Table 1.

Adsorption isotherm constants for adsorption of Cr(VI) onto biomass of Aspergillus niger.

Adsorption isotherm	Parameters		R2
Langmuir isotherm	qmax, mg/g KL, L/mg	11.792 0.175	0.539
Freundlich isotherm	KF, mg/g, (L mg−1)1/n n	23.927 × 104 0.110	0.675
Temkin isotherm	B, mg/g A	8.0 × 10−4 1.525	0.812
D-R isotherm	qm, mg/g β, mol2 kJ−2 E, kJ mol−1	4.344 5822 2.9 × 10−3	0.127