Diglycolamic acid coated cation exchange adsorbent for uranium removal by extraction chromatography

This paper highlights the development of an extraction chromatography-based recovery of uranium using a diglycolamic acid-coated polymeric resin from low-concentration uranium- bearing solutions. Factors controlling uranium separation have been examined as a function of the pH of the aqueous medium, interfering ions, uranium concentration in the aqueous phase, duration of contact of the resin with the aqueous phase, etc. The adsorption kinetics and isotherm models are modeled with the pseudo-first and the pseudo-second-order adsorption kinetics. The outcome of the batch and column-based adsorption studies corroborates the prospect of using diglycolamic acid-coated polymeric resin to separate uranium from low-concentration feeds.

Automated summary

This paper presents a study on the extraction chromatography-based recovery of uranium using a diglycolamic acid-coated polymeric resin from low-concentration uranium-bearing solutions. Various factors, such as pH, interfering ions, uranium concentration, and contact duration, have been investigated to control the separation of uranium. The adsorption kinetics and isotherm models are evaluated using the pseudo-first and the pseudo-second-order adsorption kinetics. The results of batch and column-based adsorption studies support the potential of using diglycolamic acid-coated polymeric resin for uranium separation from low-concentration feeds.