Ion-exchange behavior of a number of elements on a phosphonic acid cation exchanger in hydrochloric acid solutions

The distribution coefficients of 23 elements between the macroporous phosphonic acid cation exchanger KRF-20t-60 and hydrochloric acid solutions with concentrations ranging from 0.1-2.0 M have been determined by a static method. The KRF-20t-60 cation exchanger has a high affinity toward Fe(III), Sc(III), and Ti(IV) ions. A discussion of the results obtained and the possibilities of their use for the separation of various elements has been carried out. An example of the removal of trace amounts of beryllium from macroscopic quantities of lithium has been presented.