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What Anodes are Used for Electrocoagulation? Fe anode and Al anode are typically used for electro-coagulation processes, as their anodic dissolution products, Fe(OH)3 and Al(OH)3, can adsorb the suspended solids in the wastewater. The in situ generation of the coagulant has the advantages of simple equipment and less handling of chemicals. Moreover, since these coagulants have low solubility, so they can be easily removed from the treated water. Fe → Fe2+ + 2e-   Al → Al3+ + 2e-  The dissolution reaction

What is On-site Production of Hypochlorite? The on-site hypochlorite production technology is that chlorine is produced within an electrolytic cell. The cell is not separate into 2 regions by a membrane, and is more simple to operate and maintain. The chlorine produced at the anode will remain in solution and mix with the sodium hydroxide produced at the cathode, giving sodium hypochlorite. Although this is a less efficient system when compared to a membrane cell, it does not have the maintenance problems associated with th

DSA Titanium Anode and Lead Anode, Which is Better for Copper Electrowinning? The traditional anodes of choice in the electrowinning industry have been lead based anodes. However, these anodes display high energy consumption and low corrosion resistance during operation. These problems led to the investigation of other anode materials such as dimensionally stable anodes (DSAs), consisting of mixed metal oxide coatings on titanium substrates. In electrowinning tests, copper deposits from the lead anode cell showed the p

Comparison of Lead Alloy Anode and DSA Titanium Anodes in Metal Electrowinning Lead alloys are not dimensionally stable, since they slowly dissolve in electrolytes, leading to problems such as changes in the gap between the anode and cathode and product contamination by lead. Dimensionally stable anodes have brought considerable improvements to the field of electrowinning which includes: (i) lower half-cell potential, (ii) use of higher current densities, (iii) lower gas bubble effect through special anode de