Table 2.
Mineral composition of tannery effluents before (T0) and after (Tf) fungal treatment assays compared to Tunisian standards for discharges in public canalizations. Values given represent the mean of three replicates.
| Unhairing effluent (UE) | Final effluent (FE) | NT 106.002 | |||||
|---|---|---|---|---|---|---|---|
| T0 | Tf (pHi) | Tf (pH=6) | T0 | Tf (pHi) | Tf (pH=6) | ||
| Cr (mg/L) | — | — | — | 1.053 ± 0.27 | 0.527 ± 0.03 | 0.375 ± 0.05 | 0.1 |
| BOD5 (g/L) | 0.375 ± 0.06 | 0.0954 ± 0.02 | 0.0375 ± 0.01 | 0.1875 ± 0.05 | 0.0834 ± 0.01 | 0.075 ± 0.01 | 0.4 |
| COD (g/L) | 3.64 ± 0.26 | 1.16 ± 0.17 | 0.373 ± 0.04 | 0.69 ± 0.07 | 0.26 ± 0.07 | 0.17 ± 0.05 | 1 |
Number of samples for each parameter “n” = 3