Removal of Lead from Water Using Calcium Alginate Beads Doped with Hydrazine Sulphate-Activated Red Mud as Adsorbent

Table 4

Adsorption kinetic parameters.

S. number	Adsorption kinetic parameters	Slope	Intercept	R^2
(1)	Pseudo-first-order model	−0.0103	2.234	0.8373
(2)	Pseudo-second-order model	0.0062	0.2181	0.9934
(3)	Elovich model	28.253	−12.52	0.9654
(4)	Bangham’s pore diffusion model	0.2563	−1.9726	0.9768