Study of polarized activated carbon filters as simultaneous adsorbent and 3D-type electrode materials for electro-Fenton reactors

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Photo-assisted electrochemical advanced oxidation processes for the disinfection of aqueous solutions: A review

“…These materials are obtained by spend biomass sources such as animal feedings ( Y. Wang et al., 2019 ), agricultural or woody materials ( Deng et al., 2019 ), food wastes ( Tovar et al., 2019 ) and sewage sludge ( Huang et al., 2020 ; Mian and Liu, 2019 ) among others ( Do Minh et al., 2020 ). Recent studies of biochar materials focuses on their use as simultaneous adsorbents and 3D-cathodes where adsorption, disinfection and pollutants degradation occur followed by the regeneration of the electrode material surface ( Bañuelos et al., 2015 ; Mesones et al., 2020 ; Robles et al., 2020b ). The integration of such materials in photo-assisted EAOPs for the inactivation of microorganisms by indirect oxidation will be a relevant topic of research and technology development in upcoming years.…”

“…The Fenton reaction, which is based on the use of a mixture of iron ions (Fe 2+ ) and H 2 O 2 that generates • OH under mild acidic conditions, has been successfully tested as an attractive disinfection alternative ( García-Fernández et al., 2019 ; Rodríguez-Chueca et al., 2012 ). Nevertheless, the large chemical consumption of H 2 O 2 and the need to add and maintain appropriate ionic Fe concentrations in an acidic medium, coupled with the requirement to remove the iron species and neutralize the acid of the aqueous effluent after treatment, constitute major cost barriers for large-scale applications ( Brillas and Martínez-Huitle, 2015 ; Fernández et al., 2018 ; García-Espinoza et al., 2019 ; Robles et al., 2020a , 2020b ).…”

A Novel Signaling Strategy for an Ultrasensitive Photoelectrochemical Immunoassay Based on Electro-Fenton Degradation of Liposomes on a Photoelectrode

“…The Fenton reaction, the reaction between Fe 2+ and H 2 O 2 (Fe 2+ + H 2 O 2 + H + → Fe 3+ + H 2 O + ·OH), has been utilized as a promising oxidation technology for wastewater treatment due to the high degradation efficiency and facile operation conditions. , Because of the strong oxidation ability of the produced hydroxyl radicals by the Fenton reagent, many organic pollutants can be thoroughly degraded into CO 2 and H 2 O . In addition to pollutant degradation, the Fenton reaction has also been applied in the fields of cancer treatment and biosensors. − However, traditional Fenton technology for pollutant degradation still suffers from iron sludge formation because of the high consumption of Fe 2+ . , In the electro-Fenton reaction, the regeneration of Fe 2+ can be achieved by electrochemical reactions, which can greatly reduce the consumption of Fe 2+ and thereby overcome the shortcoming of traditional Fenton technology. − In addition, electro-Fenton technology has a higher pollutant degradation efficiency than traditional Fenton technology. − Despite the high efficiency of the electro-Fenton reaction in the degradation of organic compounds, the electro-Fenton reaction has not been applied to the PEC immunoassay. The motivation of this work is to weaken steric hindrance effects through electro-Fenton degradation and thus develop a “signal on” PEC immunoassay platform.…”