|About this Abstract
||Part C-3: Processing of Critical Metals
||W-22: Selective Adsorption of Rare Earth Elements Using Polymeric Adsorbents with Diglycolamic Acid Ligands
||Tomohiro Shinozaki, Takeshi Ogata, Hirokazu Narita, Chiharu Tokoro, Mikiya Tanaka
|On-Site Speaker (Planned)
Rare earth elements (REEs) have supply challenges such as lack of supply diversity. The non-traditional resources which contain relatively dilute concentrations of REEs have gathered attention to secure the reliable supply of REEs. However, high concentrations of base metals coexist in most of the resources and prevent the effective recovery of REEs. Therefore, we have developed a novel polymeric adsorbent modified with diglycolamic acid ligands for the selective recovery of REEs. Polymeric particles were prepared by suspension polymerization of styrene, divinylbenzene, and glycidyl methacrylate in the presence of diluents. The obtained particles were functionalized with amino groups, and then diglycolamic acid ligands. It was found that the synthesized polymeric adsorbents adsorbed REEs selectively from a solution where the high concentrations of base metals coexist. The adsorption behavior was affected by the pore characteristics of the polymeric adsorbents which depended on the diluents composition during the suspension polymerization.
||Planned: At-meeting proceedings