Treatment | Metal | Freundlich constants and correlation coefficients | |||||
| Sorption | Desorption |
| ||||
Ka | n | r2 | Ka | n | r2 | ||
T1 | Cr | 0.09 | 1.4 | 0.96 | 0.01 | 1.27 | 0.1 |
Zn | 0.04 | 0.71 | 0.72 | 0.011 | 0.93 | 0.9 | |
Cu | 0.05 | 1.3 | 0.92 | 0.012 | 0.97 | 0.99 | |
Pb | 0.06 | 1.22 | 0.95 | 0.014 | 1.02 | 0.98 | |
T2 | Cr | 0.1 | 1.32 | 0.98 | 2.3 × 10−3 | 2.67 | 0.09 |
Zn | 0.03 | 0.67 | 0.93 | 6.59 × 10−4 | 0.33 | 0.4 | |
Cu | 0.03 | 1.16 | 0.91 | 0.013 | 0.98 | 0.99 | |
Pb | 0.06 | 1.23 | 0.93 | 0.013 | 1 | 0.99 | |
T3 | Cr | 0.1 | 1.46 | 0.96 | 2.64 × 10−3 | 3.73 | 0.02 |
Zn | 0.16 | 1.17 | 0.45 | 8.97 × 10−3 | 0.83 | 0.97 | |
Cu | 0.06 | 1.31 | 0.92 | 0.013 | 1.05 | 0.95 | |
Pb | 0.1 | 1.41 | 0.98 | 0.013 | 0.99 | 0.98 |