Table 3 The parameters of isotherm models for the adsorption of CR onto the prepared nanocomposites.
From: Itaconic acid-modified layered double hydroxide/gellan gum nanocomposites for Congo red adsorption
Model | Adsorbent | R2 | Parametersa | |
|---|---|---|---|---|
Langmuir | NC-1% | 0.8780 | kL = 6.2 × 10–3 | qmax = 200.0 |
NC-3% | 0.9090 | kL = 8.2 × 10–3 | qmax = 204.1 | |
NC-5% | 0.8811 | kL = 11.3 × 10–3 | qmax = 208.3 | |
Freundlich | NC-1% | 0.9835 | kF = 1.479 | n = 1.157 |
NC-3% | 0.9810 | kF = 1.972 | n = 1.172 | |
NC-5% | 0.9868 | kF = 3.041 | n = 1.245 | |
D–R | NC-1% | 0.8579 | B = 1.45 × 10–7 | qmax = 59.4 |
NC-3% | 0.8388 | B = 1.48 × 10–5 | qmax = 65.3 | |
NC-5% | 0.7464 | B = 1.51 × 10–5 | qmax = 68.3 | |
