The liquid-liquid extraction of neodymium(III) from succinate media (0.06 M) has been studied at pH 6.0 with the solution of 0.1 M of N-n-octylaniline in xylene when equilibrium is maintained for 5 min. The back-extraction of neodymium(III) has been performed by using 0.1 M HClO₄. The effect of various parameters, such as pH, equilibrium time, extractant concentration, stripping agents, organic...

This is a report on the extraction of molybdenum(VI) ions using a supported liquid membrane, prepared by dissolving in kerosene, the extractant Alamine 336 (a long-chain tertiary amine) employed as mobile carrier. A flat hydrophobic microporous membrane was utilised as solid support. Appropriate conditions for Mo(VI) extraction through the liquid membrane were obtained from the results of liqui...

The feasibility of extractive reaction of methacrylic acid from aqueous solution using a quaternary amine, tri–octyl methyl ammonium chloride (TOMAC) as an extractant, was studied. The diluents chosen in the present work belong to different chemical classes, n–butyl acetate, carbon tetrachloride, isoamyl alcohol, methyl isobutyl ketone, and toluene. The effect of initial acid concentration in t...

Modifiers have a broad array of influences on extraction with liquids in standard state, supercritical fluid extraction (SFE), trapping by SFE and supercritical fluid chromatography (SFC). They can significantly change the qualitative and quantitative results. Quantitative and qualitative results can be influenced by different extractants and modifiers in different ways as it was shown by Brond...

In order to determine the optimal technological parameters for obtaining stevia leaf sweet extract, dependence of extractives' yield on temperature and extraction process duration was investigated. A mathematical model has been built that makes it possible predict at different in effectively obtain extractive substances. The expediency using whey from production fermented milk cheese as an extr...

A method for the determination of biomarker fatty acids (C12–C28) in soils' lipids that involves their extraction, chemical modification and gas chromatographic detection with a flame ionization detector (GC-FID) has been developed. This methodology allows to evaluate content free soil (not bound lipids). The extraction from was optimized according following parameters: type extractant, ratio m...

1,1,2,2-Tetrachloroethane is currently used as a chemical intermediate in the production of chlorinated hydrocarbons. In the past, this substance was used as an industrial solvent and extractant and was even a component of a few pesticide formulations; however, its manufacture and use as an end-product appears to have ceased in the United States. Present sources of 1,1,2,2-tetrachloroethane are...

Two components--one resembling intact cholecystokinin in size and charge and immunologic specificity, and the other resembling the COOH-terminal octapeptide of cholecystokinin--have been found in extracts of the pig cerebral cortex. The relative concentrations of the two peptides in the extracts were dependent on the extractant, boiling 0.1 M HCl being more effective than boiling water for the ...

Abstract Amine absorption processes designed to remove acid gases from gas streams generally face a major challenge of solvent degradation. This degradation leads the formation heat-stable salts (HSS), corrosive agents that irreversibly bind free alkanolamine. The present study proposes, for first time, method HSS perstraction using liquid–liquid membrane contactor allows transfer through porou...