Showing 241-255 of 403
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Dual-Functional Phosphorene Nanocomposite Membranes for the Treatment of Perfluorinated Water: An Investigation of Perfluorooctanoic Acid Removal via Filtration Combined with Ultraviolet Irradiation or Oxygenation
Science
29 Dec 2020 | Membranes
The removal of PFOA accumulated on the membrane surface achieved 99% after the membranes were treated with ultraviolet light and liquid aerobic oxidation.
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Sorption behavior of 6:2 chlorinated polyfluorinated ether sulfonate (F-53B) on four kinds of nano-materials
Science
22 Dec 2020 | Sci Total Environ
F-53B was found to be removed most efficiently with surface modified nanoclay from electroplating wastewater.
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Photodegradation of Perfluorooctanesulfonic Acid on Fe-Zeolites in Water
Science
22 Dec 2020 | Environ Sci Technol .
The presented study offers an option for a novel water remediation technology, comprising first a zeolite-based adsorption step followed by a step for photochemical regeneration of the adsorbent.
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Photo enhanced degradation of polyfluoroalkyl and perfluoroalkyl substances
Science
16 Dec 2020 | Heliyon
High degradation and defluorination efficiency of PFAS could be achieved by photon driven processes such as photolysis, photochemical, photocatalysis, and photoreduction.
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Cosmetics, cellphones, guitar strings: where we found 'forever chemicals'
News
14 Dec 2020 | The Guardian
Altogether, we found PFAS in more than 200 use categories. We already knew about PFAS in fire-fighting foams, refrigerants, lithium-ion batteries, carpets, waterproof fabrics, ski waxes, fast-food paper and board containers, muffin forms, popcorn bags, and dental floss.
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EPA Issues Interim Strategy for Addressing PFAS in Wastewater Permits
Policy
8 Dec 2020
The interim strategy makes a number of recommendations for the consideration of PFAS in the NPDES permit program.
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Mass-Based, Field-Scale Demonstration of PFAS Retention within AFFF-Associated Source Areas
Science
8 Dec 2020 | Environ Sci Technol
This study used concentration data obtained via a high-resolution sampling and analytical protocol to estimate the PFAS mass distribution in source and downgradient areas of a former firefighter training area.
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Software Comparison for Nontargeted Analysis of PFAS in AFFF-Contaminated Soil
Science
2 Dec 2020 | J Am Soc Mass Spectrom
FluoroMatch and Compound Discoverer were found to both produce high-quality data that were useful for assessing PFAS contamination in the soil.
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Groundwater contamination by fluorinated aromatics: benzotrifluoride and its derivatives
Science
2 Dec 2020 | Chemosphere
After >40 years, benzotrifluorides are still present in the μg L-1 concentration range in groundwater.
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Correlation Analysis of Perfluoroalkyl Substances in Regional U.S. Precipitation Events
Science
2 Dec 2020 | Water Res
HFPO-DA (GenX) was detected in rainwater at all sites with local point sources strongly contributing to wet deposition.
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German Federal Agency's International Conference: PFAS - Dealing with contaminants of emerging concern
Events
30 Nov 2020
The German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety and the German Environment Agency will be hosting a two-day international conference focusing on strategies on how to deal with PFAS-contaminated soil and groundwater.
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Polymer-coated electrode detects PFAS in water
News
25 Nov 2020 | C&EN
Instead of bringing water samples back to the lab for analysis, researchers would like to have a continuous field monitor. ”We knew that electrochemistry potentially would be sensitive and selective enough to detect PFAS, and it’s rather inexpensive,” Dick says.
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‘Dark Waters’ attorney: New ‘forever’ chemicals pose threat to environment, human health
News
24 Nov 2020 | Pittsburgh Post-Gazette
Mr. Bilott said. “The regulators need to address GenX as a class of chemicals because it’s impossible for the EPA to keep track of and regulate every one.”
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Rapid Characterization of Emerging Per- and Polyfluoroalkyl Substances in Aqueous Film-Forming Foams Using Ion Mobility Spectrometry-Mass Spectrometry
Science
24 Nov 2020 | Environ Sci Technol
Using analytical chemistry techniques PFAS in AFFF were rapidly characterized.
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[Informational Webinar] EPA's Innovative Ways to Destroy PFAS Challenge
Events
23 Nov 2020
EPA is partnering with the other stakeholders, to co-sponsor a technical challenge regarding the destruction of PFAS. The challenge asks solvers to submit detailed plans for a non-thermal way of destroying PFAS in AFFF, while creating the least amount of potentially harmful byproducts with a $50,000 prize.