Table 4 Kinetic study for the adsorption of imidacloprid and carbofuran on silica anchored GO composite.
Pesticides | Temperature (℃) | Pseudo 1st order | Pseudo 2nd order | Intra particle diffusion | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
K1 (min−1) | Qe (mg g−1) (cal) | Qe (mg g−1) (exp) | R2 | K2 (min−1) | Qe (mg g−1)(cal) | Qe (mg g−1) (exp) | R2 | Kid (min−1/2) | C (mg g−1) | R2 | ||
Carbofuran | 10 | 0.0064 | 1.2853 | 3.317 | 0.27 | 0.022 | 3.273 | 3.317 | 0.96 | 0.0356 | 2.5256 | 0.02 |
20 | 0.0074 | 1.2052 | 3.317 | 0.95 | 1.926 | 3.330 | 3.317 | 0.99 | 0.0584 | 2.3248 | 0.88 | |
30 | 0.0094 | 1.435 | 3.317 | 0.79 | 1.926 | 3.331 | 3.317 | 0.99 | 0.0430 | 2.6008 | 0.83 | |
Imidacloprid | 10 | 0.0016 | 1.346 | 3.198 | 0.95 | 0.042 | 0.601 | 3.198 | 0.97 | 0.2619 | 4.113 | 0.71 |
20 | 0.0017 | 1.5365 | 3.198 | 0.97 | 0.055 | 1.170 | 3.198 | 0.93 | 0.2007 | 3.7828 | 0.49 | |
30 | 0.0013 | 1.8451 | 3.198 | 0.79 | 0.339 | 1.180 | 3.198 | 0.99 | 0.1864 | 3.8209 | 0.57 | |
