The Process of Separating Bovine Serum Albumin Using Hydroxyapatite and Active Babassu Coal (Orbignya martiana)

Table 1

Kinetic parameters of BSA adsorption on hydroxyapatite (HA), synthetic hydroxyapatite (HAS), and active babassu coal (ACB) at pH 4.0 and pH 7.0 at 25°C.

Model	Parameter	pH
		4.0			7.0
		HA	HAS	ACB	HA	HAS	ACB
Pseudo-first-order		75.49	65.96	22.55	66.02	53.72	15.78
		66.75	60.97	20.59	61.56	50.70	14.83
		0.0431	0.0659	0.5278	0.0090	0.0060	1.3026
		0.8824	0.9399	0.9571	0.9198	0.9404	0.9477
	RMSE	5.86	7.00	1.93	8.20	6.05	1.35
Pseudo-second-order		75.49	65.96	22.55	66.02	53.72	15.78
		71.09	64.13	21.26	68.73	57.85	15.00
		0.0010	0.0016	0.0241	0.0002	0.0001	0.1384
		5.05	6.58	10.89	0.94	0.33	31.14
		0.9310	0.9708	0.9813	0.9457	0.9546	0.9594
	RMSE	4.42	4.91	1.29	6.78	5.30	1.20

Quantity of BSA adsorbed on the calculated equilibrium: (mg g⁻¹); BSA adsorbed amount at equilibrium experimentally obtained: (mg g⁻¹); rate constants and /min; time: /min; average error of the residue of the square (RMSE).