Separation Factor

Coprecipitation Studies with Ferric Periodate Precipitated from Homogeneous Solution

“…Total iron present in each run was determined by combining the filtrate and precipitate analyses. This gave a mean value of 4.38 ± 0.04 mg. of iron for 23 precipitations in the aluminum study. For cases where more than 90% of the iron was precipitated, better analytical results could be obtained by difference; thus it was not necessary to determine iron in the precipitate.…”

The Chemistry of the Metal Oxalato Complexes.

“…The phenomenon of coprecipitation has received increased attention since the discovery of radiotracers, and the mechanism of such carrying processes (181) is explained in terms of (1) isomorphous replacement, (£) adsorption, (3) anomalous mixed-crystal formation, and (4) internal adsorption. Recent tracer investigations on the rare earth oxalates using Y91, Ce141, Nd147, and Yb169 provide a great deal of information (136,359,428) on the various factors which control coprecipitation with solid solution formation, and on the relationship which exists between distribution coefficients and the solubility products of the precipitated oxalates. Cerium has been shown to form (226) anomalous mixed crystals with lead oxalate.…”

Chemical Understanding of Actinide Separations

“…Separation factors in solid-liquid separations are calculated by dividing the concentration of an element in the solid phase by that in the liquid phase for two different elements, then dividing the larger value by the smaller one. 11 A separation factor greater than one indicates that the elements can be separated. Precipitation processes are generally preferred only when the desired purity can be reached in a single step.…”