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Isotherm parameters for Pb2+, Cd2+, and Cu2+ ions adsorption on the mp-CA/GO.
| Isotherm Model | Formula | Parameters | Pb2+ | Cu2+ | Cd2+ |
|---|---|---|---|---|---|
| Langmuir | C/q = C/qe + 1/(qeb) | qe (mg/g) | 366.835 | 180.274 | 96.693 |
| b (L/mg) | 0.493 | 0.473 | 0.415 | ||
| R2 | 0.994 | 0.998 | 0.995 | ||
| Freundlich | lgq = lgK + 1/nlgC | K (L/mg) | 5.263 | 3.863 | 3.573 |
| n | 2.163 | 1.663 | 1.862 | ||
| R2 | 0.878 | 0.873 | 0.864 |
