Nano particle | Amount of catalyst/20ml | k・sec−1 | Time taken for complete degradation (min) | COD values in mg/L | Degradation efficiency % | |
Before degradation | After degradation | |||||
Commercial ZnS | 0.02 g | 1.5 × 10−4 | 92 | 352 | 288 | 18.18 |
Zinc sulphide | 0.02 g | 14.04 × 10−4 | 22 | 352 | 16 | 95.45 |
0.04 g | 17.13 × 10−4 | 22 | 352 | 16 | 95.45 | |
0.06 g | 12.95 × 10−4 | 22 | 352 | 16 | 95.45 | |
| 0.02 g | 4.93 × 10−5 | 210 | 192 | 32 | 83.33 |
0.04 g | 7.67 × 10−5 | 150 | 192 | 64 | 66.66 | |
0.06 g | 6.39 × 10−5 | 130 | 192 | 96 | 50.00 |