Table 5.

Summary of isotherm model parameters for Ni²⁺, Pb²⁺, Mn²⁺, and Zn²⁺ ion adsorption on Mucor sp. NRCC6 dead biomass

Ion adsorption	Langmuir			Freundlich			Dubinin–Kaganer–Radushkevich (DKR)
	KL L/mg	qmax (mg/g)	R2	Kf	n	R2	Xm (mol/g)	β (mol2/j2)	E, KJ/mol	R2
Pb2+	47.57	16.86	0.9319	3.282	2.14	0.9979	2.04 × 10−4	0.2438 × 10−8	14.32	0.9471
Zn2+	4.15	3.22	0.969	0.681	3.3	0.9184	9.18 × 10−5	0.3064 × 10−8	12.774	0.9006
Ni2+	0.846	20.25	0.967	0.419	1.29	0.9972	1.52 × 10−3	0.769 × 10−8	8.065	0.9975
Mn2+	2.84	6.12	0.9776	0.714	2.19	0.9594	3.22 × 10−4	0.4705 × 10−8	10.309	0.9695