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Table 5 Adsorption capacity of chitosan-clinoptilolite and chitosan-saponite composites compared to a pure minerals

From: Natural Minerals Coated by Biopolymer Chitosan: Synthesis, Physicochemical, and Adsorption Properties

Ion Adsorption capacity, mmol/g
Partially crosslinked chitosan-clinoptilolite composite Clinoptilolite Partially crosslinked chitosan-saponite composite Saponite
Zn(II) 0.049 0.048 0.049 0.050
Cu(II) 0.115 0.113 0.131 0.129
Cd(II) 0.107 0.114 0.09 0.14
Pb(II) 0.013 0.012 0.014 0.014
Fe(III) 0.26 0.26 0.26 0.26
  1. Experimental conditions: mass of sorbents—0.1 g, volume of solution—20 ml