Table 4 Dependence of adsorption (R, %) on time of contact with the solutions containing 1 mg of molybdenum at pH 2.5, 1 mg of vanadium, and 200 μg of chromium in the neutral medium
Ions | Degree of adsorption (%) | |||||
|---|---|---|---|---|---|---|
5 min | 10 min | 30 min | 60 min | 90 min | Day | |
Partially crosslinked chitosan-clinoptilolite composite | ||||||
Zn(II) | 46.00 | 46.25 | 46.25 | 46.50 | 46.50 | 32.60 |
Cu(II) | 70.00 | 75.00 | 76.75 | 76.75 | 77.00 | 65.25 |
Cd(II) | 46.90 | 48.70 | 49.60 | 49.90 | 49.90 | 49.50 |
Pb(II) | 89.00 | 89.50 | 94.50 | 94.75 | 94.50 | 97.75 |
Fe(III) | 39.00 | 35.00 | 35.00 | 35.25 | 35.25 | 42.50 |
Partially crosslinked chitosan-saponite composite | ||||||
Zn(II) | 30.25 | 32.00 | 34.50 | 35.25 | 35.25 | 35.33 |
Cu(II) | 72.50 | 77.00 | 77.50 | 80.20 | 80.75 | 81.50 |
Cd(II) | 14.00 | 17.03 | 31.00 | 33.40 | 34.00 | 34.50 |
Pb(II) | 73.25 | 73.50 | 73.75 | 73.75 | 73.75 | 93.25 |
Fe(III) | 39.00 | 50.50 | 50.75 | 50.75 | 51.25 | 70.20 |