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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
  1. Experimental conditions: mass of sorbent—0.1 g, volume of solution—25 ml, weight of vanadium in the initial solution—0.3 mg, weight of molybdenum in the initial solution—1 mg, and weight of chromium in the initial solution—0.1 mg.