Comparison of Fibrous Carboxylic Ion Exchangers in Water Treatment to Remove Heavy Metal Ions

Treatment of drinking water to remove heavy metal ions Pb^{2 +}, Cu^{2 +}, Cd^{2 +}, Co^{2 +}, Ni^{2 +}, and Zn^{2 +} with commercial fibrous carboxylic ion exchangers FIBAN Kh-1, K-3, K-4, and K-5 was studied. Features of metal ion sorption from two-component solutions were determined. A comparative evaluation of the sorption selectivity of FIBAN fibrous ion exchangers with respect to heavy metal ions was made.     

Features of Preparation and Properties of FIBAN K-4 Fibrous Sorbents

Liquid-phase graft polymerization of acrylic acid on polypropylene fiber after preliminary gamma irradiation was studied as influenced by the ratio of the concentration of peroxides formed during gamma irradiation (^{6 0}Co) of polypropylene in air to the Fe(II) concentration in the reaction solution. The ion-exchange and mechanical properties of monofunctional carboxylate cation exchanger prepared by the developed procedure were studied.