An electro-Fenton system using magnetite coated metallic foams as cathode for dye degradation

May, Thi; Byun, Ji Young; Kim, Sang Hoon

doi:10.1016/j.cattod.2017.05.016

Cited by 56 publications

(7 citation statements)

References 32 publications

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“…They can also be employed as filters for hightemperature gas and fluids [4]. Magnetite wash-coated metal foams were found to be an effective cathode for electro-Fenton systems for removing dyes in wastewater [5][6][7] because when employed as conducting and porous catalyst supports, they maximize the reaction efficiency by increasing the exposed surface area of the cathode and minimize mass transport limitations.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Investigation of Fluid Flow through Zinc Open-Cell Foams Produced by the Excess Salt Replication Process and Suitable as a Catalyst in Wastewater Treatment

Hassein-Bey

Belhadj

Tahraoui

et al. 2023

Water

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The “excess salt replication process” is a new simple method of fabrication of open-cell metal foam based on the commonly known salt replication method. Porous materials with porosity between 46% and 66% result when the employed alloy is 25% antimonial lead alloy and when it is 58% to 65% zamak 5. These foams are proposed as structured catalysts instead of packed beds in the treatment of wastewater. The local regimes influencing macroscopic air flow behaviour through these foams are delimited and boundaries are analysed in terms of sample length. Most of the experimental tests in this work exhibited a general trend of air flow in ESR foams dominated by the “strong inertia regime”. It was established that the law governing the unidirectional air flow through these foams was the full cubic law. The permeability and inertia coefficient of five samples with a cell diameter between 2.5 and 4.5 mm were calculated, and an empirical correlation was fitted. The irregular cuboid shape of salt grains used in the ESR foam was the origin of the special cell form of ESR foams leading to an anisotropic ordered porous media. This can explain the macroscopic turbulence of air flow because there were many dead zones present in the corner of each cubic cell, thus causing kinetic energy loss starting at earlier regimes.

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Section: Introductionmentioning

confidence: 99%

“…Furthermore, the foams could be easily lifted up from the treated water, leaving no sludge and no magnetite powder in the solution after wastewater treatment [5].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Fluid Flow through Zinc Open-Cell Foams Produced by the Excess Salt Replication Process and Suitable as a Catalyst in Wastewater Treatment

Hassein-Bey

Belhadj

Tahraoui

et al. 2023

Water

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“…They are oxidized by generation of highly oxidant radicals in situ such as hydroxyl radicals (E 0 = 2.8 V) [12]. Fenton and electro Fenton techniques have been applied by investigators around the world [13][14][15][16][17]. Thus, basic principle of electro Fenton process is the reaction between the continuous electro generation of hydrogen peroxide H 2 O 2 and reduction of oxygen O 2 on the cathode (Eq.…”

Section: Introductionmentioning

confidence: 99%

Degradation and Mineralization Study of Promecarb by Electro Fenton Process

Bakhti¹,

Hamida²,

Hauchard³

2022

SJAC

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Organic substances as pesticides, especially aromatic compounds are a major environmental concern. In the present work, solutions of Promecarb or 3-isopropyl-5-methylphenyl-N-methylcarbamate of pH = 3 have been degraded by electro Fenton process, using a volumic electrochemical reactor filled with carbon graphite. Effects of nature of material of cathode, initial concentration of insecticide and applied current on the kinetics of oxidative degradation and mineralization efficiency have been investigated. Kinetic analysis showed that the oxidation of Promecarb by hydroxyl radicals follows a reaction kinetic of pseudo first order. The absolute rate constant for Promecarb oxidation by hydroxyl radicals was determined as 10.88 × 10 9 L mol -1 s -1 by competitive kinetics method and benzoic acid was used as reference compound. Mineralization of this pesticide by hydroxyl radicals consists in its transformation to mineral products. The evolution of the mineralization during Promecarb treatment by electro Fenton process was followed by analysis of Total Organic Carbon TOC. Thus, after 3 hours of electrolysis and at I = 800 mA, more than 50% of the organic carbon present in the solution is mineralized. Several degradation products were formed during its electro Fenton treatment. These intermediates were identified using High Performance Liquid Chromatography HPLC, Ionic Chromatography IC and Liquid Chromatography -Mass Spectrometry LC-MS. Based on identification of aromatic intermediates and carboxylic acids, a plausible Promecarb mineralization pathway is proposed. Also, we realized the measurement of the Biochemical Oxygen Demand BOD 5 of insecticide solution after treatment by electro Fenton process, to evaluate its biodegradability.

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“…The electro-Fenton's processing is a part of electrochemical advanced oxidation processes (EAOPs) technology. The EAOP process itself pertains to the advanced oxidation processes (AOPs) developed mostly over the last decade by using clean, efficient, and economical processing in removing pollutants in water [6][7][8]. On the other hand, EAOPs form a group of emerging technologies, where pollutant removal is based on the Fenton's chemical reaction.…”

Section: Introductionmentioning

confidence: 99%

Decolorization of industrial wastewater using electrochemical peroxidation process

Marlina

Purwanto

Sudarno

2021

J. Electrochem. Sci. Eng.

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In this study, decolorization of wastewater samples taken from the paper industry is investigated using electrochemical peroxidation process. The electrochemical peroxidation process is a part of electrochemical advanced oxidation processes, which is based on the Fenton’s chemical reaction, provided by addition of external H2O2 into reaction cell. In this study, iron is used as anode and graphite as cathode put at the fixed distance of 30 mm in a glass reaction cell. The cell was filled with the solution containing wastewater and sodium chloride as the supporting electrolyte. Factors of the process such as pH, current intensity, hydrogen peroxide concentration, and time of treatment were studied. The results illustrate that all these parameters affect efficiencies of dye removal and chemical oxygen demand (COD) reducing. The maximal removal of wastewater contaminants was achieved under acid (pH 3) condition, with the applied current of 1 A, and hydrogen peroxide concentration of 0.033 M. At these conditions, decolorization process efficiency reached 100 and 83 % of COD removal after 40 minutes of wastewater sample treatment. In addition, the electrical energy consumption for wastewater treatment by electrochemical peroxidation is calculated, showing increase as the current intensity of treatment process was increased. The obtained results suggest that electrochemical peroxidation process can be used for removing dye compounds and chemical oxygen demand (COD) from industrial wastewaters with high removal efficiency.

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An electro-Fenton system using magnetite coated metallic foams as cathode for dye degradation

Cited by 56 publications

References 32 publications

Experimental Investigation of Fluid Flow through Zinc Open-Cell Foams Produced by the Excess Salt Replication Process and Suitable as a Catalyst in Wastewater Treatment

Experimental Investigation of Fluid Flow through Zinc Open-Cell Foams Produced by the Excess Salt Replication Process and Suitable as a Catalyst in Wastewater Treatment

Degradation and Mineralization Study of Promecarb by Electro Fenton Process

Decolorization of industrial wastewater using electrochemical peroxidation process

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