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Table 2.
Efficiency of sorption of heavy metal ions by natural clays
| Layer | Sorption efficiency beyond 60 min., % | ||
|---|---|---|---|
| Cu2+ | Fe3+ | Cr3+ | |
| Polyana | 95 | 95 | 95 |
| Nelidovka | 94 | 95 | 94 |
| Top Olshanets | 72 | 90 | 90 |
| Orlovka | 70 | 63 | 67 |
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