Table 2.

Isotherm model constants for copper biosorption by C . lacerata at pH 6 and 25°C

Isotherm models	Constants of models
Langmuir	q max = 8.31 mg/g	K L = 3.45 × 10−2 mg−1	R L 2 = 0.9979	p < 0.05
Freundlich	n = 0.56	K F = 0.52	R F 2 = 0.9696	p < 0.05