Table 5. Kinetics Parameters and Error Analysis.
| element | model | k | FT | ME (%) | σ |
|---|---|---|---|---|---|
| Cr(VI) | pseudo-first-order | 0.919 | 1.057 | 3.613 | 0.878 |
| pseudo-second-order | 0.166 | 6.609 | 1.697 | 0.359 | |
| Cr(III) | pseudo-first-order | 2.215 | 0.820 | 3.405 | 1.052 |
| pseudo-second-order | 0.270 | 2.956 | 1.759 | 0.554 |