Destruction of per/poly-fluorinated alkyl substances by magnetite nanoparticle-catalyzed UV-Fenton reaction

Schlesinger, Danielle R.; McDermott, Collin; Le, Nam Q.; Ko, Jesse S.; Johnson, J. Karl; Demirev, Plamen A.; Xia, Zhiyong

doi:10.1039/d2ew00058j

Cited by 7 publications

(5 citation statements)

References 61 publications

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“…A UV Fenton reaction catalyzed by Fe 3 O 4 nanoparticles was proposed for PFAS destruction [ 99 ]. The Fenton AOP involves the oxidation of a ferrous ion (Fe 2+ ) by hydrogen peroxide in the presence of UV radiation, in order to promote the formation of reactive oxygen species, *OH and HO 2 * radicals [ 99 ]: Fe 2+ + H 2 O 2 🡪 Fe 3+ + *OH + OH − Fe 3+ + H 2 O 2 🡪 Fe 2+ + HO 2 * + H + 2H 2 O 2 🡪 *OH + HO 2 * + H 2 O …”

Section: Nanomaterials-based Aops and Arpsmentioning

confidence: 99%

“…The UV Fenton system used six 15 W UV-C bulbs (wavelength 254 nm, 120 μJ cm −2 ), nano-magnetite (20–30 nm) and different pH values and hydrogen peroxide concentrations [ 99 ]. The samples were irradiated from 5 min to one-hour periods and left reacting for 24 h before analysis.…”

Section: Nanomaterials-based Aops and Arpsmentioning

confidence: 99%

“…* These PFAS species are branched, which may impact their reactivity when compared with the linear compounds. Adapted with permission from reference [ 99 ]. Copyright {2022} The Royal Society of Chemistry.…”

Section: Figurementioning

confidence: 99%

“…A UV Fenton reaction catalyzed by Fe 3 O 4 nanoparticles was proposed for PFAS destruction [99]. The Fenton AOP involves the oxidation of a ferrous ion (Fe 2+ ) by hydrogen peroxide in the presence of UV radiation, in order to promote the formation of reactive oxygen species, *OH and HO 2 * radicals [99]: The UV Fenton system used six 15 W UV-C bulbs (wavelength 254 nm, 120 µJ cm −2 ), nano-magnetite (20-30 nm) and different pH values and hydrogen peroxide concentrations [99]. The samples were irradiated from 5 min to one-hour periods and left reacting for 24 h before analysis.…”

Section: Advances In Pfas Degradation Technologiesmentioning

confidence: 99%

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Nanomaterial-Based Advanced Oxidation/Reduction Processes for the Degradation of PFAS

Cardoso

Silva

2023

Nanomaterials

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This review focuses on a critical analysis of nanocatalysts for advanced reductive processes (ARPs) and oxidation processes (AOPs) designed for the degradation of poly/perfluoroalkyl substances (PFAS) in water. Ozone, ultraviolet and photocatalyzed ARPs and/or AOPs are the basic treatment technologies. Besides the review of the nanomaterials with greater potential as catalysts for advanced processes of PFAS in water, the perspectives for their future development, considering sustainability, are discussed. Moreover, a brief analysis of the current state of the art of ARPs and AOPs for the treatment of PFAS in water is presented.

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Section: Nanomaterials-based Aops and Arpsmentioning

confidence: 99%

Section: Nanomaterials-based Aops and Arpsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

“…A UV Fenton reaction catalyzed by Fe 3 O 4 nanoparticles was proposed for PFAS destruction [99]. The Fenton AOP involves the oxidation of a ferrous ion (Fe 2+ ) by hydrogen peroxide in the presence of UV radiation, in order to promote the formation of reactive oxygen species, *OH and HO 2 * radicals [99]: The UV Fenton system used six 15 W UV-C bulbs (wavelength 254 nm, 120 µJ cm −2 ), nano-magnetite (20-30 nm) and different pH values and hydrogen peroxide concentrations [99]. The samples were irradiated from 5 min to one-hour periods and left reacting for 24 h before analysis.…”

Section: Advances In Pfas Degradation Technologiesmentioning

confidence: 99%

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Nanomaterial-Based Advanced Oxidation/Reduction Processes for the Degradation of PFAS

Cardoso

Silva

2023

Nanomaterials

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“…An UV-Fenton reaction catalyzed by Fe3O4 nanoparticles was proposed for PFAS destruction [92]. Fenton AOP involves the oxidation of a ferrous ion (Fe 2+ ) by hydrogen peroxide in the presence of UV radiation to promote the formation of reactive oxygen species, * OH and HO2 * radicals [91]: Fe 2+ + H2O2 → Fe 3+ + * OH + OH -(43) Fe 3+ + H2O2 → Fe 2+ + HO2 * + H + (44) 2H2O2 → * OH + HO2 * + H2O (45) The UV Fenton system used six 15 W UV-C bulbs (wavelength 254 nm, 120 J cm −2 ), nano-magnetite (20-30 nm) and different pH values and hydrogen peroxide concentrations [92]. The samples were irradiated from 5 minutes to one-hour periods and left reacting for 24 hours before analysis -Figure 9 resumes the observed degradation efficiencies of the tested PFAS under this system.…”

Section: Advances In Pfas Treatment Technologiesmentioning

confidence: 99%

Nanomaterial-Based Advanced Oxidation/Reduction Processes for the Degradation of PFAS

Cardoso¹,

Silva²,

Silva³

2023

Preprint

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This review focus on a critical analysis of nanocatalysts for Advanced Reductive Processes (ARP) and Oxidation Processes (AOP) designed for the degradation of poly/perfluoroalkyl substances (PFAS) in water. Ozone, ultraviolet and photocatalyzed ARP and/or AOP will be the basic treatment technologies. Besides the review of the nanomaterials with greater potential as catalyst for advanced processes of PFAS in water, the perspectives for its future development considering sustainability considerations will be discussed. Moreover, a brief analysis of the current state of the art of the ARP and AOP for the treatment of PFAS in water will be presented.

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A Zwitterionic Hydrogel‐Based Heterogeneous Fenton Catalyst for Water Treatment

Gokhale,

Chen,

et al. 2024

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Persistent organic pollutants (POPs), including xenoestrogens and polyfluoroalkyl substances (PFAS), demand urgent global intervention. Fenton oxidation, catalyzed by iron ions, offers a cost‐effective means to degrade POPs. However, numerous challenges like acid dependency, catalyst loss, and toxic waste generation hinder practical application. Efforts to create long‐lasting heterogeneous Fenton catalysts, capable of simultaneously eliminating acid requirements, sustaining rapid kinetics, and retaining iron efficiently, have been unsuccessful. This study introduces an innovative heterogeneous zwitterionic hydrogel‐based Fenton catalyst, surmounting these challenges in a cost‐effective and scalable manner. The hydrogel, hosting individually complexed iron ions in a porous scaffold, exhibits substantial effective surface area and kinetics akin to homogeneous Fenton reactions. Complexed ions within the hydrogel can initiate Fenton degradation at neutral pH, eliminating acid additions. Simultaneously, the zwitterionic hydrogel scaffold, chosen for its resistance to Fenton oxidation, forms strong bonds with iron ions, enabling prolonged reuse. Diverging from existing designs, the catalyst proves compatible with UV‐Fenton processes and achieves rapid self‐regeneration during operation, offering a promising solution for the efficient and scalable degradation of POPs. The study underscores the efficacy of the approach by demonstrating the swift degradation of three significant contaminants—xenoestrogens, pesticides, and PFAS—across multiple cycles at trace concentrations.

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Destruction of per/poly-fluorinated alkyl substances by magnetite nanoparticle-catalyzed UV-Fenton reaction

Abstract: Novel economically-sustainable and environmentally-friendly technologies for per- and poly-fluoroalkyl substances (PFAS) destruction are becoming increasingly important as PFAS contamination has increased in drinking water throughout the globe. UV-Fenton chemistry catalyzed...

Cited by 7 publications

References 61 publications

Nanomaterial-Based Advanced Oxidation/Reduction Processes for the Degradation of PFAS

Nanomaterial-Based Advanced Oxidation/Reduction Processes for the Degradation of PFAS

Nanomaterial-Based Advanced Oxidation/Reduction Processes for the Degradation of PFAS

A Zwitterionic Hydrogel‐Based Heterogeneous Fenton Catalyst for Water Treatment

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