Separation behavior of MA(III) from simulated high-level liquid waste using TEHDGA and HONTA impregnated XAD7-HP adsorbents
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To achieve selective adsorption and separation of minor actinides (MA(III)) from lanthanides (Ln(III)), impregnated adsorbents were prepared by loading Amberlite XAD7-HP particles with tetra-2-ethylhexyl diglycolamide (TEHDGA) and hexaoctyl nitrilotriacetamide (HONTA), respectively. Batch experiments were performed to evaluate the adsorption characteristics of TEHDGA/XAD7-HP and HONTA/XAD7-HP adsorbents toward MA(III) and simulated fission products in HNO 3 solutions. Particle-induced X-ray emission analysis confirmed the uniform distribution of Eu(III) on the adsorbent surface. This study establishes a process for separating MA(III) using TEHDGA/XAD7-HP and HONTA/XAD7-HP column systems.
