Table 2 Degree of adsorption of V(V), Mo(VI), and Cr(VI) oxoanions by composite chitosan-silica as a function of medium acidity
From: Synthesis and adsorption properties of chitosan-silica nanocomposite prepared by sol-gel method
Oxoanion | Degree of adsorption (%) | ||||
|---|---|---|---|---|---|
pH 1.0 | pH 2.5 | pH 5.0 | Distilled water | pH 8.0 | |
HCl | СН 3 СООН | СН 3 СООН | Ammonium acetate buffer | ||
V(V) | 26.09 | 25.00 | 35.87 | 25.00 | 37.23 |
Mo(VI) | 48.12 | 97.25 | 90.60 | 90.95 | 11.61 |
Cr(VI) | 66.07 | 72.48 | 73.30 | 67.75 | 69.37 |