Detoxification Assays of Tunisian Tannery Wastewater under Nonsterile Conditions Using the Filamentous Fungus Aspergillus niger

Table 2

Mineral composition of tannery effluents before (T₀) and after () 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	(pHi)	(pH=6)	T0	(pHi)	(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