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Table 1 Levels of \({\text{Cd}}_{{({\text{aq}})}}^{ 2+ }\) and \({\text{Pb}}_{{({\text{aq}})}}^{ 2+ }\) in the industrial effluents before adsorptive treatment
| Samplea | Cd2+ (mg/l)b | Pb2+ (mg/l)b |
|---|---|---|
| A (textile industry) | 0.66 ± 0.01 | 0.13 ± 0.01 |
| B (tanning industry) | 0.69 ± 0.01 | 0.39 ± 0.03 |
| C (tanning industry) | 0.82 ± 0.02 | 0.52 ± 0.02 |
| D (packaging materials industry) | 0.98 ± 0.01 | 0.92 ± 0.01 |
| E (insecticide industry) | 1.02 ± 0.03 | 1.18 ± 0.01 |
| F (textile industry) | 1.08 ± 0.01 | 1.32 ± 0.02 |
| G (tanning industry) | 1.26 ± 0.02 | 2.09 ± 0.01 |
| H (textile) | 1.30 ± 0.04 | 2.87 ± 0.02 |
| I (tanning industry) | 1.42 ± 0.02 | 3.26 ± 0.03 |
| J (tannery) | 2.06 ± 0.05 | 4.57 ± 0.03 |
