Abstract

Sorption coefficients of Hf, Zr and Nb on nickel-potassium hexacyanoferrate(II) (NF), nickel hexacyanoferrate(II) composite ion exchanger (NCF) and on the ion exchange resins (Dowex-1 and Dowex-50) from inorganic acids solutions were determined. The results obtained indicate that hafnium, zirconium and niobium in dilute sulphuric and hydrochloric acids form anionic and cationic complexes which sorbed on the ion exchangers studied.

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