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Table 2 Kinetic parameters of Pb(II) ions removal on magnetic hybrid nanocomposite material for the initial concentrations 25, 50, 75 and 100 mg/dm3

From: Development of New Effective Sorbents Based on Nanomagnetite

Parameters Pb(II) ions concentration
  25 mg/dm3 50 mg/dm3 75 mg/dm3 100 mg/dm3
PFO
q e,exp 6.23 14.13 14.96 16.06
q 1,cal 0.07 4.91 5.33 5.87
k 1 0.017 0.021 0.019 0.015
t 1/2 0.259 0.003 0.004 0.003
R 2 0.9487 0.8207 0.9786 0.9814
PSO
q 2,cal 6.21 13.36 15.31 16.43
k 2 0.797 0.410 0.121 0.010
h 3.774 1.840 2.683 2.622
t 1/2 0.128 0.111 0.031 0.001
R 2 1.0000 0.9976 0.9994 0.9990
IPD
k i1 0.09 0.34 0.96 1.33
k i3 0.06 0.36 0.47 0.52
k i3 0.004 0.438 0.199 0.272
R i,1 2 0.9791 0.9922 0.9751 0.9999
R i,3 2 0.9508 0.7985 0.9007 0.9406
R i,3 2 1.0000 1.0000 1.0000 1.0000
Elovich
A 43.12 48.84 64.65 92.01
B 0.72 0.61 0.60 0.53
R 2 0.9867 0.9192 0.9798 0.9838