Kinetics models for IC adsorption by Bi₂O₃ doped MgO.

Kinetics model	Kinetic equation	Parameter	MgOBi0	MgOBi1	MgOBi2	MgOBi3
PFO57	ln(qe − qt) = ln qe − k1t	q e (mg g−1)	49.02	63.79	100.43	44.05
		K 1 (min−1)	0.20	0.22	0.23	0.19
		R 2	0.97	0.96	0.96	0.98
PSO57		q m (exp) (mg g−1)	64.50	68.80	101.71	59.80
		q m (cal) (mg g−1)	70.07	76.04	110.74	67.70
		K 2 (g mg−1 min−1) × 104	7.17	5.17	3.04	4.81
		h 0 (mg g−1 min−1)	3.52	2.98	3.72	2.19
		t 1/2 (min)	19.72	25.43	29.70	30.70
		R 2	0.99	0.99	0.99	0.99
IPD58	q t = kdift1/2 + C	K dif1 (mg g−1 min1/2)	6.22	6.60	7.86	5.15
		C 1	4.15	1.04	5.78	1.64
		R 2	0.98	0.99	0.99	0.98
		K dif2 (mg g−1 min1/2)	1.69	2.55	2.50	1.87
		C 2	40.70	33.12	62.57	33.17
		R 2	0.96	0.96	0.92	0.97