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Table 1

Isotherm and kinetic model parameters for the Cu(II) adsorption on NiFe2O4 magnetic nanoparticles

Isotherm models
LangmuirFreundlich
R2 qm (mg/g) ka (L/mg) R2 KF (mg1−(1/n) L1/n g−11/n   
0.9985 200 2.5 0.9032 9.22 0.8684   
Kinetic models
Pseudo first-orderPseudo second-order
R2 qe,cal. (mg/g) k1 (min−1R2 qe,exp. (mg/g) qe,cal. (mg/g) k2 (g/(mg.min)) 
0.646 1.590 0.089 0.999 9.829 9.823 0.531 
Isotherm models
LangmuirFreundlich
R2 qm (mg/g) ka (L/mg) R2 KF (mg1−(1/n) L1/n g−11/n   
0.9985 200 2.5 0.9032 9.22 0.8684   
Kinetic models
Pseudo first-orderPseudo second-order
R2 qe,cal. (mg/g) k1 (min−1R2 qe,exp. (mg/g) qe,cal. (mg/g) k2 (g/(mg.min)) 
0.646 1.590 0.089 0.999 9.829 9.823 0.531 
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