Electrocatalytic oxidation anode
Coating: Mixed Metal Oxide (MMO)
Coating Structure: Dense and highly conductive catalytic layer
Custom made: Plate, Mesh, Tube, and Customed
Expected Lifespan: Engineered for reliable endurance in continuous service
Advantage:
High electrocatalytic activity
Strong corrosion resistance
Long service life
Dimensionally stable
Electrocatalytic Oxidation Anode
In the electrocatalytic oxidation treatment of industrial wastewater, the catalytic activity and durability of the anode determine the degradation efficiency of organic pollutants and the long-term operating cost of the system. Our Electrocatalytic Oxidation Anode at Baoji City ShenAo Metal Materials Co., Ltd. is designed specifically for the electrochemical advanced oxidation treatment of various refractory organic wastewaters. It uses Grade 1 or Grade 2 pure titanium as the substrate, with a noble metal oxide catalytic coating on the surface. In wastewater systems containing organics, salts, or complex compositions, the coating maintains stable electrocatalytic activity, achieving deep oxidative degradation of organic pollutants through strong oxidizing species such as hydroxyl radicals generated at the anode surface. The anode maintains a stable chemical state during operation, minimizing the risk of metal ion dissolution, making it a reliable electrode solution for industrial wastewater electrochemical advanced oxidation processes.
This product is for B2B Industrial Use Only. Operators should follow relevant chemical safety protocols and wastewater treatment operation standards.
Technical Specifications
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Substrate Material |
Grade 1/2 Pure Titanium |
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Coating Type |
Iridium-Tantalum (IrO₂-Ta₂O₅) or Boron-Doped Diamond (BDD), customized per wastewater system |
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Coating Thickness |
5–20 μm (adjusted based on current density and wastewater composition) |
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Coating Loading |
10–200 g/m² (customized for rated current density) |
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Current Density Range |
50–2,000 A/m² (adjusted based on treatment targets and wastewater conductivity) |
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Operating Voltage Window |
0.5 V–4.0 V (typical electrocatalytic oxidation potential range) |
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Anode Shapes |
Plate, Mesh, Tube, Perforated Plate, Custom |
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Applicable Wastewater |
High-COD organic wastewater, phenol-containing wastewater, pharmaceutical wastewater, textile dyeing wastewater, landfill leachate |
Product Advantages
- High Oxygen Evolution Overpotential Promoting Hydroxyl Radical Generation
The core of electrocatalytic oxidation technology lies in the generation of strongly oxidizing hydroxyl radicals (·OH) at the anode surface. Our iridium-tantalum coating possesses a high oxygen evolution overpotential, providing a wider potential window for hydroxyl radical generation before reaching the oxygen evolution potential. This means that when treating low-concentration organic pollutants, more current is directed toward the oxidation reaction rather than the oxygen evolution side reaction, contributing to improved current efficiency and reduced energy consumption. For applications requiring higher treatment depth, boron-doped diamond coatings can be selected for stronger oxidation capability. - Coating Solutions for Different Pollutant Types
Different industrial wastewaters vary significantly in organic pollutant structure and degradation difficulty. Wastewater containing aromatic pollutants such as phenols and dyes is preferably treated with iridium-tantalum coatings, balancing oxidation efficiency with service life. Wastewater containing highly stable organics such as antibiotics and endocrine disruptors can be treated with boron-doped diamond coatings for higher mineralization efficiency. We can recommend a matched coating solution based on your wastewater quality and effluent standards. - Chemical Stability in Complex Wastewater Environments
Industrial wastewater often contains acids, alkalis, salts, and various inorganic ions, exerting continuous chemical attack and physical erosion on electrode materials. Our coating formulation is optimized to maintain a low corrosion rate and good structural integrity in wastewater with wide pH fluctuations, high salinity, and complex compositions, making it suitable for long-term continuous operation of electrocatalytic oxidation treatment systems. - Flexible Modular Expansion
We can provide single or multiple anode modules in series-parallel combinations based on your treatment capacity and pollutant loading. Mesh and perforated plate anodes feature a high open area ratio, suitable for treating wastewater containing suspended solids; tubular anodes are suitable for flow-through reactors; plate anodes are suitable for immersion-type electrolytic cells. Whether for low-flow precision treatment or high-flow rapid treatment, processing capacity can be flexibly adjusted by adding or removing modules.
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Real-World Applications
- Water Treatment and Disinfection: Used for the electrocatalytic oxidation treatment of high-concentration refractory organic industrial wastewater, covering the deep degradation and mineralization of residual organic pollutants in pharmaceutical wastewater, textile dyeing wastewater, chemical wastewater, and landfill leachate.
- Industrial Wastewater Treatment: Used for the electrochemical advanced oxidation treatment of toxic and hazardous industrial wastewater containing phenols, aldehydes, alcohols, and halogenated organics, applicable to the compliance discharge or pretreatment of hard-to-treat wastewater from the fine chemical, pesticide, and petrochemical industries.
- Hydrometallurgy and Metal Recovery: Used for the decomplexing pretreatment of metallurgical wastewater containing cyanides and organic complexing agents, destroying the stable structure of metal-organic complexes through anodic oxidation to release metal ions for subsequent recovery or precipitation removal.
- Chlor-Alkali and Halogen Chemical Production: Used for the indirect electrocatalytic oxidation of saline organic wastewater, utilizing chloride ions in the wastewater to generate active chlorine at the anode for indirect oxidative degradation of organic pollutants, applicable to the comprehensive treatment of chloride-containing chemical wastewater.
The ShenAo Advantage
18 A long time of Fabricating Excellence
Since 2008, we've specialized in valuable metal coated titanium anodes from our office in Baoji's "China Titanium Valley." Our develop bimetallic hazardous welding innovation and progressed coating forms provide items you can trust.
Customization for Your Correct Needs
Every generation line is diverse. We give custom fitted arrangements coordinating your particular current thickness necessities, electrolyte composition, and operational parameters. Whether you require little bunch testing or full-scale generation amounts, we convey on time.
Cost-Effective Lifecycle Management
When coating exhaustion happens, you do not dispose of the whole anode. Our proficient recoating benefit strips the ancient oxide layer, sandblasts the substrate, and reapplies new MMO coating. This expands resource life and decreases your add up to taken a toll of proprietorship considerably.
Frequently Asked Questions
Q: How do I select the appropriate anode coating based on wastewater type?
A: It primarily depends on the type, concentration, and degradation target of organic pollutants in the wastewater. For wastewater containing aromatic pollutants such as phenols and dyes with moderate COD concentration, iridium-tantalum coatings offer a favorable balance between oxidation efficiency and service life. For applications involving recalcitrant organics such as antibiotics and polycyclic aromatic hydrocarbons, or requiring deep mineralization, boron-doped diamond coatings can be selected. For wastewater with higher chloride ion content, ruthenium-iridium coatings can be used, utilizing the active chlorine generated from chlorine evolution for indirect oxidation. You can provide your wastewater quality report, and our engineers will recommend a matched solution.
Q: What factors are related to the consumption rate of electrocatalytic oxidation anodes?
A: The consumption rate is primarily related to wastewater pH, operating current density, temperature, and fluoride ion concentration in the wastewater. Strongly acidic and fluoride-containing wastewater will accelerate coating consumption. We recommend providing a detailed wastewater composition analysis during the selection stage so we can assess coating compatibility and provide a service life estimate. Periodically monitoring cell voltage trends during operation helps anticipate coating condition.
Q: How should scaling or fouling on the anode surface be addressed?
A: Wastewater with high hardness or containing iron and manganese ions may form inorganic scale or metal oxide deposits on the anode surface. Mild scaling can be removed by dilute acid online circulation cleaning, while organic fouling can be addressed with dilute alkaline cleaning. We recommend incorporating an online cleaning connection during the system design phase and periodically inspecting the anode surface condition.
Q: How should anodes be handled when the coating reaches the end of its service life?
A: The titanium substrate remains stable in the electrocatalytic oxidation environment. The old coating can be chemically stripped, and once the substrate passes inspection, it can be recoated to restore performance to new-anode levels. We offer a full-service process including incoming inspection of used anodes, coating stripping, substrate treatment, and recoating.
Contact Us
You need a partner who not only supplies products but also solves your challenges alongside you. Our team is ready to engage with your inquiries and provide a tailored solution. Share your specific needs or key requirements with us today, and let us help you efficiently transform your breakthroughs into commercial value.
Titanium Anode Manufacturer
Email: zh@baojiti.com.cn
WhatsApp: +86-15877696471 (updated)
Products: Titanium Anodes, MMO Titanium Anodes, DSA Coated Titanium Electrodes, Electrolysis Electrodes, Hydrogen Production Electrodes, Wastewater Treatment Titanium Anodes.
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