A Rapid Elution Method of Tetravalent Plutonium from Anion Exchanger.

An efficient elution method of tetravalent uranium from anion exchanger by using formic acid solution

“…For that purpose, we are investigating an efficient elution method of Pu(IV) and U(IV) from AR-01. There was a reported the adsorbed Pu(IV) was immediately eluted out by formic acid solution from AR-01 [6]. So, it was important to examine the elution behavior of U(IV) by formic acid solution.…”

Separation of rare earths in nitric acid medium by a novel silica-based pyridinium anion exchange resin

“…Although an ion exchange process has many advantages such as organic solvent free and little waste generation, compacted equipment, simple operation procedure and economical improvement [1][2][3], ion exchange technology has not been applied for industrial use as a main rare earths separation process due to its slow adsorption and elution kinetics for conventional anion exchange resins with quaternary ammonium as functional group [4,5], and to the instability of organic resin in a strong acid medium. Generally, anion exchange resins are polymer-based matrix with which a column separation is affected by the swelling and the pressure drop associated with liquids change.…”