Table 1
Electrodes used for the electrochemical oxidation of landfill leachates reported in the literature.
| Electrode type* | Advantages | Disadvantages | CRM content | References |
|---|---|---|---|---|
| Noble metal | Repeatability Stability |
Expensive material use Low mineralization efficiency |
High | Pt [3], Ti/Pt [4,5] |
| PbO2 | Cheap | Potential leaching of toxic corrosion products Poor performance |
Absent/Low | PbO2 [5] Ti/PbO2 [9–12] Ti/Pt/PbO2 [13,14] |
| SMO | Stability | Potential leaching of toxic corrosion products | Low | Ti/RuO2 [9,15] Ti/SnO2 [11] |
| MMO | Stability | Reproducibility Potential leaching of toxic corrosion products |
Medium/Low | Ti/SnO2-PdO-RuO2 [9] Ti/TiO2-RuO2-SnO2 [12] Ti/Pt/SnO2-Sb2O4 [13,14] Ti/IrO2-RuO2 [16] Ti/TiO2-IrO2-RuO2 [17] |
| a-C | Cheap | Electrode corrosion Low mineralization efficiency |
Absent | Graphite [5,9,18] Graphite/PVC [19] |
| BDD | High mineralization efficiency | Expensive setup | Low | [7,12–14,20–25] |
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