scholarly journals Extraction and separation of titanium(IV) with D2EHPA and PC-88A from aqueous perchloric acid solutions

2002 ◽  
Vol 67 (7) ◽  
pp. 507-521 ◽  
Author(s):  
Rajeev Singh ◽  
Purshottamm Dhadke
Keyword(s):  
Liquid Extraction ◽  
Acid Solutions ◽  
Extraction And Separation ◽  
Slope Analysis ◽  
Liquid Liquid Extraction ◽  
Quantitative Extraction ◽  
Aqueous Perchloric Acid ◽  
Loaded Organic Phase ◽  
Species Being

The liquid-liquid extraction of Ti(IV) from perchlorate media using di(2-ethylhexyl) phosphoric acid (D2EHPA) and 2-ethylhexyl prosphonic acid mono-2-ethylhexyl ester (PC-88A) in toluene as the extractant was studied Quantitative extraction of Ti(IV) was observed in the lower acidity range of 0.01 to 0.1 mol dm-3 with 0.003 mol dm-3 D2EHPA and 0.01 mol dm-3 PC-88A in toluene, respectively, and in the higher acidity range of 9.0 to 10.0 mol dm-3 with 0.1 mol dm-3 D2EHPA and PC-88A in toluene. Ti(IV) was completely stripped from the metal loaded organic phase of both the extractants with 3%H2O2 in 1M H2SO4 and determined spectrophotometrically. The stoichiometry of the extracted species was determined on the basis of slope analysis. The extraction in the lower acidity range was found to proceed by a cation-exchange mechanism with the extracted species being TiOR2.2HR while in the higher acidity range it was by solvation with the extracted species being Ti(OH)3ClO4.4HR. Separation of Ti(IV) was also carried out from some associated metals like Fe(III), Al(III), V(V), Ce(IV), Mg(II) and Mn(II). The developed methods were extended for the determination of Ti(IV) in real samples like ilmenite, magnetite and red mud in order to show the practical utility of the extractants.

scholarly journals Development of a Reliable Analytical Method for Liquid Anion-Exchange Extraction and Separation of Neodymium(III)

2012 ◽  
Vol 2012 ◽  
pp. 1-7
Author(s):  
Balasaheb N. Kokare ◽  
Ganesh S. Kamble ◽  
Balasaheb M. Sargar ◽  
Mansing A. Anuse
Keyword(s):  
Volume Ratio ◽  
Selective Extraction ◽  
Liquid Extraction ◽  
Back Extraction ◽  
Extractant Concentration ◽  
Extraction And Separation ◽  
Slope Analysis ◽  
Liquid Liquid Extraction ◽  
Exchange Extraction ◽  
Reliable Analytical Method

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 diluents, and aqueous to organic volume ratio on the extraction of neodymium(III) has been studied. On the basis of slope analysis, the stoichiometry of the extracted species was determined as 1 : 1 : 2[RR′NH2+Nd(succinate)2-](org). The method is free from interference of large number cations and anions. The method was used for the selective extraction of neodymium(III) from its binary mixture with U(VI), Zr(IV), Nb(V), La(III), Th(IV), Ce(IV), and Y(III). The proposed method is selective and was successfully applied to the synthetic mixtures to show the practical utility of the extractant.

scholarly journals N-n-octylaniline as a new reagent for analytical liquid-liquid extraction of yttrium(III) from matrices of various metal ions

2011 ◽  
Vol 30 (2) ◽  
pp. 151
Author(s):  
Balasaheb N. Kokare ◽  
Aniruddha M. Mandhare ◽  
Sanjay S. Kolekar ◽  
Mansing A. Anuse*
Keyword(s):  
Solvent Extraction ◽  
Hydrochloric Acid ◽  
Metal Ion ◽  
Liquid Extraction ◽  
Alizarin Red ◽  
Slope Analysis ◽  
Binary Separation ◽  
Extraction Behavior ◽  
Liquid Liquid Extraction ◽  
Species Being

A systematic study of solvent extraction behavior of yttrium(III) with N-n-octylaniline from salicylate media was carried out. Yttrium(III) was quantitatively extracted from 0.02–0.05 mol dm–3 NaSal at pH 9.7 – 10.5 with 0.17 mol dm–3 N-n-octylaniline in xylene. The extraction was found to proceed by an anion exchange mechanism with the extraction species being [CH3(CH2)7(C6H5)NH2+Y(C7H4O3)2–] ascertained on the basis of slope analysis. The extracted metal ion was separated by selective stripping with hydrochloric acid or perchloric acid from the metal loading organic phase and estimated spectrophotometrically following a complexation with Alizarin Red S. A binary separation of yttrium(III) from Th(IV), U(VI), Zr(IV), Nb(V), La(III), Nd(III), Ce(IV) and Gd(III) is discussed.

Extraction and determination of synthetic food dyes using tetraalkylammonium based liquid-liquid extraction

2021 ◽  
Vol 162 ◽  
pp. 105833
Author(s):  
Svetlana V. Smirnova ◽  
Kristina A. Lyskovtseva ◽  
Igor V. Pletnev
Keyword(s):  
Liquid Extraction ◽  
Liquid Liquid Extraction ◽  
Food Dyes

Salting‐out assisted liquid–liquid extraction with dansyl chloride for the determination of biogenic amines in food

2019 ◽  
Vol 55 (1) ◽  
pp. 248-258 ◽  
Author(s):  
Karen C. A. Francisco ◽  
Pedro F. Brandão ◽  
Rui Miguel Ramos ◽  
Luís Moreira Gonçalves ◽  
Arnaldo A. Cardoso ◽  
...  
Keyword(s):  
Biogenic Amines ◽  
Liquid Extraction ◽  
Dansyl Chloride ◽  
Salting Out ◽  
Liquid Liquid Extraction
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