Research Article
Effects of Cu(II) on the Adsorption Behaviors of Cr(III) and Cr(VI) onto Kaolin
Table 3
Parameters of isotherms for the removal of Cr(III) or Cr(VI) by kaolin in single and binary solutions.
| Adsorbed solution | Langmuir model | Freundlich model | (L·g−1) | (mg·g−1) | | (mg·L·g−1) | 1/n | |
| Cr(III) | 0.083 | 1.018 | 0.991 | 0.308 | 0.764 | 0.958 | Cr(III)-Cu | 0.595 | 1.441 | 0.997 | 0.493 | 0.554 | 0.959 |
| Cr(VI) | 3.367 | 0.878 | 0.985 | 0.628 | 0.293 | 0.956 | Cr(VI)-Cu | 0.134 | 0.595 | 0.978 | 0.070 | 0.710 | 0.912 |
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