（NH4）2SO4—H2SO4协同淋洗铀的研究

本文阐述了(NH_4)_2SO_4-H_2SO_4混合淋洗剂从饱和树脂中淋洗铀时的“协同”作用及影响“协同”作用的主要因素,初步探讨了协同作用的机理。

STUDY ON SYNERGISTIC ELUTION OF URANIUM WITH (NH_4)_2SO_4-H_2SO_4

This paper describes the synergistic action during elution of uranium from loaded resin with mixed eluting agent (NH4)2SO4-H2SO4 and the main factors influencing synergy. The experimental results indicate that the uranium elution rate with the mixed eluent is considerably greater thanthe sum of elution rates with (NH4)2SO4 and H2SO4 separately under the same concentration r.nd other conditions. The presented eluent is applicable to tertiary amine resin, but not to quaternary ammonium resin. The elution rate and synergistic action depend on the type of resin,composition and concentration of eluting agent and cations of sulphates. The mechanism of synergy is also discussed in this paper. It is restricted by catalysis of acid or alkali and cationic effect.