Catalyst 0.02 g | Concentration of dye (M) | k・sec−1 | Time taken for complete degradation (min) | COD values in mg・L−1 | Degradation efficiency % | |
Before degradation | After degradation | |||||
Zinc sulphide | 0.1 × 10−4 | 3.38 × 10−4 | 13 | 304 | 48 | 84.21 |
0.2 × 10−4 | 5.11 × 10−4 | 22 | 352 | 16 | 95.45 | |
0.3 × 10−4 | 4.47 × 10−4 | 82 | 360 | 64 | 82.22 | |
| 0.1 × 10−4 | 3.41 × 10−5 | 150 | 240 | 32 | 86.66 |
0.2 × 10−4 | 4.35 × 10−5 | 315 | 432 | 48 | 88.88 | |
0.3 × 10−4 | 6.39 × 10−5 | 485 | 320 | 64 | 80.00 |