Table 6 Adsorption kinetic parameters of Cd2+ and Pb2+ on PANI/Msc1 nanocomposite.
Models | Parameters | Pb | Cd |
|---|---|---|---|
Pseudo first-order | K1 (min)−1 | 0.01 | 0.02 |
qe (mg/g) | 4.17 | 2.84 | |
R2 | 0.73 | 0.61 | |
Pseudo second-order | K2 (g/mg min) | 6.2*10–3 | 6.7*10–3 |
qe (mg/g) (calculated) | 33.1 | 32.8 | |
qe (mg/g) (experimental) | 36.4 | 35.7 | |
Elovich model | α (mg/min) | 6.8 | 7.1 |
β (g/mg) | 0.46 | 0.46 | |
R2 | 0.64 | 0.62 | |
Intra particle diffusion model | Ki | 0.5 | 0.49 |
C (mg g-1) | 31.5 | 31.1 | |
R2 | 0.723 | 0.708 |
