Research Article
Mechanistic Study of Adsorption of Acid Orange-7 over Aluminum Oxide Nanoparticles
Table 2
Adsorption isotherm and statistical comparison values of adsorption isotherm.
| Isotherm model | Isotherm parameters | 303 K | 313 K | 323 K |
| Freundlich | | 1.223 | 1.228 | 3.154 | | 0.9335 | 1.1664 | 2.0242 | | 0.9801 | 0.9762 | 0.9957 | Std error | 0.00999 | 0.0317 | 0.0023 | Std deviation | 0.02447 | 0.07766 | 0.0023 | | −11.568 | −4.492 |
7.954
|
| Langmuir | | 0.9766 | 0.8509 | 0.2086 | | 1.3155 | 3.9425 | 11.517 | | 0.98017 | 0.9516 | 0.9957 | Std error | 0.00395 | 0.0037 | 0.00353 | Std deviation | 0.0109 | 0.00906 | 0.00806 | | 1.265 | 2.945 | 6.332 |
| Temkin | | 0.999 | 0.997 | 0.995 | | 91.728 | 82.712 | 68.135 | | 0.93377 | 0.9542 | 0.9884 | Std error | 4.5236 | 2.8296 | 5.0095 | Std deviation | 11.0805 | 6.9313 | 12.271 | | −8.646 | −13.527 | −9.111 |
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