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| element | model | qmaxL (mg g–1)/nF | KL/F | FT | ME (%) | σ |
|---|---|---|---|---|---|---|
| Cr(VI) | Langmuir | 218.27 | 0.05 | 19.94 | 25.13 | 14.84 |
| Freundlich | 2.61 | 32.9 | 17.53 | 13.60 | 15.83 | |
| Cr(III) | Langmuir | 119.38 | 0.13 | 30.85 | 9.11 | 6.26 |
| Freundlich | 3.85 | 34.2 | 9.75 | 14.36 | 11.13 |
