Extraction of Fe(III) and U(VI) with 1-Phenyl-3-methyl-4-acyl-pyrazolones-5 from Aqueous Solutions of Different Acids and Complexing Agents. Separation of Fe(III) from U(VI)

Okafor, Emmanuel Chukwuemeka; Uzoukwu, B. A.

doi:10.1524/ract.1990.51.4.167

Cited by 40 publications

(14 citation statements)

References 5 publications

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“…They have been shown to either act as suppressors/inhibitors or releasing agents/enhancers in these extractions at varying concentrations [1-3, 6, 7]. The effects of common acids, ions and auxiliary complexing agents have also been exploited in the separation of various metal ions from aqueous solutions [8,9]. In the extraction of Fe(II) from aqueous solutions using chloroform solution of N,N'-Ethylenebis(4butanoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-oneimine (4,4´-(1E,1E´)-1,1´-(ethane-1,2diylbis(azan-1-yl-1ylidene))bis(5-methyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-ol)) (H2BuEtP) as organic phase, it was reported that pH of 8.25 was optimal pH at which quantitative extraction of Fe(II) was achieved.…”

Section: Introductionmentioning

confidence: 99%

Effect of Common Acids and Anions on the Extraction of Iron (Ii) from Aqueous Solutions into Chloroform Solution Of 4,4´-(1e,1e´)-1,1´-(Ethane-1,2-Diylbis(Azan-1-Yl-1ylidene))Bis(5-Methyl-2-Phenyl-2,3-Dihydro-1h-Pyrazol-3-Ol)

Godwin

Inengite

Chukwu

2014

International Journal of Chemical and Process Engineering Resea

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The effect of common acids, anions, and auxiliary complexing agents in the solvent extraction of Fe 2+ from aqueous solutions into chloroform solutions of 4,4´-(1E,1E´)-1,1´-(ethane-1,2-diylbis(azan-1-yl-1ylidene))bis alone and in the presence of of 1-(3-hydroxy-5-methyl-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl) butan-1-one (HBuP) was studied. Colorimetric method of analysis using 1,10phenanthroline was used to determine concentrations of Fe 2+ in aqueous solutions after extraction and percentage extraction determined by difference. Separation factors βXY were calculated using data from previous studies using same organic phases to determine theoretical conditions for separating Fe 2+ from Ni 2+ , Pb 2+ , and UO2 2+ . All acids gave > 90% extraction of Fe 2+ at most concentrations with HNO3 and H3PO4 giving the highest percentage extraction of 99.93% at 0.01M and 0.1M respectively in the mixed ligands H2BuEtP/HBuP organic system. H3PO4 also gave best extraction of 99.3% at 0.1M in ligand H2BuEtP alone system. Although all anions used for study also gave > 90% extraction of Fe 2+ at different concentration in both types of organic phases, CHCOO -, PO4 3-, Brand tartrate ions gave the best extraction of Fe 2+ with H2BuEtP. Acids and anions behave as salting out agents or masking agents at different concentrations.

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Section: Introductionmentioning

confidence: 99%

Effect of Common Acids and Anions on the Extraction of Iron (Ii) from Aqueous Solutions into Chloroform Solution Of 4,4´-(1e,1e´)-1,1´-(Ethane-1,2-Diylbis(Azan-1-Yl-1ylidene))Bis(5-Methyl-2-Phenyl-2,3-Dihydro-1h-Pyrazol-3-Ol)

Godwin

Inengite

Chukwu

2014

International Journal of Chemical and Process Engineering Resea

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“…The extraction of metal ions from aqueous pH medium using multi-dentate ligands has received quite some attention in recent times [1][2][3][4][5]. The continuous search for better and more efficient ligands has led to the synthesis and characterization of several ligands and Schiff bases [6][7] of which 1-phenyl-3-methyl-4-acyl-pyrazolone-5 and its derivatives have been studied and reported [8].…”

Section: Introductionmentioning

confidence: 99%

Kinetic Studies on the Recovery of Pb2+and UO22+ from Aqueous Solutions into Chloroform Solution of N,N’-Ethylenebis(4-Butanoyl-2,4-Dihydro-5-Methyl-2-Phenyl-3H-Pyrazol-3-Oneimine) Schiff Base

John¹

2014

SJAC

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“…They are used in laser materials as 1 H-NMR shift reagents, in chromatography, in petrochemical industry [30][31][32][33][34] and as dye intermediates. Pyrazolone derivatives (-diketones) are useful reagents in the extraction and separation of metal ions [35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, spectral, and thermal studies of oxomolybdenum(V) Schiff-base complexes derived from heterocyclic β-diketone

Thaker

Barvalia

2010

Journal of Coordination Chemistry

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Six mononuclear Mo(V) Schiff-base complexes were prepared by the reaction of MoCl 5 with Schiff bases, namely HL 1 -HL 3 and HL 4 -HL 6 , such as 5-hydroxy-3-methyl-1(2-chloro)phenyl-1H-pyrazolone-4-carbaldehyde (I), 5-hydroxy-3-methyl-1(3-chloro)phenyl-1H-pyrazolone-4-carbaldehyde (II), and 5-hydroxy-3-methyl-1(3-sulfoamido)phenyl-1H-pyrazolone-4-carbaldehyde (III) with ethanolamine and propanolamine, respectively, in aqueous ethanolic medium. The resulting complexes have been characterized by elemental analyses, molar conductance, FT-IR, 1 H-NMR, electronic, electron spin resonance (ESR) spectra, magnetic susceptibility, and thermal study. The molar conductivity data show them to be non-electrolytes. IR and 1 H-NMR spectral data suggest that the ligand is a dibasic bidentate with ON donor toward metal ion. Electronic, magnetic, and ESR spectral data suggest that the oxomolybdenum(V) complexes have distorted octahedral geometry. One chloride coordinated to molybdenum is confirmed by thermal study.

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Extraction of Fe(III) and U(VI) with 1-Phenyl-3-methyl-4-acyl-pyrazolones-5 from Aqueous Solutions of Different Acids and Complexing Agents. Separation of Fe(III) from U(VI)

Cited by 40 publications

References 5 publications

Effect of Common Acids and Anions on the Extraction of Iron (Ii) from Aqueous Solutions into Chloroform Solution Of 4,4´-(1e,1e´)-1,1´-(Ethane-1,2-Diylbis(Azan-1-Yl-1ylidene))Bis(5-Methyl-2-Phenyl-2,3-Dihydro-1h-Pyrazol-3-Ol)

Effect of Common Acids and Anions on the Extraction of Iron (Ii) from Aqueous Solutions into Chloroform Solution Of 4,4´-(1e,1e´)-1,1´-(Ethane-1,2-Diylbis(Azan-1-Yl-1ylidene))Bis(5-Methyl-2-Phenyl-2,3-Dihydro-1h-Pyrazol-3-Ol)

Kinetic Studies on the Recovery of Pb2+and UO22+ from Aqueous Solutions into Chloroform Solution of N,N’-Ethylenebis(4-Butanoyl-2,4-Dihydro-5-Methyl-2-Phenyl-3H-Pyrazol-3-Oneimine) Schiff Base

Synthesis, spectral, and thermal studies of oxomolybdenum(V) Schiff-base complexes derived from heterocyclic β-diketone

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