Critical Review on the Mechanisms of Fe²⁺ Regeneration in the Electro-Fenton Process: Fundamentals and Boosting Strategies

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(8), P. 4635 - 4662

Published: March 14, 2023

This review presents an exhaustive overview on the mechanisms of Fe3+ cathodic reduction within context electro-Fenton (EF) process. Different strategies developed to improve rate are discussed, dividing them into two categories that regard mechanistic feature is promoted: electron transfer control and mass transport control. Boosting conversion Fe2+ via includes: (i) formation a series active sites in both carbon- metal-based materials (ii) use other emerging such as single-atom catalysis or confinement effects. Concerning enhancement regeneration by control, main routes involve application magnetic fields, pulse electrolysis, interfacial Joule heating effects, photoirradiation. Finally, challenges singled out, future prospects described. aims clarify Fe3+/Fe2+ cycling process EF process, eventually providing essential ideas for smart design highly effective systems wastewater treatment valorization at industrial scale.

Language: Английский

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Solar photoelectro-Fenton: A very effective and cost-efficient electrochemical advanced oxidation process for the removal of organic pollutants from synthetic and real wastewaters

Chemosphere, Journal Year: 2023, Volume and Issue: 327, P. 138532 - 138532

Published: March 30, 2023

Recalcitrant and toxic organic pollutants from wastewaters are scarcely removed in conventional wastewater treatment plants. To preserve the water quality, organics need to be by developing powerful oxidation technologies. Our laboratory proposed 2007 a potent electrochemical advanced process (EAOP) for remediation, so-called solar photoelectro-Fenton (SPEF). This review summarizes advances of this emerging technology up 2022, making evident its effectiveness cost-efficiency destruction usual pollutants. The simultaneous action generated hydroxyl radicals photolysis sunlight explains high power SPEF respect other EAOPs. is initiated describing fundamentals remark role produced oxidants benefits using irradiation performance. photoelectrochemical systems used (bench tank reactor pre-pilot flow plant) assessment operating variables discussed. characteristics most common homogeneous degradation mineralization several synthetic solutions industrial chemicals, herbicides, pharmaceuticals, dyes, as well some real wastewaters, further described. influence cell, electrodes, solution pH, electrolyte composition, Fe2+ pollutant concentration, current density analyzed. performance SPEF-like with active chlorine heterogeneous processes solid catalysts such Fe3O4 sodium vermiculite also Finally, combined techniques like photocatalysis, photoelectrocatalysis, anaerobic digestion, nanofiltration reported.

Language: Английский

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A new strategy for improving the energy efficiency of electro-Fenton: Using N-doped activated carbon cathode with strong Fe(III) adsorption capacity to promote Fe(II) regeneration

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 357, P. 120823 - 120823

Published: April 1, 2024

Language: Английский

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Impact of different anode materials on electro-Fenton process and tannery wastewater treatment using sequential electro-Fenton and electrocoagulation

Chemosphere, Journal Year: 2023, Volume and Issue: 336, P. 139225 - 139225

Published: June 23, 2023

Language: Английский

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Ketoprofen and diclofenac removal and toxicity abatement in a real scale sewage treatment Plant by photo-Fenton Process with design of experiments

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(5), P. 110699 - 110699

Published: Aug. 3, 2023

Language: Английский

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Leakage of surfactants in greywater: Environmental impact, mitigation, and their circular economy

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(5), P. 110715 - 110715

Published: Aug. 6, 2023

Language: Английский

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Optimizing sewage treatment by UV/H2O2 process and vertical flow constructed wetland integration

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 64, P. 105580 - 105580

Published: June 17, 2024

Language: Английский

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Greywater treatment for reuse: Effect of combined foam fractionation and persulfate-iron based fenton process in the bacterial removal and degradation of organic matter and surfactants

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 415, P. 137792 - 137792

Published: June 17, 2023

Greywater (GW) represents a viable candidate in adapting to increased water scarcity due climate change because its reuse can significantly reduce domestic consumption. This work focused on studying the combination of physical foam fractionation (FF) as pre-treatment step and Fenton processes polishing-step. The FF, applied for first time real GW, allowed reaching removal 60 85% chemical oxygen demand (COD) total surfactants (TSU), respectively, bacterial about 3Log units. using Fe2+/S2O82− Fe2+/H2O2 were optimized through response surface methodology (RSM) with central composite design (CCD). concentration Fe2+, oxidant treatment chosen variable factors, while COD TSU removals target responses. According RSM results, optimum conditions operate (mg/L) Fe2+:12.5/S2O82−:185.6 Fe2+:50/H2O2:157.6 30 min both processes. A 89 78% 99.7 96.6% obtained respectively. Complete was detected 4-fold lower sludge production than Fe2+/H2O2. persulfate-based process requires low (2.5 h) energy consumption limited production, making it promising technology future research full-scale application.

Language: Английский

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Cellulose-MIL-88A photocatalytic membrane to treat effluents containing dyes and oil emulsions

Catalysis Today, Journal Year: 2024, Volume and Issue: 441, P. 114846 - 114846

Published: May 26, 2024

Language: Английский

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Effective degradation of phenacetin in wastewater by (photo)electro-Fenton processes: Investigation of variables, acute toxicity, and intermediates

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(3), P. 112704 - 112704

Published: April 4, 2024

Language: Английский

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