Kinetic models | Parameters | Nickel | Cadmium |
---|---|---|---|
Pseudo-first-order | qe (mg/g) | 18.70 | 39.201 |
k1 (1/min) | 0.112 | 0.212 | |
R2 | 0.831 | 0.741 | |
Pseudo-second-order | qe (mg/g) | 24.592 | 45.272 |
k2 (g/mg.min) | 0.003 | 0.002 | |
R2 | 0.864 | 0.811 | |
Intra-particle diffusion | C (mg/g) | 15.542 | 32.031 |
kid (mg/g.min0.5) | 1.726 | 2.942 | |
R2 | 0.90 | 0.930 |