Enhanced perfluorooctanoic acid (PFOA) degradation by electrochemical activation of peroxydisulfate (PDS) during electrooxidation for water treatment

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 942, P. 173736 - 173736

Published: June 4, 2024

Improved treatment of per- and polyfluoroalkyl substances (PFAS) in water is critically important light the proposed United States Environmental Protection Agency (USEPA) drinking regulations at ng L−1 levels. The addition peroxymonosulfate (PMS) during electrochemical oxidation (EO) can remove destroy PFAS, but levels have not been tested, PMS itself be toxic. objective this research was to test peroxydisulfate (PDS, an alternative PMS) activation by boron-doped diamond (BDD) electrodes for level perfluorooctanoic acid (PFOA) degradation. influence PDS concentration, temperature, real matrix effects, PFOA concentration on PDS-EO performance were systematically examined. Batch reactor experiments revealed that 99.8 % degraded 69.1 defluorination achieved, confirming mineralization. Scavenging implied sulfate radicals (SO4–) played a more role degradation than HO, 1O2, or electrons (e−). Further identification transformation products liquid chromatography-mass spectrum (LC-MS) analysis established plausible pathways. corroborates direct electron transfers electrode initiate SO4– improves overall cleaving CC bond between C7F15 COOH moieties PFOA, leading possible such as F−. perfluoroalkyl oxidized resulting formation shorter chain perfluorocarboxylic acids (e.g., perfluorobutanoic [PFBA]), with eventual mineralization CO2 At environmentally relevant low initial 100 99 achieved. slightly affected less removal observed river sample (91 %) compared tests conducted Milli-Q (99 %). Overall, EO provided destructive approach elimination PFOA.

Language: Английский

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A comprehensive review of the challenges and opportunities in microalgae-based wastewater treatment for eliminating organic, inorganic, and emerging pollutants

Biocatalysis and Agricultural Biotechnology, Journal Year: 2024, Volume and Issue: 60, P. 103316 - 103316

Published: July 6, 2024

Language: Английский

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Bypassing gas-liquid mass transfer resistance in a Fenton wet scrubber for boosting the removal of hydrophobic styrene: Construction of a novel gas-solid-liquid triple-phase interface

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160166 - 160166

Published: Feb. 1, 2025

Language: Английский

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Clustered flower-like Mg/Al/Fe-LDHs-based material for highly efficient Fenton degradation of crystal violet wastewater

Environmental Research, Journal Year: 2025, Volume and Issue: 275, P. 121391 - 121391

Published: March 13, 2025

Language: Английский

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Efficient adsorption of short-chain perfluoroalkyl substances by pristine and Fe/Cu-loaded reed straw biochars

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 946, P. 174223 - 174223

Published: June 24, 2024

Language: Английский

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Comprehensive review of combustion ion chromatography for the analysis of total, adsorbable, and extractable organic fluorine

Journal of Separation Science, Journal Year: 2024, Volume and Issue: 47(15)

Published: Aug. 1, 2024

Poly- and perfluoroalkyl substances (PFAS) are a class of persistent organic pollutants whose high stability appreciable water solubility have led to near-global contamination. PFAS bioaccumulative toxins that been linked myriad disorders detected nearly universally in human blood. Liquid chromatography-tandem mass spectrometry is the most frequent method used for quantitation, though this typically only measures few dozen >14 000 known has shown account small portion total fluorine present. Sum parameter methods such as total, extractable, adsorbable emerged alternative measurements determination. Combustion ion chromatography become preferred organofluorine measurement where sorbent or extract containing combusted emitted hydrofluoric acid (HF) measure cumulative Herein we critically review types measurement, their separation from sample matrix, key parameters analytical instrument affect sensitivity, reproducibility, recovery with regards analysis.

Language: Английский

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Dielectric Barrier Discharge (DBD) Enhanced Fenton Process for Landfill Leachate Nanofiltration: Organic Matter Removal and Membrane Fouling Alleviation

Water Research, Journal Year: 2024, Volume and Issue: 266, P. 122358 - 122358

Published: Aug. 29, 2024

Language: Английский

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Sustainable Approach for Landfill Leachate Treatment through Dielectric Barrier Discharge/Ferrate (DBD/Fe(VI)) Enhanced Nanofiltration

Journal of Membrane Science, Journal Year: 2024, Volume and Issue: 714, P. 123404 - 123404

Published: Oct. 13, 2024

Language: Английский

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Enhanced acetaminophen degradation by photoelectro-persulfate system with 3D nanostructured PbO2/Sb-SnO2//blue-TiO2//WO3 bifacial photoanode and Mo-CuFeO2/CF cathode

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132542 - 132542

Published: March 1, 2025

Language: Английский

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A Self-Respiring Cathode Weaken the Competing Reactions of Electro-Fenton Synergistic Pms-Activated Systems for Activation of Dual Oxidants: Coupling System Powers Centralized Active Reaction Zone of Pfoa

Published: Jan. 1, 2025

Language: Английский

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