Table 1.
Kinetic equations for TCE degradation in different oxidation systems
| System | Reaction Period | Temperature (°C) | Regression equation | R2 | kobs a (h−1) |
|---|---|---|---|---|---|
| SO b | Rapid-stage | 10 | y = −0.076x + 0.014 | 0.90 | 0.076 |
| SO | Rapid-stage | 20 | y = −0.123x − 0.016 | 0.95 | 0.123 |
| SO | Rapid-stage | 30 | y = −0.208x − 0.054 | 0.83 | 0.208 |
| SO | Rapid-stage | 40 | y = −0.362x − 0.089 | 0.85 | 0.362 |
| SO | Rapid-stage | 50 | y = −0.533x − 0.087 | 0.93 | 0.533 |
| SO | Slow-stage | 10 | y = −0.011x − 0.161 | 0.93 | 0.011 |
| SO | Slow-stage | 20 | y = −0.018x − 0.237 | 0.98 | 0.018 |
| SO | Slow-stage | 30 | y = −0.044x − 0.311 | 0.95 | 0.044 |
| SO | Slow-stage | 40 | y = −0.116x − 0.420 | 0.99 | 0.116 |
| SO | Slow-stage | 50 | y = −0.242x − 0.496 | 0.98 | 0.242 |
| STO c | Entire reaction | 10 | y = −0.034x + 0.025 | 0.90 | 0.034 |
| STO | Entire reaction | 20 | y = −0.104x + 0.014 | 0.94 | 0.104 |
| STO | Entire reaction | 30 | y = −0.361x + 0.212 | 0.92 | 0.361 |
| STO | Entire reaction | 40 | y = −0.899x + 0.304 | 0.96 | 0.899 |
| STO | Entire reaction | 50 | y = −1.383x + 0.221 | 0.93 | 1.38 |
Kobs is the pseudo first-order rate constant
SO: siderite-catalyzed hydrogen peroxide oxidant
STO: siderite-catalyzed binary oxidants (hydrogen peroxide and persulfate)