Combined Electro-Fenton and Anodic Oxidation Processes at a Sub-Stoichiometric Titanium Oxide (Ti4O7) Ceramic Electrode for the Degradation of Tetracycline in Water

Zwane, Busisiwe N.; Orimolade, Benjamin O.; Koiki, Babatunde A.; Mabuba, Nonhlangabezo; Gomri, Chaimaa; Petit, Eddy; Bonniol, Valérie; Lesage, Geoffroy; Rivallin, Matthieu; Cretin, Marc; Arotiba, Omotayo A.

doi:10.3390/w13192772

Cited by 23 publications

(6 citation statements)

References 30 publications

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“…In total, 6.25 million tons of dry solids were created in 2013 in China, where the total volume of sludge increased by an average annual growth rate of 13%. More than 80% of the sludge was dumped, with a tiny fraction being disposed of through sanitary landfills [ 54 ]. Sludge has been utilized widely as a fertilizer for the land up to now [ 55 ].…”

Section: Distribution Of Tc Pollutionmentioning

confidence: 99%

The Source and Distribution of Tetracycline Antibiotics in China: A Review

Chang

Mao

Qiu

et al. 2023

Toxics

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In recent years, antibiotics have been listed as a new class of environmental pollutants. Tetracycline antibiotics (TCs) used in human medical treatment, animal husbandry and agricultural production are the most widely used antibiotics. Due to their wide range of activities and low cost, their annual consumption is increasing. TCs cannot be completely metabolized by humans and animals. They can be abused or overused, causing the continuous accumulation of TCs in the ecological environment and potential negative effects on non-target organisms. These TCs may spread into the food chain and pose a serious threat to human health and the ecology. Based on the Chinese environment, the residues of TCs in feces, sewage, sludge, soil and water were comprehensively summarized, as well as the potential transmission capacity of air. This paper collected the concentrations of TCs in different media in the Chinese environment, contributing to the collection of a TC pollutant database in China, and facilitating the monitoring and treatment of pollutants in the future.

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Section: Distribution Of Tc Pollutionmentioning

confidence: 99%

The Source and Distribution of Tetracycline Antibiotics in China: A Review

Chang

Mao

Qiu

et al. 2023

Toxics

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“…The degradation mechanism was direct electrochemical oxidation induced by •OH and the indirect electrooxidation of Cl -/ClOintermediates. Zwane et al [109] also used electro-Fenton (EF)-, anodic oxidation (AO)-, and electro-Fenton-combined anodic oxidation (EF/AO) to degrade tetracycline on the titanium suboxides (Ti 4 O 7 ) layer (anode) deposited on carbon felt (cathode)/titanium substrate. The EF/AO coupling system had the highest pollutant removal efficiency compared with EF and AO.…”

Section: Coupling Technology Of Titanium Sub-oxides Anodic Electrocat...mentioning

confidence: 99%

Progress in Preparation and Application of Titanium Sub-Oxides Electrode in Electrocatalytic Degradation for Wastewater Treatment

Guo

et al. 2022

Catalysts

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To achieve low-carbon and sustainable development it is imperative to explore water treatment technologies in a carbon-neutral model. Because of its advantages of high efficiency, low consumption, and no secondary pollution, electrocatalytic oxidation technology has attracted increasing attention in tackling the challenges of organic wastewater treatment. The performance of an electrocatalytic oxidation system depends mainly on the properties of electrodes materials. Compared with the instability of graphite electrodes, the high expenditure of noble metal electrodes and boron-doped diamond electrodes, and the hidden dangers of titanium-based metal oxide electrodes, a titanium sub-oxide material has been characterized as an ideal choice of anode material due to its unique crystal and electronic structure, including high conductivity, decent catalytic activity, intense physical and chemical stability, corrosion resistance, low cost, and long service life, etc. This paper systematically reviews the electrode preparation technology of Magnéli phase titanium sub-oxide and its research progress in the electrochemical advanced oxidation treatment of organic wastewater in recent years, with technical difficulties highlighted. Future research directions are further proposed in process optimization, material modification, and application expansion. It is worth noting that Magnéli phase titanium sub-oxides have played very important roles in organic degradation. There is no doubt that titanium sub-oxides will become indispensable materials in the future.

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“…The advantages of heterogeneous EF have motivated research into various ways to improve the process. Some areas of interest include enhancing the production of hydrogen peroxide or hydroxyl radicals, , coupling of EF with other methods, , the type of iron source (nanoparticles), , catalyst loading, and the type of electrode used. − Toward enhancing hydrogen peroxide production, the use of electrocatalysts such as fluorine-modified carbon nanotubes for the electrochemical reduction oxygen has been reported . Choice of electrodes, especially the cathode, is of interest because it can be used as a support for the iron catalyst.…”

Section: Introductionmentioning

confidence: 99%

Improved Magnetite Nanoparticle Immobilization on a Carbon Felt Cathode in the Heterogeneous Electro-Fenton Degradation of Aspirin in Wastewater

Muzenda

Arotiba

2022

ACS Omega

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Toward the improvement of the application of heterogeneous electro-Fenton in water treatment, we report a new strategy of enhancing the immobilization of a magnetite nanoparticle catalyst on a carbon felt cathode. Exploiting the intrinsic ferrimagnetic properties of magnetite nanoparticles, magnet bars were used to attach the magnetite into the void spaces of the porous carbon felt (CF) cathode. The magnetite nanoparticles were prepared by coprecipitation with variations in the molar ratios of Fe 2+ /Fe 3+ . The magnetite was characterized, attached onto the CF electrode with magnetic bars, and used in the heterogeneous electro-Fenton (EF) degradation of aspirin. The effects of the following on the degradation were studied: Fe 2+ /Fe 3+ , pH, catalyst loading concentration, and voltage. The heterogeneous EF degradation of aspirin in wastewater improved by 23% when magnetic bars were used to enhance the immobilization of the magnetite catalysts. The 1:4 Fe 2+ /Fe 3+ ratio resulted in the highest hetero-EF catalytic degradation of aspirin with complete degradation (100%) achieved after 140 min. For a mixture of pharmaceuticals, degradation percentages of 94.3% (aspirin), 88% (ciprofloxacin), and 80% (paracetamol) in 3 h were obtained. The magnetized magnetite on the cathode was reusable for 10 cycles. Thus, the use of magnets shows a promising strategy to avoid the leaching of ferrimagnetic nanoparticle catalysts embedded in the cathode for heterogeneous EF processes.

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Combined Electro-Fenton and Anodic Oxidation Processes at a Sub-Stoichiometric Titanium Oxide (Ti4O7) Ceramic Electrode for the Degradation of Tetracycline in Water

Cited by 23 publications

References 30 publications

The Source and Distribution of Tetracycline Antibiotics in China: A Review

The Source and Distribution of Tetracycline Antibiotics in China: A Review

Progress in Preparation and Application of Titanium Sub-Oxides Electrode in Electrocatalytic Degradation for Wastewater Treatment

Improved Magnetite Nanoparticle Immobilization on a Carbon Felt Cathode in the Heterogeneous Electro-Fenton Degradation of Aspirin in Wastewater

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