Table 2.
Heavy metals, metaloids, sulfate, and volatile fatty acid concentrations detected in the porewater sediments and percentage of reduction in JL layers
| Sample | Concn (mM)a |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Formate | Acetate | Sulfate | Fe | Co | Ni | Cu | Zn | As | Al | Mn | |
| SN | 1.1 × 10−2 ± 2.1 × 10−3 | 0.1 ± 2.1 ×10−2 | 20.4 ± 2.3 | 92.2 ± 2.1 | UDL | UDL | 1.0 ± 0.2 | 11.2 ± 0.4 | 1.1 × 10−2 ± 9 × 10−4 | 43 ± 3.5 | 2.9 ± 0.2 |
| JL brown | 1.3 ×10−2 ± 3.2 × 10−3 | 6.6 × 10−3 ± 3.2 × 10−4 | 25.5 ± 3.1 | 100.2 ± 1.2 | 1.3 × 10−1 ± 5 × 10−3 | 4.4 × 10−2 ± 8 × 10−4 | 7.9 × 10−3 ± 3 × 10−4 | 1.9 ± 0.1 | 1.4 × 10−2 ± 2.5 × 10−3 | 33 ± 1.4 | 4.1 ± 1.4 |
| JL black | 1.1 × 10−2 ± 2.1 × 10−3 | 1.3 ± 1.5 × 10−2 | 12.5 ± 1 | 52.2 ± 3.3 | 1.2 × 10−2 ± 2.1 × 10−3 | 1 × 10−3 ± 2.4 × 10−4 | 3.1 × 10−4 ± 1 × 10−5 | 6.1 × 10−3 ± 4.1 × 10−4 | 1.3 × 10−3 ± 4.5 × 10−4 | 3.3 × 10−2 ± 4 × 10−3 | 2.1 ± 0.1 |
| % reduction in JL black | 51.1 | 47.9 | 90.9 | 97.7 | 96.0 | 99.7 | 90.6 | 99.9 | 48.3 | ||
a
UDL, under the detection limit.