Adsorptive Capacity of Calcinated Hen Eggshell Blended with Silica Gel for Removal of Lead II Ions from Aqueous Media: Kinetics and Equilibrium Studies

Table 10

Kinetics parameter’s values.

Kinetics model	Parameters	Values	Correlation coefficients
Pseudo-first order	qe (mg/g)	17.995	R^2 = 0.90111
Pseudo-first order	K1 (min-1)	0.0597	R^2 = 0.90111
Pseudo-second order	qe (mg/g)	14.000	R^2 = 0.82544
Pseudo-second order	K2	0.0021	R^2 = 0.82544
Intraparticle diffusion	Ki	0.7600	R^2 = 0.86273
Intraparticle diffusion	C	−0.055	R^2 = 0.86273