Synthesis and Characterization of Fe₃O₄-Bentonite Nanocomposite Adsorbent for Cr(VI) Removal from Water Solution

Table 9

Parameters of kinetic models for Cr(VI) ion adsorption onto the nanocomposite adsorbent (BMNC).

Kinetic model	Parameters	Values
Pseudo-first order	qe (cal., mg/L)	29.2
	qe (exp., mg/L)	1.1
	K 1	0.029
	R2	0.859
	qe (cal., mg/L)	29.2
Pseudo-second order	qe (exp., mg/L)	33.7
	K 2	0.001
	R2	0.991
Intraparticle diffusion	K d (mg/g.min^0.5)	1.72
	C (mg/g)	10.2