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Table 3 Adsorption capacity of chitosan-silica composite compared to a partly crosslinked chitosan

From: Synthesis and adsorption properties of chitosan-silica nanocomposite prepared by sol-gel method

Metal pH Ionic form Chitosan-silica composite Partially crosslinked chitosan beads
mmol/g mg/g mmol/g mg/g
Vanadium 2.5 [V10О28]6−, [НV10О28]5−, [Н2V10О28]4− 0.05 2.5 3.59 183.1
Molybdenum 2.5 MoO4 2−, [Mo6O21]6−, [Mo7O24]6− 1.26 121.0 4.04 387.9
Distilled water МоО4 2− 0.39 37.4 1.0 96.5
Chromium Distilled water НCrO4 0.68 35.2 0.95 49.4
  1. Experimental conditions: mass of sorbents—0.1 g and volume of solution—25 ml.