Thermodynamics of Biosorption for Removal of Co(II) Ions by an Efficient and Ecofriendly Biosorbent (Saccharum bengalense): Kinetics and Isotherm Modeling

Table 2

Kinetics parameters for sorption of Co(II) on SB.

Kinetics model	Constants parameters			𝑞𝑒 (Exp)	R ^2
Pseudo-first-order model	𝑞𝑒 (Cal.)		𝐾𝑓 (min^−1)
	4.73		0.0454	4.62	0.895
Pseudo-second-order model	T	𝑞𝑒 (Cal)	𝐾𝑠 (g mg^−1 min^−1)
	293 K		0.0184
	303 K		0.0202
	313 K		0.0226	4.62	0.903
	323 K	4.62	0.024
Intra-particle diffusion model	C		𝑘id (mg g^−1 min^−1/2)
	1.59		0.327	4.62	0.710
Elovich model	α (mg/g min)		β (g/mg)
	0.11		0.884	4.62	0.885
Bangham model	α		𝑘𝐵
	0.332		5.7 × 10^−4	4.62	0.906