LIQUID-LIQUID EXTRACTION OF BERYLLIUM: II. STUDIES OF BERYLLIUM–THIOCYANATE EXTRACTION

1963 ◽  
Vol 41 (1) ◽  
pp. 112-116 ◽  
Author(s):  
Wendell J. Biermann ◽  
Robert McCorkell
Keyword(s):  
Organic Solvents ◽  
Liquid Extraction ◽  
Inert Gas ◽  
Good Recovery ◽  
Countercurrent Extraction ◽  
Experimental Conditions ◽  
Batch Studies ◽  
Effective Separation ◽  
Liquid Liquid Extraction ◽  
Thiocyanate Solution

The partition of beryllium and aluminum between aqueous thiocyanate solutions and several organic solvents was determined under a variety of experimental conditions. From these batch studies it was concluded that a two-solvent countercurrent extraction of beryllium from a thiocyanate solution should give good recovery of beryllium with effective separation from aluminum and, by inference, other inert gas configuration cations.

scholarly journals EXTRACTION OF COLORED SUBSTANCES FROM MATE (ILEX PARAGUARIENSIS)

1998 ◽  
Vol 6 (6) ◽  
pp. 45-51
Author(s):  
Vania Regina Gabbi Polli ◽  
Alnei Ramos Prochnow ◽  
Juliane Zimmernan Tamanini
Keyword(s):  
Organic Solvents ◽  
Diethyl Ether ◽  
Sodium Lauryl Sulfate ◽  
Extraction Process ◽  
Liquid Extraction ◽  
Ilex Paraguariensis ◽  
Lauryl Sulfate ◽  
Liquid Liquid Extraction

Liquid-liquid extraction of pigments present in mate (flex Paraguariensis) was studied using various organic solvents and different concentrations. The best results were obtained using diethyl ether and sodium lauryl sulfate. The effect of the addition of ethanol on the extraction process was also analyzed.

scholarly journals Surfactant-enhanced heterogeneity of the aqueous interface drives water extraction into organic solvents

2019 ◽  
Vol 21 (6) ◽  
pp. 2866-2874 ◽  
Author(s):  
Michael J. Servis ◽  
Aurora E. Clark
Keyword(s):  
Organic Solvents ◽  
Organic Phase ◽  
Liquid Extraction ◽  
Water Extraction ◽  
Liquid Liquid Extraction

Liquid/liquid extraction (LLE) is one of the most industrially relevant separations methods. Adsorbed surfactant is demonstrated to enhance interfacial heterogeneity and lead to water protrusions that form the basis for transport into the organic phase.

scholarly journals Comparison of the Partition Efficiencies of Multiple Phenolic Compounds Contained in Propolis in Different Modes of Acetonitrile–Water-Based Homogenous Liquid–Liquid Extraction

Molecules ◽  
2019 ◽  
Vol 24 (3) ◽  
pp. 442 ◽  
Author(s):  
Wenbin Chen ◽  
Xijuan Tu ◽  
Dehui Wu ◽  
Zhaosheng Gao ◽  
Siyuan Wu ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Caffeic Acid ◽  
Extraction Methods ◽  
Reversed Phase ◽  
Liquid Extraction ◽  
Subzero Temperature ◽  
Experimental Conditions ◽  
Salting Out ◽  
Liquid Liquid Extraction ◽  
Water Based

Homogeneous liquid–liquid extraction (HLLE) has attracted considerable interest in the sample preparation of multi-analyte analysis. In this study, HLLEs of multiple phenolic compounds in propolis, a polyphenol-enriched resinous substance collected by honeybees, were performed for improving the understanding of the differences in partition efficiencies in four acetonitrile–water-based HLLE methods, including salting-out assisted liquid–liquid extraction (SALLE), sugaring-out assisted liquid–liquid extraction (SULLE), hydrophobic-solvent assisted liquid–liquid extraction (HSLLE), and subzero-temperature assisted liquid–liquid extraction (STLLE). Phenolic compounds were separated in reversed-phase HPLC, and the partition efficiencies in different experimental conditions were evaluated. Results showed that less-polar phenolic compounds (kaempferol and caffeic acid phenethyl ester) were highly efficiently partitioned into the upper acetonitrile (ACN) phase in all four HLLE methods. For more-polar phenolic compounds (caffeic acid, p-coumaric acid, isoferulic acid, dimethoxycinnamic acid, and cinnamic acid), increasing the concentration of ACN in the ACN–H2O mixture could dramatically improve the partition efficiency. Moreover, results indicated that NaCl-based SALLE, HSLLE, and STLLE with ACN concentrations of 50:50 (ACN:H2O, v/v) could be used for the selective extraction of low-polarity phenolic compounds. MgSO4-based SALLE in the 50:50 ACN–H2O mixture (ACN:H2O, v/v) and the NaCl-based SALLE, SULLE, and STLLE with ACN concentrations of 70:30 (ACN:H2O, v/v) could be used as general extraction methods for multiple phenolic compounds.

scholarly journals Extraction of Nb(v) by quaternary ammonium-based solvents: toward organic hexaniobate systems

2016 ◽  
Vol 45 (48) ◽  
pp. 19351-19360 ◽  
Author(s):  
Gauthier J-P. Deblonde ◽  
Alexandre Chagnes ◽  
Marie-Aude Roux ◽  
Valérie Weigel ◽  
Gérard Cote
Keyword(s):  
Organic Solvents ◽  
Quaternary Ammonium ◽  
Liquid Extraction ◽  
Extraction System ◽  
Liquid Liquid Extraction

A new liquid–liquid extraction system has been developed for the rapid and easy transfer of hexaniobates (HxNb6O19x−8) into organic solvents.

scholarly journals Extractive purification of hydro-treated gas oil with N-methylpyrrolidone

2017 ◽  
Vol 82 (1) ◽  
pp. 107-116
Author(s):  
Kahina Bedda ◽  
Boudjema Hamada ◽  
Nikolay Kuzichkin ◽  
Kirill Semikin
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Nitrogen Content ◽  
Aromatic Hydrocarbons ◽  
Diesel Fuel ◽  
Liquid Extraction ◽  
Gas Oil ◽  
Experimental Conditions ◽  
Clean Diesel ◽  
Liquid Liquid Extraction ◽  
Polycyclic Aromatic

The purification of a hydrotreated gas oil by liquid-liquid extraction with N-methylpyrrolidone as solvent has been studied. The results showed that this method, under appropriate experimental conditions, has reduced sulphur content of the gas oil from 174 ppm to 28 ppm, nitrogen content has decreased from 58 ppm to 15 ppm, aromatics content has diminished from 27.1 % to 13.8 % and the polycyclic aromatic hydrocarbons were totally extracted. The refined gas oil obtained can be used to produce clean diesel fuel for the environment.

A Bioanalytical Method for Eliglustat Quantification in Rat Plasma

2019 ◽  
Vol 57 (7) ◽  
pp. 600-605 ◽  
Author(s):  
Venkata Krishna Reddy ◽  
Narayana Swamy ◽  
Rajeswari Rathod ◽  
Pinaki Sengupta
Keyword(s):  
Extraction Method ◽  
Ammonium Acetate ◽  
Rat Plasma ◽  
Liquid Extraction ◽  
Good Recovery ◽  
Sprague Dawley ◽  
Bioanalytical Method ◽  
Liquid Liquid Extraction ◽  
Dose Oral ◽  
First Time

Abstract A simple and sensitive bioanalytical HPLC–UV method has been developed and validated for quantification of eliglustat in rat plasma. The liquid–liquid extraction method was found to be more efficient compared to protein precipitation technique. Chromatographic separation of eliglustat was achieved using Kromasil C18 column with a mobile phase consisting of a mixture of methanol and ammonium acetate (pH 3.2) in a ratio of 60:40. Detection wavelength was set at 282 nm. The developed method was specific, accurate, precise with good recovery and stability profile. The calibration curve constructed over a range of 0.3–10 μg/mL was linear (R2 > 0.997). Accuracy in intra and inter-day assay were found to be 96.27–107.35% and 96.80–106.57%, respectively. The corresponding precision (%CV) values were within 4.31–10.90% and 4.82–9.97%, respectively. Till date, no method is available for bioanalysis of eliglustat in any type of biological matrix. This is the first time to report a bioanalytical method for this molecule. The developed bioanalytical method was applied to quantitate eliglustat in the plasma samples of a single dose oral pharmacokinetic study in Sprague Dawley rat.

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