Research Article
Evaluation of Efficacy of Anionic Surfactant Degradation in the Presence of Concomitant Impurities of Natural Waters
Table 6
Effect of bicarbonate ions on the degree of destruction of fulvic acid by various methods.
| Characteristic of fulvic acid solution | Oxidation method | , mg/(dm3·min) | Discoloration, % | ΔTOC, % | /ΔTOC, mg/mg |
| TO—16.4 mg/dm3, pH 8.2, 2 mg-eq/dm3 | O3/UV | 3.2 | 94 | 35 | 10.1 | O3/TiO2/UV | 3.4 | 98 | 60 | 6.7 | O2/TiO2/UV | — | 92 | 30 | — |
| TO—15.8 mg/dm3, pH 6, 0 mg-eq/dm3 | O3/UV | 3.1 | 86 | 51 | 7.3 | O3/TiO2/UV | 3.2 | 94 | 85 | 4.6 | O2/TiO2/UV | — | 95 | 53 | — |
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Note: = 30 min; = 8 mW/cm2; = 18 ± 1°C.
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