Table 3
Studies in which a material-based electrode investigation was performed for the electrochemical oxidation of landfill leachates.
| Reference | COD removal efficiency | N-NH4 removal efficiency | Note |
|---|---|---|---|
| Chiang et al. [10] | Ti/Sn-Pd-Ru > Ti/Ru-Ti > Ti/PbO2 > graphite | correlation between the COD removal efficiency and chlorine/hypochlorite production removal of ammonium was mainly due to the indirect oxidation effect of chlorine/hypochlorite |
|
| Cossu et al. [11] | Ti/PbO2 ≈ Ti/SnO2 | substantial differences did not arise when the anodic material was Ti/PbO2 or Ti/SnO2 | |
| Panizza et al. [12] | BDD > Ti/PbO2 > Ti/Ti-Ru-Sn | with the PbO2 anode, ammonium and colour were completely removed after 8 h; formation of intermediates complete COD, colour and ammonium removal with BDD |
|
| Fernandes et al. [13,14] | BDD ≈ Ti/Pt/PbO2 ≈ Ti/Pt/SnO2-Sb2O4 | Ti/Pt/PbO2 > BDD > Ti/Pt/SnO2-Sb2O4 | ammonium to nitrate conversion was higher in BDD than other metal oxides COD and N-NH4 removal rates increased with chloride ion concentration, |
| Fudala-Ksiazek [7] | BDD 10k ≈ BDD 5k ≈ BDD 0.5k | BDD 10k ≈ BDD 0.5k > BDD 5k | a decrease in the sp3/sp2 ratio of the applied BDD material resulted in the elevated removal efficiency of N-NH4 |
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