Account

Table 1 Kinetic parameters of Cu(II) ions removal on kraft lignin for the initial concentrations 25, 50, 75 and 100 mg/dm³

From: Development of New Effective Sorbents Based on Nanomagnetite

Parameters	Cu(II) ions concentration
	25 mg/dm³	50 mg/dm³	75 mg/dm³	100 mg/dm³
PFO
q _e,exp	6.21	14.49	18.70	24.93
q _1,cal	0.11	0.09	0.06	0.05
k ₁	0.023	0.019	0.014	0.013
t _1/2	0.211	0.203	0.248	0.258
R ²	0.6923	0.9829	0.9429	0.8994
PSO
q _2,cal	6.23	12.49	18.71	24.96
k ₂	1.198	0.852	1.200	1.309
h	46.510	132.999	420.222	815.470
t _1/2	0.192	0.068	0.064	0.052
R ²	1.0000	1.0000	1.0000	1.0000
IPD
k _i1	0.02	0.02	0.06	0.006
k _i3	0.008	0.01	0.007	0.004
k _i3	0.004	0.004	0.004	0.004
R _i,1 ²	0.9791	0.6157	0.9442	0.9213
R _i,3 ²	0.9508	0.9782	0.9535	0.8997
R _i,3 ²	1.0000	1.0000	1.0000	1.0000
Elovich
A	7.35	4.63	3.35	2.31
B	53.82	37.94	55.20	71.17
R ²	0.9992	0. 9992	0.9768	0.8692

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