Research Article
Adsorption of Arsenite by Six Submerged Plants from Nansi Lake, China
Table 1
Isotherm parameters for Langmuir, Freundlich, and Dubinin-Radushkevich models for As (III) adsorption at 13°C.
| Plants | Freundlich model | Langmuir model | Dubinin-Radushkevich model | | | | | | | | | | | (mg/kg) (L/mg) | mg/kg | L/mg | mol2/kJ2 | mg/kg | kJ/mol |
| Mimulicalyx rosulatus | 7.60 | 0.70 | 0.97 | 3.09 | 10.92 | 0.82 | 0.029 | 5.52 | 4.12 | 0.85 | Potamogeton maackianus | 10.41 | 0.58 | 0.99 | 6.93 | 8.95 | 0.98 | 0.024 | 8.18 | 4.53 | 0.95 | Hydrilla | 8.78 | 0.59 | 0.92 | 18.08 | 1.91 | 0.89 | 0.028 | 7.97 | 4.23 | 0.93 | Watermifoil | 4.12 | 1.15 | 0.98 | −0.83 | −2.35 | 0.92 | 0.058 | 3.38 | 2.95 | 0.93 | Pteris vittata | 24.99 | 0.88 | 0.95 | 6.64 | −3.49 | 0.91 | 0.044 | 22.68 | 3.37 | 0.93 | Potamogeton crispus | 39.88 | 0.99 | 0.99 | −3.65 | −3.59 | 0.95 | 0.055 | 23.39 | 3.02 | 0.98 |
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