Sorption of zirconium out of chloride-fluoride solutions by polyampholytes

摘要

The results of design and experimental data on sorption of zirconium ions out of chloride-fluoride solutions by amine-carboxylic and amine-phosphate ampholytes are considered and discussed. Zirconium in chloride-fluoride solutions is shown to form a number of complex ions (chloride, fluoride, hydroxo- and mixed chloride-fluoride and hydroxo-chloride ones). Equilibrium of zirconium ions during their sorption out of chloride solutions was studied. The analytic dependencies describing the equilibrium process are given. Behavior of zirconium ions during the sorption out of hydrochloric acid solutions in a wide range of its concentrations is explained from the position of ionic metal state in the solution and the structure and functional features of ionites. Conclusions on sorption chemistry are confirmed by the data of IR and spectroscopic studies.