Liquid-Liquid Extraction of Uranium(VI) with Enanthic, Caprylic, Pelargonie Acids and their Binary Mixtures in Benzene

Abstract

Extraction / Uranium(VI) /Enanthic acid/ Caprylic acid / Pelargonie acid SummaryThe extraction of uranium(VI) into benzene containing enanthic, caprylic and pelargonic acid (HR) 2 has been carried out. Basing on slope analysis, the extracted species are found to be U0 2 R 2 (HR) 2 . The extraction efficiencies of the extradants enanthic (heptanoic), caprylic (octanoic) and pelargonic (nonanoic) acids in the extraction of U(VI) have been compared. The influence of various parameters such as equilibrium pH, extradant concentration on the extraction was found to be in an increasing order with the increase in both the factors. The optimum shaking time was found to be 10 sees for all the three acid extradants. Stripping with various mineral acids, namely aq. HCl, HN0 3 , H2SO4 and HC10 4 , was carried out at different concentrations, where aq. HCl, HN0 3 and HC10 4 gave almost the same trend but with aq. H 2 S0 4 the extraction was quantitative at lower concentration which decreases with increase in acid strength. Synergism with the binary mixture of the extradants was studied and found to be in increasing order upto 0.1 M of the binary mixture, after which it decreases.

Extraction study on uranyl nitrate for energy applications

“…Based on the standard theory of transportation of anions and cations, in solvent extraction the ionic metals are separated due to the variation of chemical potentials among two immiscible phases: organic and aqueous phases. Choice of appropriate solvent is a challenge for the researcher by determining several factors like price, solvating power, chemical strength and selectivity for extraction [3][4][5]. The familiar extractants tri-n-butyl phosphate (TBP), methyl isobutyl ketone (MIBK), methyl isopropyl ketone (MIPK), methyl ethyl ketone (MEK) and di isobutyl ketone (DIBK) are mainly used for separation and purification of rare earth and nuclear reactor materials.…”

Liquid-liquid extraction of plutonium and americium by cekanoic acid from alkaline medium

“…There is no work reported for Am (III) alone or in presence of Pu (IV). The relatively inexpensive and readily available high molecular weight carboxylic acids are known to have great potential to extract a number of metal ions including rare-earths and actinides from different aqueous media [7][8][9][10][11]. Using cekanoic acid extraction of cobalt and manganese were reported [12].…”