Table 1.
Isotherm constants for adsorption of curcumin onto CS-ALG-STPP NPs
| Model | Parameters | Values |
|---|---|---|
| Langmuir isotherm | qm (mg g−1) | 32.467 |
| KL (L mg) | 22.000 | |
| R2 | 0.953 | |
|
| ||
| Freundlich isotherm | n | 3.441 |
| KF (mg1−(1/n) L1/n g−1) | 38.448 | |
| R2 | 0.982 | |
|
| ||
| Temkin isotherm | BT (J mol−1) | 5.024 |
| KT (L g−1) | 663.555 | |
| R2 | 0.907 | |
|
| ||
| Elovich isotherm | qm (mg g−1) | 0.144 |
| KE (L g−1) | 8.169*1025 | |
| R2 | 0.875 | |
|
| ||
| Langmuir–Freundlich | qm (mg g−1) | 243.902 |
| Kc | 0.174 | |
| n | 3.333 | |
| R2 | 0.992 | |
Abbreviations: CS-ALG-STPP NPs, chitosan–alginate–sodium tripolyphosphate nanoparticles; qm, maximum curcumin uptake.