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Sorption of Vanadium (V) and Chromium (VI) Ions by Anion Exchanger Based on an Oligomers of Epichlorohydrin and 4-Vinylpyridine
Ð. Pidakhmet, E. E. Ergozhin, T. K. Chalov and A. I. Nikitina
The new macropore anion exchange resin was synthesized by polycondensation of epichlorohydrin oligomer and 4-vinylpyridine, the static exchange capacity (SEC) of which is equal to 6.75 mg-equiv g-1 in 0.1 M HCI solution and the sorption of vanadium (V) and chromium (VI) ions were studied. The influence of the concentration and pH of the model solutions of ammonium metavanadate and potassium dichromate, contact time on the sorption activity of new anion exchangers ECHO-VP to vanadium (V) and chromium (VI) ions were investigated. Structure of the surface anion exchanger was studied by electronic microscopy method.
