Kinetic parameters of Pb(ii) adsorption onto g-C3N4/Fe3O4/UiO-66-COOH.
| Kinetic models | R 2 | K | q e (mg g−1) |
|---|---|---|---|
| Pseudo-first-order | 0.8037 | 0.0245 (L min−1) | 25.03 |
| Pseudo-second-order | 0.9998 | 0.0034 (g mg−1 min−1) | 192.30 |
| Intra-particle diffuse | R 1 = 0.9992 | K 1 = 14.26 (mg g−1 min−1/2) | C 1 = 117.8 |
| R 2 = 0.9270 | K 2 = 1.989 (mg g−1 min−1/2) | C 2 = 175.12 |