Research Article
Evaluation of Efficacy of Anionic Surfactant Degradation in the Presence of Concomitant Impurities of Natural Waters
Table 5
The degree of destruction of organic contaminants during oxidation of river waters and model ABS solutions in them by various methods.
| | Water sample | Oxidation method | , min | , mg/(dm3·min) | Discoloration, % | ΔTOC, % | /ΔTOC, mg/mg |
| | Desna River (winter) | O3/UV | 20 | 0.9 | 87 | 28 | 6.1 | | O3/TiO2/UV | | 0.9 | 93 | 33 | 4.9 | | O2/TiO2/UV | | — | 50 | 5 | — |
| | ABS solution in Desna River water | O3/UV | 20 | 0.9 | 83 | 18 | 6.8 | | O3/TiO2/UV | | 0.9 | 88 | 26 | 5.5 | | O2/TiO2/UV | | — | 55 | 16 | — |
| | Dnieper River (winter) | O3 | | 2.0 | 75 | 14 | 12.8 | | O3/UV | 30 | 2.0 | 87 | 40 | 7.5 | | O3/TiO2/UV | | 2.0 | 91 | 47 | 6.0 | | O2/TiO2/UV | | — | 68 | 17 | — | | O2/UV | | — | 114 | 4 | — |
| | ABS solution in Dnieper River water | O3 | | 1.6 | 70 | 13 | 11.8 | | O3/UV | 30 | 1.3 | 91 | 29 | 4.8 | | O3/TiO2/UV | | 1.3 | 91 | 33 | 4.7 | | O2/TiO2/UV | | — | 62 | 26 | — | | O2/UV | | — | 108 | 2 | — |
| | Dnieper River (winter) | O3/TiO2/UV* | 30 | 3.7 | 97 | 70 | 7.9 | | O2/TiO2/UV* | | — | 74 | 27 | — |
| | Dnieper River (summer) | O3/UV** | 30 | 1.9 | 98 | 47 | 3.1 |
| | Desna River (summer) | O3/UV** | 30 | 1.9 | 97 | 53 | 3.2 |
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Note: * = 8 mW/cm2 (lamp DRB-15), ** = 2.72 mW/cm2 (lamp DRB-8).
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