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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