Table 5.
Percent sorption, Kd and k values of Cu(II) with respect to competitor ions. (0.04 g sorbent, pH of 5.0, 10.0 mL solution volume, 120.0 min contact time, n = 3).
| Ion∗ | Sorption (%) | Kd (mL/g) | k |
|---|---|---|---|
| Cu | 99 | 24.75 | - |
| Al | 87 | 21.75 | 31.11 |
| As | 77 | 19.25 | 35.15 |
| B | 85 | 21.25 | 31.84 |
| Ba | 1.0 | 0.25 | 8855 |
| Be | 51 | 12.75 | 94.80 |
| Ca | 1.0 | 0.25 | 8855 |
| Cd | 1.0 | 0.25 | 8855 |
| Cr | 65 | 16.25 | 45.66 |
| Fe | 72 | 18.0 | 37.60 |
| Hg | 69 | 17.25 | 43.01 |
| Li | 1.0 | 0.25 | 8855 |
| Mg | 39 | 9.75 | 154.0 |
| Mn | 14 | 3.50 | 653.7 |
| Na | 19 | 4.75 | 481.6 |
| Ni | 35 | 8.75 | 167.0 |
| P | 1.0 | 0.25 | 8855 |
| Pb | 68 | 17.0 | 43.64 |
| Sc | 1.0 | 0.25 | 8855 |
| Se | 45 | 11.25 | 112.1 |
| Sr | 17 | 4.25 | 538.0 |
| Ti | 11 | 2.75 | 832.0 |
| Zn | 16 | 4.0 | 572.0 |
∗
Co = 125.0 μg/L for Cu(II), B, Ba, Cr, Cd, Fe, Li, Ti, Zn, 1.25 mg/L for Al, As, Ca, Na, P, Pb, Se, 31.25 μg/L for Be, Mg, Mn, Sc, Sr, and 62.5 μg/L for Hg, Ni ions.