Adsorption of Toluene and Paraxylene from Aqueous Solution Using Pure and Iron Oxide Impregnated Carbon Nanotubes: Kinetics and Isotherms Study

Table 2

Adsorption kinetics parameters of toluene and p-xylene adsorption.

Model	Parameters	Toluene		p-xylene
		Pure CNTs	CNTs-iron oxide	Pure CNTs	CNTs-iron oxide
		60.70	60.70	47.78	47.78
Experimental		76.04	79.87	81	79.11
Pseudo-first-order		5.3	3.1	4.7	4.2
		7.43	6.94	4.92	5.10
	(%)	95	80	97	97
Pseudo-second-order		0.69	0.32	3.9	3.1
		107.53	128.21	87.72	86.96
	(%)	98	80	99.9	99.7
Intraparticle diffusion model		4.04	4.51	1.96	1.97
		4.74	−6.99	46.66	43.23
	(%)	91	93	85	96