Research Article
A Study on Astrazon Black AFDL Dye Adsorption onto Vietnamese Diatomite
Table 2
The isotherm parameters of Langmuir and Freundlich models at various concentrations from 400 to 1400 mg L−1.
| (mg L−1) | Langmuir model | Freundlich model | | | | RL | p | | | | | p |
| 400 | 357.1 | 0.0244 | 0.955 | 0.0930 | 0.000 | 0.429 | 34.2607 | 447.3 | 0.975 | 0.000 | 500 | 416.7 | 0.0123 | 0.947 | 0.1402 | 0.001 | 0.480 | 24.2060 | 476.5 | 0.987 | 0.000 | 600 | 526.3 | 0.0098 | 0.957 | 0.1450 | 0.000 | 0.478 | 27.1669 | 578.8 | 0.978 | 0.000 | 800 | 625.0 | 0.0046 | 0.968 | 0.2132 | 0.000 | 0.499 | 20.5672 | 579.0 | 0.991 | 0.000 | 900 | 666.7 | 0.0033 | 0.975 | 0.2507 | 0.000 | 0.494 | 19.4608 | 560.1 | 0.977 | 0.000 | 1200 | 625.0 | 0.0020 | 0.986 | 0.3431 | 0.000 | 0.541 | 22.7250 | 539.3 | 0.961 | 0.001 | 1400 | 625.0 | 0.0021 | 0.946 | 0.2528 | 0.001 | 0.379 | 30.7288 | 477.5 | 0.931 | 0.002 |
|
|