Synergistic extraction of neodymium and carrier-free promethium by the mixture of HDEHP and PC88A

Abstract

Carrier free promethium was produced by proton activation in neodymium target. Extraction behavior of both the elements were studied by HDEHP. A pronounced synergism had been observed by the binary mixture of HDEHP and PC88A. Presence of H202 in aqueous phase also increases the separation factor.

Separation of ND(III), DY(III) and Y(III) by solvent extraction using D2EHPA and EHEHPA

“…The use of different mixtures of acidic organophosphorous extractants in order to improve the extraction efficiency and selectivity of REE has attracted attention in the last decade (Tong et al, 2013;Torkaman et al, 2013;Xiong et al, 2005Xiong et al, ,2005. In order to obtain an optimized extractant system which could decrease the acidity required for stripping the loaded D2EHPA as well as increase the extraction efficiency of EHEHPA, the extraction of REE with mixtures of D2EHPA and EHEHPA has been reported as a promising method (Huang et al, 2008;Nayak et al, 1999;Santhi et al, 1991;Wang et al, 2006;Xinghua et al, 2009;Zhang et al, 2008). Both a higher selectivity and extraction efficiency of REE have been achieved by using mixtures of D2EHPA and EHEHPA (C. Zhang et al, 2014;F.…”

Separation of samarium and neodymium: a prerequisite for getting signals from nuclear synthesis

“…It has been found that distribution coefficients of both samarium and neodymium are in general low and decrease with increasing acid strength. At lower acidity the slightly higher extraction of samarium and neodymium might be attributed to the formation of cationic aqua-complexes like [Ln(H 2 O) x ] 3+ or [Ln(OH)] 2+ , which in turn form complexes with the cationic extractant HDEHP 14 . Fig.…”

Neodymium(III) removal by functionalized magnetic nanoparticles

“…A first overview of the evolution in time of the extraction process shows that neodymium extraction yield increases as a function of time, where the time needed for magnetic nanoparticles to adsorb the maximum Nd(III) is 30 min for both sizes. This short contact time is very interesting for liquid-solid extraction, because in the literature, most studies were done with liquid-liquid extraction such as the studies cited in these references [27][28][29][30][31][32]. …”