STUDY ON THE APPLICATION OF ACCELERATIVE EFFECT TO THE SEPARATION OF URANIUM ISOTOPES BY CATIONIC ION EXCHANGE

The function of the accelerative effect exerted by succinic acid and calcium ion on the separation of uranium isotope by UO22+-Mal-Na+ ion exchange displacement system was studied.The chromatographic characteristics,separation factor ?and slope coefficient g as well as their temperature coefficients for the UO22+-Mal-Suc-Ca2 + (NH4+ ) displacement system were studied and determined. By comparing the data obtained from the system described above with that from the UO22+-Mal-Na+ displacement system, we found that the g increases by a factor of 63% or g×ε by 37% due to the accelerative effect exerted by succinic acid-Ca2+ on the mass-transfer of UO22+. It was also shown that the UO22+ -Mal-Suc-Ca2+(NH4+) system is more adaptable for obtaining optimum experimental conditions because of its capability to control the pH of the solution involved in uranium-plateau.