Table 6.

Effect of biosorbet dosage (%) on biosorption efficiency (%) of the heavy metals Ni²⁺, Cr⁶⁺ and Zn²⁺ by the dead biomass of Nocardiopsis sp. MORSY1948 and Nocardia sp. MORSY2014.

Biosorbent	Heavy metal	Biosorption efficiency (%) at different biosorbent dosage (%)
		0.05	0.1	0.2	0.3	0.4	0.5
Nocardiopsis sp. MORSY1948 (dead cells)	Ni2+	13.77	41.90	60.19	87.90	100	100
Cr6+	9.52	23.37	54.48	63.75	100	100
Zn2+	16.05	41.52	72.57	84.15	100	100
Nocardia sp. MORSY2014 (dead cells)	Ni2+	15.80	53.20	67.50	93.53	100	100
Cr6+	19.27	34.81	70.29	89.22	100	100
Zn2+	11.91	40.32	66.12	90.37	100	100