| Ozonation with sonolysis |
[RB 19] = 500 mg L−1, [O3] = 3.8 g h−1, ultrasound density = 88 W L−1, pH = 8, temperature = 25 °C, time = 120 min |
Pseudo-first-order rate (k) = 8.2 × 10−3 min−1
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54
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| Ozonation process |
[RB 19] = 100 mg L−1, volume = 4 L, [O3] = 88.8 mg min−1, pH = 5.7, time = 10 min |
BOD5/COD = 0.33, COD removal = 36%, microtox toxicity < 1 (TU value) |
46
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| Ozonation process |
[RB 19] = 435 mg L−1, [O3] = 55.8 mg L−1, volume = 1 L, pH = 6, time = 120 min |
RB 19 decolorization = 100%, TOC removal = 94%, inhibition of V. fischeri = 15% |
52
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| Electro-Fenton process catalyzed by Fe3O4 nanoparticles (H2O2 generated in situ) |
[RB 19] = 100 mg L−1, [Fe3O4] = 1.0 g L−1, volume = 200 mL, current density = 3.0 mA cm−2, pH = 3, temperature = 35 °C, time = 180 min |
TOC removal = 87%, pseudo-first-order rate (k) = 3.21 × 10−3 min−1
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53
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| Ozonation with membrane contactor |
[RB 19] = 75 mg L−1, [O3] = 40 mg L−1, PVDF-PAM membrane, volume = 1 L, pH = 3, time = 90 min |
RB 19 decolorization = 98.6%, COD removal = 63%, TOC removal = 14%, BOD5/COD = 0.21 |
Current work |
| Fenton process |
[RB 19] = 75 mg L−1, [Fe2+] = 0.25 mM, [H2O2] = 1.5 mM, volume = 1 L, pH = 3, time = 90 min |
RB 19 decolorization = 91.2%, COD removal = 71%, TOC removal = 12%, BOD5/COD = 0.14 |
| Photo-Fenton process |
[RB 19] = 75 mg L−1, [Fe2+] = 0.25 mM, [H2O2] = 1.5 mM, volume = 1 L, light intensity = 7 W, pH = 3, time = 90 min |
RB 19 decolorization = 82.6%, COD removal = 74%, TOC removal = 9%, BOD5/COD = 0.13 |
