New Sustainable Biosorbent Based on Recycled Deoiled Carob Seeds: Optimization of Heavy Metals Remediation

Table 5

Model isotherm constants for the biosorption of Cd(II) and Co(II) biosorption onto Raw-seeds, HCl-seeds, and NaOH-seeds.

Isotherms	Parameters	Raw-seeds		HCl-seeds		NaOH-seeds
		Cd(II)	Co(II)	Cd(II)	Co(II)	Cd(II)	Co(II)
Langmuir	qm (mg/g)	34.85	24.74	14.08	7.65	49.11	28.18
	KL (L/mg)	0.082	0.054	0.021	0.086	0.150	1.100
	r^2	0.996	0.997	0.992	0.999	0.999	0.993
Freundlich	N	5.176	5.890	3.352	12.082	4.564	6.091
	KF (mg1-1/n/g/Ln)	12.61	9.47	2.40	13.97	17.53	4.68
	r^2	0.988	0.994	0.988	0.999	0.991	0.973