Fe₃O₄ Nanoparticles Embedded Sodium Alginate/PVP/Calcium Gel Composite for Removal of Cd²⁺

Table 3

Adsorption kinetic parameters of MSPC gel balls for Cd²⁺.

(mg/L)	Pseudo-first-order			Pseudo-second-order			Intraparticular diffusion model
	(g/mg min^−1)	(mg/g)		(g/mg min^−1)	(mg/g)		(mg/g min^1/2)		(mg/g min^1/2)
50	2.37	13.22	0.895	4.95	26.73	0.986	1.46	0.983	0.03
100	3.11	17.82	0.872	3.03	53.16	0.969	1.45	0.974	0.08
150	2.15	24.31	0.978	1.93	78.88	0.976	2.72	0.987	0.12	0.979
200	1.74	32.85	0.954	1.07	108.41	0.979	3.60	0.987	0.2	0.986