Effect of the anode materials on the efficiency of the electro-Fenton process for the mineralization of the antibiotic sulfamethazine

Sopaj, Flamur; Oturan, Nihal; Pinson, Jean; Podvorica, Fetah I.; Oturan, Mehmet A.

doi:10.1016/j.apcatb.2016.06.035

Cited by 222 publications

(63 citation statements)

References 59 publications

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“…The higher value of the current intensity (200 mA) has a detrimental effect on the pollutant removal (78%). This is probably the result of parasitic reactions such as H 2 and O 2 evolution (Equations and ) and generation of H 2 O from hydrogen peroxide (Equation ) . When the high values of current were applied, the electrogenerated H 2 O 2 plays the scavenger role for hydroxyl radical ( ● OH) and provides hydroperoxyl radical (HO ● 2 ).…”

Section: Resultsmentioning

confidence: 99%

Efficient Fe/CuFeO₂/rGO nanocomposite catalyst for electro‐Fenton degradation of organic pollutant: Preparation, characterization and optimization

Nazari

Setayesh

2019

Applied Organom Chemis

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The nanocomposite of zero‐valent iron and delafossite CuFeO2 supported on reduced graphene oxide was synthesized for the first time to evaluate its performance as the heterogeneous catalyst toward electro‐Fenton (EF) removal of catechol. X‐ray diffraction, Fourier transform‐infrared, scanning electron microscopy and Brunauer–Emmett–Teller (BET) were used to characterize the nanocomposite. It was found that the rhombohedral structure of CuFeO2 remained stable during the nanocomposite preparation. The BET surface area of the nanocomposite increased about 102 times in comparison with bare CuFeO2. The influence of the operating parameters was investigated. The optimum operating conditions were pH 3, Fe/CuFeO2/rGO: 1 g/l; catechol: 7.5 × 10−4 mol/l; and I: 150 mA, which led to 99% and 78.4% catechol and chemical oxygen demand removal in 120 min, respectively. The stability of the catalyst by leaching measurements was studied. Only 2% and 3.1% of iron and copper, respectively, was leached in the solution. The obtained results introduced Fe/CuFeO2/rGO as a stable and appropriate catalyst for removal of organic compounds by the EF process. It was inferred from the scavenger utilization that hydroxyl radical plays a major role in catechol elimination and EF reaction followed by the Haber–Weiss mechanism at optimum conditions. The gas chromatography–mass spectrometry analysis was performed to detect the intermediate products, and an acceptable degradation pathway was proposed. The EF degradation of catechol follows a pseudo‐first‐order kinetics model with a rate constant of 3.69 × 10−2 min−1 for the optimum operating conditions. The reusability of Fe/CuFeO2/rGO was investigated for six cycles, and the catalytic efficiency almost remained.

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Section: Resultsmentioning

confidence: 99%

Efficient Fe/CuFeO₂/rGO nanocomposite catalyst for electro‐Fenton degradation of organic pollutant: Preparation, characterization and optimization

Nazari

Setayesh

2019

Applied Organom Chemis

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“…[35,146,173] Figure 5 shows clearly the effect of current on decay kinetics and mineralization rate during electro-Fenton treatment of 0.2 mM (57.5 mg L À 1 ) sulfamethazine (SMT) solution using BDD anode. [174] Oxidative degradation of SMT is enhanced by increasing current from 2.08 to 12.5 mA cm À 2 . The complete oxidation of 0.2 mM SMT needs only 12 min at 12.5 mA cm À 2 current density while further increase does not provide improvement in decay rate of SMT.…”

Section: Electro-fenton Processmentioning

confidence: 96%

“…Figure shows clearly the effect of current on decay kinetics and mineralization rate during electro‐Fenton treatment of 0.2 mM (57.5 mg L −1 ) sulfamethazine (SMT) solution using BDD anode . Oxidative degradation of SMT is enhanced by increasing current from 2.08 to 12.5 mA cm −2 .…”

Section: Applications Of Bdd In Water and Wastewater Treatmentmentioning

confidence: 99%

Environmental Applications of Boron‐Doped Diamond Electrodes: 1. Applications in Water and Wastewater Treatment

Nidheesh

Divyapriya

Oturan³

et al. 2019

ChemElectroChem

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133

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Over the past few decades, environmental applications of the boron‐doped diamond (BDD) electrode are reported to be vast and versatile. Applications of BDD electrodes in the field of electrochemical advanced oxidation processes (EAOPs) for the abatement of toxic persistent organic pollutants are significant, owing to the easy and effective way of treatment. This article focuses on highlighting and summarizing the applications of the BDD electrode for the treatment of different synthetic and real wastewaters, such as those involved in pharmaceuticals and personal care products, pesticides/herbicides, dyes, etc. We also review the processes and methodologies involving the synthesis of BDD electrodes and summarize the desirable characteristic features required for the application of EAOPs. Applications of BDD electrodes for the treatment of wastewater through different EAOPs, including anodic oxidation, electro‐Fenton, coupling processes such as electro‐Fenton pyrite, bioelectro‐Fenton, and their recent advancements are also discussed in detail. It envisages the greater potential for complete treatment of different toxic wastewater effluents. This Review shows that the application of BDD electrodes in the field of wastewater treatment is tremendous and proves to be a promising material for future perspectives.

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“…[19,21,37,38] Recent advances on the application of EF and PEF processes have demonstrated the superiority of BDD over other anodes (Pt and DSA®) for the removal of drugs. [23,[39][40][41][42] This work aims to assess the oxidation power of PEF with a BDD anode and air-diffusion cathode to degrade and mineralize 4-AA. The drug was spiked into pure water or a municipal secondary effluent, always in the presence of 0.050 M Na 2 SO 4 as supporting electrolyte to ensure high conductivity.…”

Section: Introductionmentioning

confidence: 99%

Assessment of 4‐Aminoantipyrine Degradation and Mineralization by Photoelectro‐Fenton with a Boron‐Doped Diamond Anode: Optimization, Treatment in Municipal Secondary Effluent, and Toxicity

et al. 2019

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a] 4-Aminoantipyrine (4-AA), a persistent metabolite of dipyrone found in natural water, has been treated in 100 mL of aqueous 0.050 M Na 2 SO 4 solutions at pH 3.0 by photoelectro-Fenton (PEF) with a 4 W UVA lamp. The assays were performed in a cell equipped with a boron-doped diamond (BDD) anode and an air-diffusion cathode for H 2 O 2 generation. The formation of an unstable Fe(III)-4-AA complex with 1 : 2 molar ratio was evidenced. A 2 4 central composite design was used to assess the effect of four independent variables on PEF performance.The optimized conditions for 62.5 mg L À 1 4-AA were: current density of 77.5 mA cm À 2 and 47.75 mg L À 1 Fe 2 + , yielding 99 % 4-AA degradation at 7 min, and 45 % 4-AA mineralization with 3.2 % mineralization current efficiency at 130 min. Slightly slower degradation and similar mineralization were obtained under these conditions when 4-AA was spiked into a municipal secondary effluent, showing a low influence of natural organic matter on PEF. The initially high acute toxicity determined using Artemia salina was largely diminished upon PEF treatment.

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Effect of the anode materials on the efficiency of the electro-Fenton process for the mineralization of the antibiotic sulfamethazine

Cited by 222 publications

References 59 publications

Efficient Fe/CuFeO₂/rGO nanocomposite catalyst for electro‐Fenton degradation of organic pollutant: Preparation, characterization and optimization

Efficient Fe/CuFeO₂/rGO nanocomposite catalyst for electro‐Fenton degradation of organic pollutant: Preparation, characterization and optimization

Environmental Applications of Boron‐Doped Diamond Electrodes: 1. Applications in Water and Wastewater Treatment

Assessment of 4‐Aminoantipyrine Degradation and Mineralization by Photoelectro‐Fenton with a Boron‐Doped Diamond Anode: Optimization, Treatment in Municipal Secondary Effluent, and Toxicity

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Effect of the anode materials on the efficiency of the electro-Fenton process for the mineralization of the antibiotic sulfamethazine

Cited by 222 publications

References 59 publications

Efficient Fe/CuFeO2/rGO nanocomposite catalyst for electro‐Fenton degradation of organic pollutant: Preparation, characterization and optimization

Efficient Fe/CuFeO2/rGO nanocomposite catalyst for electro‐Fenton degradation of organic pollutant: Preparation, characterization and optimization

Environmental Applications of Boron‐Doped Diamond Electrodes: 1. Applications in Water and Wastewater Treatment

Assessment of 4‐Aminoantipyrine Degradation and Mineralization by Photoelectro‐Fenton with a Boron‐Doped Diamond Anode: Optimization, Treatment in Municipal Secondary Effluent, and Toxicity

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Efficient Fe/CuFeO₂/rGO nanocomposite catalyst for electro‐Fenton degradation of organic pollutant: Preparation, characterization and optimization

Efficient Fe/CuFeO₂/rGO nanocomposite catalyst for electro‐Fenton degradation of organic pollutant: Preparation, characterization and optimization