Generalized Pitzer-Debye-Hückel (PDH) Framework for the Deep Eutectic Solvent Assisted Extraction of Europium (III), Americium (III), and Uranium (VI)

Abstract

ABSTRACT This study focuses on modeling of deep eutectic solvents (DESs) assisted liquid-liquid-extraction of Am(III), U(VI), Eu(III). In the present work, DESs are having tri – n octyl phosphine oxide (TOPO) and choline chloride acetate as hydrogen bond acceptor and malonic acid, oxalic acid and glycolic acid as hydrogen bond donor. The UNIQUAC-extended-PDH* model is used in the extraction formulation incorporating weak long-range interactions and short-range interactions. Metaheuristic algorithm, such as genetic algorithm, is employed for the determination of thermodynamically consistent binary interaction parameters using a pool of 40 tielines across six systems. The estimation of efficiency evaluation and extraction quantification contributes to a deeper understanding of the behavior of deep eutectic solvents in the extraction of lanthanides and actinides.