Research Article
Effects of Cu(II) on the Adsorption Behaviors of Cr(III) and Cr(VI) onto Kaolin
Table 2
Intraparticle diffusion model for Cr(III) and Cr(VI) adsorption in single and binary solution.
| Adsorbed solution | Film diffusion | Pore diffusion | Intraparticle diffusion | | | | | | | | | |
| Cr(III) | 0.176 | 0.146 | 0.997 | 0.065 | 0.136 | 0.993 | 0.778 | 0.011 | 0.952 | Cr(III)-Cu | 0.307 | 0.122 | 0.996 | 0.577 | 0.061 | 0.974 | 0.844 | 0.017 | 0.958 | Cr(VI) | 0.210 | 0.168 | 0.988 | 0.315 | 0.004 | 0.966 | — | Cr(VI)-Cu | 0.027 | 0.023 | 0.971 | 0.315 | 0.004 | 0.966 | — |
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The unite of is mg·g−1; the unite of is mg·g−1·min−0.5.
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