Reducing agent | E°, V | pH | Nitrogen conversion products | Other by-products | Process indicators |
---|---|---|---|---|---|
|
-2.30 | Alkaline | NH2, NO2- , N2 | Al.(OH)3 | - |
|
-0.037 | Acidic | NO2- | Fe3+ | - |
-0.771 | Alkaline | N2 | Fe2O3, OH- | - | |
|
-1.245 | Alkaline | NH3, NO2-, N2 | Zn(OH)2 | Catalysator |
|
+0.27 | Acidic | N2O, N2 | - | High pressure and temperature, Cl- ions |
|
-0.199 | Acidic | N2O, N2, NH3 | CO2 | Rh/C |
Acidic | N2 | CO2, H2 | High pressure and temperature | ||
|
+0.017 | Acidic | NH4+ | HCO3- | High pressure and temperature |
|
-0.05 | Acidic | N2O | - | - |
|
-1.05 | Alkaline | N2O | OH- | Cu2+ |
|
+0.771 | Acidic | NO, N2O, N2 | Fe3+ | - |
-0.56 | Alkaline | NH3 | Fe(OH)3, OH- | Cu2+, Ag+ |
no. | Type of anode | NaCl concentration in solution [g/dm3] | Initial nitrate-N concentration [g/dm3] | Final nitrate-N concentration [mg/dm3] | Reaction by-products | Effectiveness |
1 | Ti/Pt | 0.75 | 100 | 24.6 | ammonia | 75.4% |
2 | 1.00 | 100 | 23.8 | - | 76.2% | |
3 | Ti/IrO2 | 0.50 | 100 | 17.3 | ammonia | 82.7% |
4 | 0.75 | 100 | 22.6 | - | 77.4% |