TABLE 3.
Effect of Fe(OH)3 or MnO2 amendment on the final recovery of 14CO2
| Microcosm | % of 14CO2 recovered from:
|
|||
|---|---|---|---|---|
| Surface filla
|
Intermediate aquiferb
|
|||
| Exptl | Control | Exptl | Control | |
| Anaerobic | 31 ± 2 | 1 ± 0 | 38 ± 1 | 3 |
| Fe(OH)3 amended | 21 ± 6 | 5 ± 1 | 28 ± 1 | 3 |
| MnO2 amended | 51 ± 5 | 6 ± 1 | 50 ± 0 | 1 |
a
17-day incubation period. Data are means ± standard deviations for triplicate experimental microcosms and duplicate control microcosms.
b
3-day incubation period. Experimental data are means ± standard deviations for duplicate microcosms, and control data are from a single sterile control microcosm.