Adsorption of COD in Coking Wastewater on Nitric Acid-Modified Blue Coke Activated Carbon

Table 6

Kinetic parameters of adsorption using pseudo-second-order model, Elovich kinetic model, and Bangham kinetic model.

Shaking speed (rpm)	Pseudo-second-order model			Elovich kinetic model			Bangham kinetic model
	qe (mg·g^−1)	K2 (g/(mg·h))	R^2	ke (g/(mg·h))	A	R^2	k (g/(mg·h))	m	R^2
0	24.528	0.0028	0.9994	4.5270	0.1538	0.9831	5.5101	3.4642	0.9641
100	33.602	0.0089	0.9993	2.6838	19.909	0.9279	21.125	10.903	0.9298
200	34.483	0.0034	0.9959	2.1392	21.308	0.8602	22.434	14.126	0.8733