Performance and working mechanism of a coal fly ash-based particle electrode in the catalytic oxidation of ofloxacin in a three-dimensional electro-Fenton reactor

Wang, Nannan; Li, Liangwei; Zou, Wenming; Wang, Peng

doi:10.1016/j.jece.2023.109561

Cited by 3 publications

(2 citation statements)

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“…Among them, iron-doped coal fly ash-based biomass carbon as the electro-Fenton electrode could effectively remove OFN and achieved a high chemical oxygen demand (COD) removal ratio. 14 In addition, Cu 2 O@CuO nanowires as a PMS activator in the electroactive filter could also highly efficiently degrade OFN based on generated active oxygen. 15 Then, bimetallic Fe−Mn oxides integrated carbonaceous as the gas-diffusion cathode for the heterogeneous electro-Fenton reaction could release the active radical ( • OH) for effective degradation of OFN.…”

Section: Introductionmentioning

confidence: 99%

“…The electrochemical oxidation (EO) process coupled with the peroxymonosulfate (PMS) reaction (EO/PMS), one of the EO-based AOPs, exhibits great potential in wastewater treatment because of its low cost and high treatment performance. Among them, iron-doped coal fly ash-based biomass carbon as the electro-Fenton electrode could effectively remove OFN and achieved a high chemical oxygen demand (COD) removal ratio . In addition, Cu 2 O@CuO nanowires as a PMS activator in the electroactive filter could also highly efficiently degrade OFN based on generated active oxygen .…”

Section: Introductionmentioning

confidence: 99%

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Unraveling the Degradation Mechanism and Interaction Mechanism of Ofloxacin Based on Reactive Oxygen Species via Electrochemically Activating Peroxymonosulfate

Li,

Cen,

et al. 2024

ACS EST Eng.

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Peroxymonosulfate (PMS) as an oxidant has been extensively applied to remove organic pollutants, but the molecular interaction mechanism of PMS and organic pollutants under the electrochemical process remains unclear. This work unraveled the interaction relationship of PMS on ofloxacin (OFN) degradation by PMS-based electrochemical oxidation. The results showed that hydroxyl and sulfate radicals generated from the electrochemical reaction could effectively degrade OFN. Under the electrochemical oxidation process, 100% or 12.1 ± 2.1% of OFN was degraded within 15 min in the presence or absence of PMS, respectively. Quantum chemical calculations and molecular dynamics simulations indicated that the hydrogen bonds and van der Waals force were the primary interaction force between PMS and OFN. Besides, the PMS−OFN binding process was a stable dynamic process, and its stability was dependent on the number of hydrogen bonds generated. The structure−activity relationship suggested that OFN was transformed into short-chain intermediates with lower toxicity within 15 min. Additionally, this electrochemical system for degrading OFN retained excellent reusability and recyclability, affording high oxidation ability during successive cycles. More importantly, this electrochemical process could highly efficiently degrade various organic pollutants (4-chlorophenol, methyl orange, sulfamethoxazole, and perfluorooctanoic acid). This study provided a new possibility for the application of the electrochemical system in large-scale wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%