Table 3.
Speciation of metal forms in sewage sludge according to the Tessier procedure
| Experiment no. | Fraction | Metal | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Lead | Chromium | Cadmium | Copper | Nickel | Mercury | Zinc | Arsenic | ||
| mg/kg dm | mg/kg dm | mg/kg dm | mg/kg dm | mg/kg dm | mg/kg dm | mg/kg dm | mg/kg dm | ||
| 1 | Ion-exchange | 3.3 | 1.3 | 0.2 | 16.4 | 2.5 | 0.3 | 156.5 | 1.2 |
| Carbonate | 5.0 | 2.2 | 0.4 | 3.3 | 0.9 | 0.2 | 238.8 | 1.4 | |
| Hydroxyl | 2.5 | 2.1 | 0.2 | 5.2 | 1.3 | 0.3 | 158.3 | 1.1 | |
| Organic | 4.9 | 3.1 | 0.3 | 14.1 | 2.3 | 0.1 | 112.9 | 0.7 | |
| Residual | 0.5 | 2.6 | 0.1 | 13.5 | 1.7 | 0.1 | 192.7 | 0.6 | |
| 2 | Ion-exchange | 3.6 | 1.3 | 0.3 | 14.9 | 2.5 | 0.3 | 142.2 | 1.2 |
| Carbonate | 4.6 | 2.1 | 0.1 | 9.3 | 0.7 | 0.2 | 181.7 | 1.2 | |
| Hydroxyl | 2.1 | 1.9 | 0.2 | 3.7 | 1.2 | 0.3 | 182.3 | 0.9 | |
| Organic | 4.2 | 2.9 | 0.2 | 12.7 | 3.0 | 0.1 | 130.0 | 0.6 | |
| Residual | 1.7 | 2.8 | 0.4 | 12.0 | 1.4 | 0.1 | 225.0 | 1.2 | |
| 3 | Ion-exchange | 1.3 | 1.2 | 0.2 | 12.1 | 0.6 | 0.1 | 193.3 | 0.8 |
| Carbonate | 5.8 | 2.0 | 0.2 | 4.8 | 2.3 | 0.2 | 171.9 | 1.5 | |
| Hydroxyl | 2.2 | 1.9 | 0.3 | 9.0 | 0.6 | 0.3 | 187.9 | 1.1 | |
| Organic | 5.4 | 3.0 | 0.2 | 11.9 | 1.8 | 0.2 | 176.5 | 0.8 | |
| Residual | 1.5 | 3.2 | 0.3 | 15.0 | 3.3 | 0.1 | 131.6 | 0.8 | |
| 4 | Ion-exchange | 1.6 | 1.1 | 0.1 | 13.1 | 1.6 | 0.3 | 218.6 | 1.0 |
| Carbonate | 2.6 | 1.4 | 0.2 | 6.4 | 1.8 | 0.3 | 112.7 | 1.1 | |
| Hydroxyl | 4.7 | 2.0 | 0.3 | 7.0 | 1.5 | 0.2 | 200.0 | 1.1 | |
| Organic | 2.6 | 2.6 | 0.2 | 14.0 | 0.5 | 0.2 | 190.7 | 1.0 | |
| Residual | 4.8 | 4.0 | 0.4 | 12.0 | 3.4 | 0.2 | 132.1 | 1.0 | |
| 5 | Ion-exchange | 1.4 | 1.7 | 0.3 | 7.5 | 2.4 | 0.2 | 250.0 | 1.3 |
| Carbonate | 1.2 | 1.5 | 0.3 | 6.4 | 1.6 | 0.3 | 164.2 | 1.0 | |
| Hydroxyl | 1.7 | 3.1 | 0.1 | 7.3 | 1.7 | 0.2 | 161.5 | 0.7 | |
| Organic | 1.3 | 1.4 | 0.1 | 15.6 | 1.7 | 0.2 | 143.7 | 0.7 | |
| residual | 10.6 | 3.5 | 0.5 | 16.1 | 1.3 | 0.1 | 141.7 | 1.3 | |
| 6 | Ion-exchange | 3.1 | 1.0 | 0.3 | 19.5 | 1.6 | 0.3 | 187.4 | 1.1 |
| Carbonate | 4.7 | 1.2 | 0.2 | 8.2 | 1.1 | 0.2 | 148.1 | 1.0 | |
| Hydroxyl | 1.3 | 2.1 | 0.1 | 6.2 | 0.8 | 0.1 | 142.1 | 0.6 | |
| Organic | 2.8 | 3.3 | 0.1 | 4.0 | 1.1 | 0.1 | 88.6 | 0.4 | |
| Residual | 1.3 | 1.6 | 0.3 | 6.7 | 2.7 | 02 | 149.7 | 0.8 | |
| 7 | Ion-exchange | 3.1 | 1.0 | 0.3 | 22.5 | 1.6 | 0.3 | 177.7 | 1.0 |
| Carbonate | 4.2 | 1.3 | 0.3 | 4.3 | 1.2 | 0.2 | 150.6 | 0.9 | |
| Hydroxyl | 1.2 | 2.1 | 0.1 | 7.1 | 1.0 | 0.2 | 141.5 | 0.8 | |
| Organic | 2.5 | 3.3 | 0.1 | 4.2 | 1.1 | 0.1 | 88.4 | 0.4 | |
| Residual | 2.1 | 1.6 | 0.2 | 6.5 | 2.3 | 0.2 | 157.8 | 1.0 | |
| 8 | Ion-exchange | 2.3 | 0.7 | 0.2 | 12.5 | 1.4 | 0.3 | 213.9 | 1.1 |
| Carbonate | 4.3 | 0.9 | 0.1 | 10.6 | 1.1 | 0.2 | 193.4 | 0.8 | |
| Hydroxyl | 1.0 | 2.0 | 0.2 | 9.4 | 0.5 | 0.1 | 122.7 | 0.8 | |
| Organic | 2.5 | 2.8 | 0.2 | 4.3 | 1.0 | 0.1 | 115.8 | 0.6 | |
| Residual | 2.0 | 2.9 | 0.4 | 7.7 | 3.4 | 0.2 | 71.1 | 0.7 | |
| 9 | Ion-exchange | 1.3 | 1.3 | 0.2 | 6.1 | 1.2 | 0.3 | 161.4 | 1.2 |
| Carbonate | 4.9 | 2.0 | 0.2 | 12.3 | 1.0 | 0.2 | 177.4 | 0.9 | |
| Hydroxyl | 1.1 | 0.9 | 0.2 | 10.0 | 1.1 | 0.2 | 162.7 | 0.7 | |
| Organic | 3.1 | 2.2 | 0.1 | 6.1 | 0.7 | 0.1 | 117.6 | 0.6 | |
| Residual | 2.8 | 2.9 | 0.3 | 10.2 | 3.3 | 0.1 | 95.9 | 0.6 | |
| 10 | Ion-exchange | 1.7 | 1.7 | 0.2 | 12.0 | 1.0 | 0.3 | 181.9 | 1.1 |
| Carbonate | 3.8 | 2.6 | 0.2 | 7.6 | 0.9 | 0.2 | 164.8 | 0.9 | |
| Hydroxyl | 1.4 | 1.4 | 0.1 | 6.8 | 0.9 | 0.1 | 153.9 | 0.7 | |
| Organic | 1.2 | 1.3 | 0.1 | 3.7 | 0.8 | 0.1 | 97.0 | 0.5 | |
| Residual | 5.1 | 2.2 | 0.4 | 14.5 | 3.6 | 0.1 | 117.5 | 0.7 | |
| 11 | Ion-exchange | 3.6 | 2.0 | 0.3 | 16.7 | 1.1 | 0.2 | 220.3 | 1.3 |
| Carbonate | 3.2 | 2.1 | 0.2 | 8.4 | 1.7 | 0.2 | 137.6 | 1.0 | |
| Hydroxyl | 0.7 | 1.8 | 0.1 | 8.3 | 1.4 | 0.2 | 140.9 | 0.7 | |
| Organic | 3.8 | 1.2 | 0.2 | 8.9 | 1.6 | 0.1 | 173.1 | 0.6 | |
| Residual | 5.1 | 4.1 | 0.5 | 10.6 | 2.7 | 0.3 | 191.3 | 1.5 | |
| 12 | Ion-exchange | 4.8 | 1.1 | 0.2 | 9.5 | 2.3 | 0.3 | 135.7 | 1.2 |
| Carbonate | 4.3 | 2.6 | 0.2 | 8.7 | 1.0 | 0.3 | 137.9 | 1.2 | |
| Hydroxyl | 0.7 | 1.7 | 0.1 | 9.1 | 1.1 | 0.1 | 140.0 | 0.7 | |
| Organic | 2.7 | 1.4 | 0.1 | 10.0 | 2.2 | 0.1 | 146.4 | 0.8 | |
| Residual | 3.9 | 4.4 | 0.7 | 15.5 | 2.2 | 0.2 | 300.0 | 1.2 | |
| 13 | Ion-exchange | 4.6 | 3.4 | 0.3 | 10.8 | 2.2 | 0.3 | 182.2 | 1.3 |
| Carbonate | 6.2 | 2.3 | 0.3 | 12.3 | 0.9 | 0.3 | 150.7 | 1.4 | |
| Hydroxyl | 1.1 | 1.9 | 0.2 | 9.8 | 1.3 | 0.1 | 192.2 | 0.7 | |
| Organic | 0.7 | 1.3 | 0.1 | 8.6 | 1.4 | 0.1 | 96.1 | 0.7 | |
| Residual | 3.9 | 2.1 | 0.4 | 11.3 | 2.8 | 0.2 | 238.0 | 0.8 | |
| 14 | Ion-exchange | 6.4 | 3.0 | 0.1 | 15.3 | 1.8 | 0.3 | 178.0 | 1.4 |
| Carbonate | 2.5 | 2.5 | 0.1 | 12.7 | 0.7 | 0.3 | 17.6 | 1.2 | |
| Hydroxyl | 2.2 | 1.8 | 0.1 | 11.4 | 0.6 | 0.2 | 158.5 | 0.8 | |
| Organic | 2.0 | 1.6 | 0.2 | 0.2 | 2.3 | 0.2 | 110.3 | 0.7 | |
| Residual | 3.2 | 2.1 | 0.7 | 13.2 | 3.2 | 0.1 | 235.7 | 1.1 | |
| 15 | Ion-exchange | 6.6 | 3.5 | 0.1 | 11.0 | 1.1 | 0.3 | 133.7 | 1.5 |
| Carbonate | 1.7 | 2.2 | 0.2 | 24.0 | 1.2 | 0.2 | 160.2 | 1.0 | |
| Hydroxyl | 1.6 | 2.6 | 0.2 | 0.3 | 1.0 | 0.2 | 133.0 | 0.7 | |
| Organic | 0.7 | 1.7 | 0.3 | 0.2 | 0.6 | 0.2 | 107.6 | 0.6 | |
| Residuzal | 5.8 | 1.1 | 0.5 | 16.5 | 4.9 | 0.2 | 324.7 | 1.1 | |