Electro-Fenton treatment of real pharmaceutical wastewater paired with a BDD anode: Reaction mechanisms and respective contribution of homogeneous and heterogeneous  OH

Olvera‐Vargas, Hugo; Gore-Datar, Nissim; García-Rodríguez, Orlando; Mutnuri, Srikanth; Lefebvre, Olivier

doi:10.1016/j.cej.2020.126524

Cited by 173 publications

(43 citation statements)

References 63 publications

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“…Among advanced oxidation processes, electrochemical ones (EAOPs) appear highly promising, illustrated by the increase of scientific publications related to this class of processes [9], as it is the case for the change electro-Fenton process, which is also largely applied for the degradation of antibiotics [10][11][12]. Olvera-Vargas applied this process on real pharmaceutical wastewater paired with a BDD anode and showed an improvement of the biodegradability of refractory wastewater [13]. Several current studies are based on the development of novel materials specifically bio-inspired and biomaterials [14].…”

Section: Introductionmentioning

confidence: 99%

A novel system coupling an electro-Fenton process and an advanced biological process to remove a pharmaceutical compound, metronidazole

Aboudalle

Djelal

Domergue

et al. 2021

Journal of Hazardous Materials

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The objective of this study was to improve the mineralization of metronidazole, a recalcitrant antibiotic by the development of a new combined process coupling electro-Fenton and a biological process. For biotreatment, various strategies were considered bioaugmentation, bioacclimatation and biostimulation alone or combined. So, the novelty of this strategy is to combine advanced oxidation process with advanced biological process. The conventional biotreatment with activated sludge after 120 h of culture, led to 58.1 % mineralization; whereas the pure isolated strains, from activated sludge culture in the presence of metronidazole by-products, identified as Pseudomonas putida (strain A) and Achromobacter sp (strain B), led to 37.2 and 40.1 % respectively. After original acclimation of the isolated strains to electrolysis by-products, the mineralization levels reached 75.6 % and 72.9 % for strains A and B respectively after 120 h of culture. The results showed that the mineralization of metronidazole by-products was the most important in the case of the combination of autochthonous bioaugmentation and biostimulation, with 96.1 % after 120 h of treatment. By coupling the two processes, the global treatment reached therefore a mineralization yield of 97 % with a reduction in processing time of 16 days compared to previous conventional biological treatment.

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Section: Introductionmentioning

confidence: 99%

A novel system coupling an electro-Fenton process and an advanced biological process to remove a pharmaceutical compound, metronidazole

Aboudalle

Djelal

Domergue

et al. 2021

Journal of Hazardous Materials

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“…Additionally, conventional disinfection treatments with chlorine or other halogens were found to generate disinfection by-products, which can exhibit a mutagenic and carcinogenic character [3,25]. Therefore, effluents from domestic WW treatment plants (WWTPs), or WW with comparable physicochemical and biological characteristics, are considered as potential contributors of ECs to natural environments [27][28][29]. In this regard, the implementation of innovative and efficient treatment technologies is required to make this type of effluents suitable for discharge or reuse [6].…”

Section: Introductionmentioning

confidence: 99%

Advanced Oxidation Processes Based on Sulfate Radicals for Wastewater Treatment: Research Trends

Urán-Duque

Saldarriaga-Molina

Rubio-Clemente

2021

Water

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In this work, the recent trends in the application of the sulfate radical-based advanced oxidation processes (SR-AOPs) for the treatment of wastewater polluted with emerging contaminants (ECs) and pathogenic load were systematically studied due to the high oxidizing power ascribed to these technologies. Additionally, because of the economic benefits and the synergies presented in terms of efficiency in ECs degradation and pathogen inactivation, the combination of the referred to AOPs and conventional treatments, including biological processes, was covered. Finally, the barriers and limitations related to the implementation of SR-AOPs were described, highlighting the still scarce full-scale implementation and the high operating-costs associated, especially when solar energy cannot be used in the oxidation systems.

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“…Nowadays, three kinds of electrodes, namely tin dioxide (SnO 2 ) (Mora-Gomez et al 2019), lead dioxide (PbO 2 ) (Tan et al 2011) and boron-doped diamond (BDD) (Olvera-Vargas et al 2021) have attracted great attention from researchers because of high oxygen evolution potentials (OEP), which could favor the large production of reactive oxygen species to destroy organic matters (Skoumal et al 2008;Moradi et al 2020). BDD has proven to be the most potential material for anodic oxidation of organics (Olvera-Vargas et al 2021). However, the high cost of BDD restricts its widespread commercial applications (Brillas et al 2005;Ciríaco et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of highly active Ti/Sb-SnO2 electrode by sol-gel spinning technique for landfill leachate treatment

Zhang

et al. 2021

Water Science and Technology

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Highly active Ti/Sb–SnO2 electrodes were fabricated using sol-gel spin coating procedure, which exhibited a rough, uniform and multilayer coating structure. The effects of different Sb-SnO2 film layers on the physiochemical, electrochemical properties and pollutant degradability of electrodes and the mechanism were evaluated on a systematic basis. The electrodes with more active layers exhibited higher electro-catalytic performance. Upon exceeding 8 layers, the promotion effect of the coating was reduced. Considering various factors, this paper recommends preparing Ti/Sb–SnO2 electrodes coated with 8 layers to obtain higher electro-catalytic ability in landfill leachate treatment. The specific number of coating layers should be determined according to the electrode requirements. This work provided a theoretical basis and technical support for the preparation of Ti-SnO2 electrodes with high electro-catalytic activity and stability, while it still remains a great challenge to achieve an excellent balance between performance and stability before Ti/Sb-SnO2 electrodes can be implemented on a large scale in wastewater treatment.

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Electro-Fenton treatment of real pharmaceutical wastewater paired with a BDD anode: Reaction mechanisms and respective contribution of homogeneous and heterogeneous OH

Cited by 173 publications

References 63 publications

A novel system coupling an electro-Fenton process and an advanced biological process to remove a pharmaceutical compound, metronidazole

A novel system coupling an electro-Fenton process and an advanced biological process to remove a pharmaceutical compound, metronidazole

Advanced Oxidation Processes Based on Sulfate Radicals for Wastewater Treatment: Research Trends

Facile synthesis of highly active Ti/Sb-SnO2 electrode by sol-gel spinning technique for landfill leachate treatment

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