Table 3.
Kinetic rate of DR83 degradation by the HC/ZVI/sulfite process in the presence of radical scavengers.
| Item | Value |
|---|---|
| kobs value of HC/ZVI/sulfite process | 0.035±0.002 (min−1) |
| kobs value of HC/ZVI/sulfite process + p-BQ | 0.030±0.002 (min−1) |
| kobs value of HC/ZVI/sulfite process + TBA | 0.018±0.001 (min−1) |
| kobs value of HC/ZVI/sulfite process + EtOH | 0.007±0.0004 (min−1) |
| kobs value of HC process | 0.018±0.001 (min−1) |
| Radical contribution | 78.92 (%) |
| HC process | 21.08 (%) |
| Contribution of •OH radicals | 48.43 (%) |
| Contribution of SO4•− radicals | 51.57 (%) |