Research Article
Evaluation of Efficacy of Anionic Surfactant Degradation in the Presence of Concomitant Impurities of Natural Waters
Table 4
Reduction of ABS concentration in the course of oxidation of its solutions in natural waters by various methods.
| Object of research | Oxidation method | , min | , mg/(dm3·min) | , mg/dm3 | , % | /, | EPh | SPh | EPh | SPh | mg/mg |
| Solution of ABS in Desna River water | — | 0 | — | 4.97 | — | — | — | — | O3/UV | 20 | 0.9 | 1.43 | — | 71 | — | 3.3 | O3/TiO2/UV | | 0.9 | 0.29 | — | 94 | — | 2.8 | O2/TiO2/UV | | — | 0.68 | — | 86 | — | — |
| Solution of ABS in Dnieper River water | — | 0 | — | 4.90 | 4.95 | — | — | — | O3 | | 1.6 | 3.60 | 3.65 | 27 | 26 | 19.1 | O3/UV | 30 | 1.3 | 0.85 | 0.90 | 83 | 82 | 5.5 | O3/TiO2/UV | | 1.3 | 0.26 | 0.26 | 95 | 95 | 5.3 | O2/TiO2/UV | | — | 0.55 | 0.60 | 89 | 88 | — | O2/UV | | — | 3.25 | 3.10 | 37 | 39 | — |
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Note: Initial ABS concentration—5 mg/dm3, = 20 ± 1°C.
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