Table 2.
Parameter values for miscible-displacement experiments.
| Column | Experiment | TCE Co mg L−1 |
RTCEa | Kdb mL g−1 |
Fraction TCE Sorbed Massc, % |
Percent recovery |
|---|---|---|---|---|---|---|
| A | Aged | 930 | 1.003 | 0.001 | 0.3 | 99.3 |
| Fresh | 880 | 1.09 | 0.017 | 8.5 | 99.1 | |
| B | Aged | 13.0 | 1.1 | 0.026 | 11 | 98.8 |
| Fresh | 12.0 | 1.2 | 0.038 | 14 | 100.7 | |
| C | Aged | 790 | 1.07 | 0.012 | 6.6 | 99.8 |
| D | Fresh | 920 | 1.08 | 0.015 | 8.1 | 99.9 |
a
Retardation factor obtained through moment analysis of trichloroethene’s elution tail.
b
Apparent distribution coefficient as a function of the initial trichloroethene aqueous-phase concentration.
c
For initial condition such that total mass includes trichloroethene present in the aqueous phase.