Effect of electrode oxide film in micro arc oxidation on water treatment
-
Zhiyu Yan
,
Manting Men
Abstract
This study investigated the characteristics of liquid phase plasma-electrode catalysis system formed by micro-arc oxidation with titanium-aluminum (Ti-Al) alloy as the anode. Under different power supplies, the wastewater from printing and textile dyeing industries simulated with Rhodamine B (RhB) dye was decolored. We evaluated the impact of oxide film formed on the electrodes on the plasma effects. Our findings showed that repeated applications of opposite voltages could damage the insulating oxide film formed on the electrode surface, contributing to its breakdown and enhancing micro-arc oxidation. Intermittent power supply also modulated the coverage of oxide film by enhancing the cooling of electrolyte. Morphological study of oxide film revealed the presences of rutile and anatase titanium dioxide (TiO2) in the oxide film, which is conducive to various catalytic functions in the plasma environment.
Funding statement: The authors would like to thank National Natural Science Foundation of China (11675031) for their support of this research.
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Artikel in diesem Heft
- Editorial: The importance of advanced oxidation processes in degrading persistent pollutants
- An overview on heterogeneous Fenton and photoFenton reactions using zerovalent iron materials
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- The treatment of aniline in aqueous solutions by gamma irradiation
- Microwave regeneration of biological activated carbon
- Molecular iodine/aqueous NH4OAc: a green reaction system for direct oxidative synthesis of nitriles from amines
- Catalytic Degradation of Safranin T in Aqueous Medium Using Non-conventional Processes
- Oxidation of 1, 2-dichlorobenzene on a commercial V2O5-WO3/nano-TiO2 catalyst: Effect of HCl addition
- Current conduction mechanisms in thermal nitride and dry gate oxide grown on 4H-silicon carbide (SiC)
- Effect of light and oxygen on repetitive bacterial inactivation on uniform, adhesive, robust and stable Cu-polyester surfaces
- Wet oxidation of an industrial high concentration pharmaceutical wastewater using hydrogen peroxide as an oxidant
- Oxidation characteristics of heavy crude oil in ignition process
- Comparative studies on the performance of porous Ti/Sno2-Sb2O3/Pbo2 enhanced by CNT and Bi Co-doped electrodes for methyl orange oxidation
- Application of photocatalytic paint for destruction of benzo[a]pyrene. Impact of air humidity
- Spray-drying synthesis and characterization of Li4Ti5O12 anode material for lithium ion batteries
- Kinetics analysis of photocatalytic degradation of Acid Orange 7 by Co/N/Er3+: Y3Al5O12/TiO2 films
- Reaction characteristics of oxygen generation from plate-like potassium superoxide within a confined space
- Electrochemical reduction of CO2 on a Cu2O/polyaniline /stainless steel based electrode
- Role of oxygen-containing functional surface groups of activated carbons on the elimination of 2-hydroxybenzothiazole from waters in A hybrid heterogeneous ozonation system
- The degradation efficiency and mechanism of meclofenamic acid in aqueous solution by UV irradiation
- Effect of electrode oxide film in micro arc oxidation on water treatment
- Photocurrent response and photocatalytic activity of Nd-doped TiO2 thin films prepared by sol-gel method
- Mathematical model involving chemical reaction and mass transfer for the ozonation of dimethyl phthalate in water in a bubble column reactor
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- Selective Fenton-like catalytic oxidation of acid orange II on inorganic heterogeneous molecular imprinted catalysts
- Decoloration of azo dye methyl orange by a novel electro-Fenton internal circulation batch reactor
