Cathodic polarization effect on the electro-Fenton regeneration of activated carbon

Bañuelos, Jennifer A.; García-Rodríguez, Orlando; Rodríguez-Valadéz, Francisco J.; Manríquez, J.; Bustos, Erika; Rodríguez, A.; Godı́nez, Luis A.

doi:10.1007/s10800-015-0815-2

Cited by 38 publications

(29 citation statements)

References 36 publications

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“…It is important to point out that in addition to the operation mode (continuous vs batch) and reaction time, there are other important variables that is necessary to investigate since they are predicted to affect the performance of the electro-Fenton reactor under study. Consistent with previous reports [22,23], the amount of iron loaded resin as well as the ionic strength of the solution needed to be considered; particularly because these parameters affect the retention and distribution of the pollutant and the Fe ionic species across the reactor, and would therefore affect its performance in an important fashion.…”

Section: Resultsmentioning

confidence: 73%

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Electrochemical degradation of triclosan in aqueous solution. A study of the performance of an electro-Fenton reactor

García‐Espinoza

Robles

Gil

et al. 2019

Journal of Environmental Chemical Engineering

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Section: Resultsmentioning

confidence: 73%

“…The cation exchange resin Amberlite on the other hand, was thoroughly washed with deionized water and then, partially exchanged with either FeSO 4 •7H 2 O or NaOH as previously reported [22,23]. The electrode carbon clothes were rinsed with deionized water, immersed in diluted HNO 3 for 8 h and rinsed with deionized water.…”

Section: Methodsmentioning

confidence: 99%

Electrochemical degradation of triclosan in aqueous solution. A study of the performance of an electro-Fenton reactor

García‐Espinoza

Robles

Gil

et al. 2019

Journal of Environmental Chemical Engineering

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“…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.…”

Section: Future Trends and Perspectivesmentioning

confidence: 99%

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

et al. 2021

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Disinfection is usually the final step in water treatment and its effectiveness is of paramount importance in ensuring public health. Chlorination, ultraviolet (UV) irradiation and ozone (O 3 ) are currently the most common methods for water disinfection; however, the generation of toxic by-products and the non-remnant effect of UV and O 3 still constitute major drawbacks. Photo-assisted electrochemical advanced oxidation processes (EAOPs) on the other hand, appear as a potentially effective option for water disinfection. In these processes, the synergism between electrochemically produced active species and photo-generated radicals, improve their performance when compared with the corresponding separate processes and with other physical or chemical approaches. In photo-assisted EAOPs the inactivation of pathogens takes place by means of mechanisms that occur at different distances from the anode, that is: (i) directly at the electrode’s surface (direct oxidation), (ii) at the anode’s vicinity by means of electrochemically generated hydroxyl radical species (quasi-direct), (iii) or at the bulk solution (away from the electrode surface) by photo-electrogenerated active species (indirect oxidation). This review addresses state of the art reports concerning the inactivation of pathogens in water by means of photo-assisted EAOPs such as photo-electrocatalytic process, photo-assisted electrochemical oxidation, photo-electrocoagulation and cathodic processes. By focusing on the oxidation mechanism, it was found that while quasi-direct oxidation is the preponderant inactivation mechanism, the photo-electrocatalytic process using semiconductor materials is the most studied method as revealed by numerous reports in the literature. Advantages, disadvantages, trends and perspectives for water disinfection in photo-assisted EAOPs are also analyzed in this work.

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“…When performing thermal desorption, a large amount of energy is consumed and a post-treatment of the contaminated gas stream is still required. Degradation of target pollutants can be achieved by heating at high temperature under oxidizing conditions, but such treatment usually reduce the potential for AC reuse because of a strong decrease of specific surface area and adsorption capacity [85,86]. Therefore, alternative regeneration processes are currently investigated, such as biological treatments [87,88], microwave irradiation [70,89],…”

Section: Ii4 -Adsorptionmentioning

confidence: 99%

Remediation of soils contaminated by hydrophobic organic compounds: How to recover extracting agents from soil washing solutions?

Trellu

Péchaud

Oturan

et al. 2021

Journal of Hazardous Materials

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A lot of soil (particularly, former industrial and military sites) has been contaminated by various highly toxic contaminants such as petroleum hydrocarbons, polycyclic aromatic hydrocarbons (PAHs), polychlorobiphenyls (PCBs) or chlorinated solvents. Soil remediation is now required for their promotion into new industrial or real estate activities. Therefore, the soil washing (SW) process enhanced by the use of extracting agents (EAs) such as surfactants or cyclodextrins (CDs) has been developed for the removal of hydrophobic organic compounds (HOCs) from contaminated soils. The use of extracting agents allows improving the transfer of HOCs from the soil-sorbed fraction to the washing solution. However, using large amount of extracting agents is also a critical drawback for cost-effectiveness of the SW process. The aim of this review is to examine how extracting agents might be recovered from SW solutions for reuse.Various separation processes are able to recover large amounts of extracting agents according to the physicochemical characteristics of target pollutants and extracting agents. However, an additional treatment step is required for the degradation of recovered pollutants. SW solutions

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Cathodic polarization effect on the electro-Fenton regeneration of activated carbon

Cited by 38 publications

References 36 publications

Electrochemical degradation of triclosan in aqueous solution. A study of the performance of an electro-Fenton reactor

Electrochemical degradation of triclosan in aqueous solution. A study of the performance of an electro-Fenton reactor

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

Remediation of soils contaminated by hydrophobic organic compounds: How to recover extracting agents from soil washing solutions?

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