Table 2. Pseudo Second-Order Kinetic Constants for AO-II Adsorption on PLDH and LDH/PEG-15.
adsorbent | C0 (mg/L) | qe,exp (mg/g) | pseudo second-order model |
||
---|---|---|---|---|---|
qe,cal (mg/g) | k2 [g/(mg·min)] | R2 | |||
PLDH | 100 | 131.5 | 142.8 | 1.43 × 10–4 | 0.98 |
200 | 195.3 | 212.8 | 0.97 × 10–4 | 0.99 | |
LDH/PEG-15 | 100 | 181.8 | 196.1 | 1.65 × 10–4 | 0.99 |
200 | 339.6 | 370.4 | 0.82 × 10–4 | 0.99 |