chemicals continue be ecological public health concern due persistence in the environment presence living organisms. Moreover, while compounds referred “legacy” remain environment, alternative emerged replacements for legacy predecessors are now detected numerous matrices. In this review, we discuss historical uses PFAS, recent advances analytical techniques analysis compounds, fate environment. addition, evaluate current biomonitoring studies human exposure emerging examine associations with impacts, including cancer- non-cancer-related outcomes. Special focus is given short-chain perfluoroalkyl acids (PFAAs) ether-substituted, alternatives hexafluoropropylene oxide dimer acid (HFPO-DA; tradename GenX), 4,8-dioxa-3H-perfluorononanoic (DONA), 6:2 chlorinated polyfluoroethersulfonic (6:2 Cl-PFESA; F-53B).

Language: Английский

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What are the effects of PFAS exposure at environmentally relevant concentrations?

Chemosphere, Journal Year: 2020, Volume and Issue: 258, P. 127340 - 127340

Published: June 12, 2020

Language: Английский

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