Kinetic Model for pH Variation Resulted from Interaction of Aqueous Solution Contaminated with Nickel Ions and Cement Kiln Dust

Table 5

Parameters of different numerical kinetic models for sorption kinetic data of nickel ions-CKD interaction.

Model	Parameter	Co (mg/L)
		200	400
Model 1	qc1	10.791	17.74725
		0.080	4.477
		1.440	0.054
		−0.189	4.149
		0.731	0.850
	SSE	0.290	2.092
Model 2	qc	12.334	9.462
		−0.031	0.085
		0.001	0.001
		0.00001	0.00002
		3.860	4.416
		−1.826	−1.751
		0.922	0.889
	SSE	0.084	1.549
Model 3	qc	11.108	13.153
		−0.00031	0.00155
		0.00001	0.00070
		3.938	0.796
		−2.057	−2.073
		0.864	0.733
	SSE	0.147	3.716
Model 4	qc1	10.787	14.892
		0.044	1.327
		0.400	0.008
		0.732	0.761
	SSE	0.289	3.320
Model 5	qc	11.582	9.461
		0.001	0.001
		−0.017	0.085
		0.044	0.101
		0.389	0.311
		0.900	0.889
	SSE	0.170	1.549
Model 6	qc	10.991	12.147
		−0.0002	−0.002
		0.044	0.099
		0.393	0.400
		0.833	0.742
	SSE	0.180	73.713