Table 1.
List of experiments.
| Frequency, pps | T, °C | initial pH (after treatment) | Total treatment time, min | k1, min−1 | k2, m3/J | t1/2, min | ε 1/2, g/kWh | ε final, g/kWh | Removal rate |
|---|---|---|---|---|---|---|---|---|---|
| First set of experiments (without power supply) | |||||||||
| 0 | 20 | 7.1 (7.1) | 300 | — | — | — | — | — | — |
| 0 | 20 | 12.2 (12.2) | 300 | — | — | — | — | — | — |
| 0 | 20 | 3.5 (3.5) | 300 | — | — | — | — | — | — |
| 0 | 50 | 7.2 (7.2) | 300 | — | — | — | — | — | — |
| 0 | 50 | 12.0 (12.0) | 300 | — | — | — | — | — | — |
| 0 | 50 | 3.5 (3.5) | 300 | — | — | — | — | — | — |
| Second set of experiments* | |||||||||
| 50 | 20 | 7.1 (4.0) | 100 | 0.03311 | 6.57 × 10−7 | 20.93 | 122.6 | 49.92 | 0.99 |
| 50 | 20 | 12.1 (11.9) | 100 | 0.03289 | 6.52 × 10−7 | 21.07 | 120.9 | 49.17 | 0.99 |
| 50 | 20 | 3.5 (3.1) | 100 | 0.03321 | 6.59 × 10−7 | 20.87 | 117.8 | 48.11 | 1.00 |
| 200 | 20 | 7.2 (4.0) | 40 | 0.08760 | 4.34 × 10−7 | 7.91 | 81.5 | 30.89 | 1.00 |
| 200 | 20 | 12.2 (12.0) | 40 | 0.09557 | 4.74 × 10−7 | 7.25 | 88.7 | 31.47 | 0.99 |
| 200 | 20 | 3.6 (3.1) | 40 | 0.08701 | 4.31 × 10−7 | 7.97 | 79.4 | 30.45 | 1.00 |
| 500 | 20 | 7.2 (4.1) | 24 | 0.15300 | 3.03 × 10−7 | 4.53 | 56.2 | 20.75 | 1.00 |
| 500 | 20 | 12.1 (12.1) | 24 | 0.1616 | 3.21 × 10−7 | 4.29 | 60.2 | 21.00 | 0.99 |
| 500 | 20 | 3.5 (3.2) | 24 | 0.1380 | 2.74 × 10−7 | 5.02 | 49.1 | 19.92 | 1.00 |
| Third set of experiments | |||||||||
| 50 | 50 | 7.0 (5.8) | 160 | 0,01622 | 3.22 × 10−7 | 42.73 | 59.8 | 30.15 (20.5)** | 0.97 (0.99)** |
| 50 | 10 | 7.0 (4.7) | 100 | 0,03425 | 6.79 × 10−7 | 20.24 | 127.4 | 49.38 | 0.99 |
| 500 | 50 | 6.9 (4.4) | 60 | 0,05295 | 1.05 × 10−7 | 13.09 | 19.6 | 8.11 (6.2)** | 0.97 (0.99)** |
| 500 | 10 | 7.0 (4.9) | 24 | 0,1594 | 3.16 × 10−7 | 4.35 | 58.4 | 20.84 | 1.00 |
*The same set was repeated with the flow rate 8 L/min.
**After approximation.