Table 1 Kinetic parameters for the adsorption of Pb(II) and Cr(VI) ion onto CSM/SA hybrid beads
Pseudo-first-order | Pseudo-second-order | Intraparticle Diffusion | |||||||
|---|---|---|---|---|---|---|---|---|---|
Ion | qeexp (mg g− 1) | qecal (mg g− 1) | k1 (min− 1) | R2 | qecal (mg g− 1) | k2 (g mg− 1 min− 1) | R2 | k (mg g− 1 min-1/2) | R2 |
Pb(II) | 51 | 74 | 0.014 | 0.995 | 86 | 0.0022 | 0.949 | 4.9 | 0.884 |
Cr(VI) | 2.2 | 4.4 | 0.0027 | 0.967 | 3.6 | 0.0025 | 0.997 | 0.19 | 0.989 |