Research Article
Biosorption of Fe(II) and Mn(II) Ions from Aqueous Solution by Rice Husk Ash
Table 3
Isotherm parameters for the adsorption of Fe(II) and Mn(II) on the RHA.
| ā | Freundlich isotherm model | Langmuir isotherm model | D-R isotherm model | ā | | | | (L/mg) | (mg/g) | | E (kJ/mol) | (mg/g) | |
| Fe(II) | 2.649 | 0.503 | 0.901 | 1.032 | 6.211 | 0.995 | 2.53 | 4.49 | 0.917 | Mn(II) | 1.379 | 0.345 | 0.892 | 0.907 | 3.016 | 0.986 | 2.27 | 2.54 | 0.918 |
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