Table 3 Isotherm parameters for DBTO adsorption on BR, BF3, BF6, ACR, ACF3, and ACF6
From: Adsorption of dibenzothiophene sulfone using Fe3+ and Fe6+-impregnated clay adsorbents
Model | Parameter | BR | BF3 | BF6 | ACR | ACF3 | ACF6 |
|---|---|---|---|---|---|---|---|
Langmuir | KL (L mg−1) | 3.63 × 10–5 | 6.75 × 10–6 | 8.10 × 10–3 | 7.25 × 10–2 | 3.29 × 10–2 | 8.45 × 10–2 |
qm (mg g−1) | 659 | 1441 | 9 | 1686 | 3461 | 1365 | |
R2 | 0.9077 | 0.9320 | 0.9933 | 0.9125 | 0.8881 | 0.9370 | |
Freundlich | KF (mg g−1) | 1.48 × 10–3 | 2.20 × 10–3 | 1.21 | 4.28 × 10–3 | 1.29 × 10–2 | 2.29 × 10–3 |
n | 0.63 | 0.78 | 3.51 | 0.87 | 1.05 | 0.78 | |
R2 | 0.9135 | 0.9344 | 0.9771 | 0.8901 | 0.8804 | 0.9422 | |
Dubinin-Radushkevich | KD (mol2 kJ−2) | 7.39 × 10–3 | 1.38 × 10–2 | 2.04 × 10–3 | 1.40 × 10–2 | 1.22 × 10–2 | 1.46 × 10–2 |
qs (mg g−1) | 19.71 | 8.56 | 7.21 | 7.42 | 6.39 | 8.65 | |
R2 | 0.8249 | 0.8943 | 0.9983 | 0.9175 | 0.9310 | 0.9441 | |
Temkin | AT (L mg−1) | 7.30 × 10–3 | 5.82 × 10–3 | 1.13 × 10–1 | 6.29 × 10–3 | 7.53 × 10–3 | 5.85 × 10–3 |
BT (J mol−1) | 158 | 414 | 588 | 530 | 685 | 427 | |
R2 | 0.8792 | 0.9213 | 0.8768 | 0.8805 | 0.9004 | 0.9436 |