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Table 2.
Reduction of the content of toxic elements in the tailings pond (mg/kg)
| Experience option | Sb | Cd | Ni | Zn |
|---|---|---|---|---|
| Soil before reclamation (the control) | 689.2 | 14.4 | 42.7 | 452.6 |
| Overlay of a substrate of 2 types of clay | 404.6 | 13.1 | 38.4 | 381.0 |
| Substrate 2 clay + peat | 312.4 | 10.1 | 28.2 | 335.5 |
| Substrate + hydrogen sulfide water | 262.6 | 6.28 | 14.7 | 328.0 |
| Substrate + hydrogen sulfide water + storage plants | 178.4 | 1.8 | 12.6 | 125.0 |
| Substrate + peat + mineral hydrogen sulfide water + sowing of accumulating cultures mixed with a husk of winter camelina | 56.8 | 0.38 | 4.0 | 82.0 |
| Reduction in soil toxicity, % | 91.8 | 87.5 | 90.5 | 98.2 |
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