| Pseudo first order | Pseudo second order | |||||
| Metal ions | R2 | Equation of graph | K1 (min−1) | R2 | Equation of graph | K2 (g/mg min) |
| Pb | 0.953 | y = −0.243x – 0.955 | 0.5596 | 0.972 | y = 24.35x – 135.5 | 3.8626 |
| Cr | 0.972 | y = −0.207x – 1.214 | 0.4767 | 0.921 | y = 26.90x – 161.4 | 4.4833 |
| Ni | 0.943 | y = −0.098x – 0.542 | 0.2257 | 0.999 | y = 0.427x – 0.108 | 1.6882 |