Extraction of Lanthanide(iii) and Uranyl(vi) From Nitric Acid Solution by N,n'-Dimethyl-N,n'-Dibutylmalonamide

Nakamura, Takashi; Miyake, Chie

doi:10.1080/07366299508918273

Cited by 58 publications

(12 citation statements)

References 12 publications

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“…These interations limit the coordination of metal ions with the extractants. This supports the findings of Nakamura and Miyake [34] for the extraction of lanthanide(III) and uranyl ions by malonamides in different diluents.…”

Section: E a Mowafy And H F Aly 212supporting

confidence: 90%

“…[34] However, further work is required in this area using more diluents to clarify previous findings. [34] Within this context, it is considered that the donor oxygen of diglycolamide are interacting with the polar aromatic and halogenated diluents, which decreases the coordination and extraction ability of diglycolamides especially for tetravalent actinides and lanthanides compared with n-hexane and n-dodecane, with low polarity parameters and subsequent low interactions with diglycolamides. Our results are in good agreement with that reported for TODGA in other systems.…”

Section: E a Mowafy And H F Aly 212mentioning

confidence: 93%

“…[9,24,37,39] Sasaki et al [9,35,36] suggested that three or four diglycolamide molecules were coordinated for trivalent ion by slope analysis. Narita et al, [22,34] Reference [9] c Reference [24] (2.9M HNO 3 ).…”

Section: Synthesizing Diamides 219mentioning

confidence: 99%

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Synthesis of some N,N,N′,N′‐Tetraalkyl‐3‐Oxa‐Pentane‐1,5‐Diamide and their Applications in Solvent Extraction

Mowafy

Aly

2007

Solvent Extraction and Ion Exchange

111

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A number of novel structurally related diglycolamides compounds were synthesized by a modified efficient method. These compounds were applied to the extraction of selected actinides, lanthanides, and alkaline earth metals from nitric acid solutions using benzene as diluent. The extraction of nitric acid was also studied. The dependence of the extraction distribution ratio, D M, on the length of alkyl chain of the extractants as well as the type of diluents was investigated. The extraction of selected lanthanides, actinides, and divalent metal ions by TODGA and THDGA from nitric acid medium was studied in details. D M of the investigated metal ions has been studied as a function of aqueous HNO 3 concentrations, diglycolamides concentration, and temperature.

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Section: E a Mowafy And H F Aly 212supporting

confidence: 90%

Section: E a Mowafy And H F Aly 212mentioning

confidence: 93%

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Synthesis of some N,N,N′,N′‐Tetraalkyl‐3‐Oxa‐Pentane‐1,5‐Diamide and their Applications in Solvent Extraction

Mowafy

Aly

2007

Solvent Extraction and Ion Exchange

111

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“…2 The dependence of the distribution ratio on the concentration of nitric acid shows that N,N'-dimethyl-N,N'-dibutylmalonamide (DMDBMA) has ability to extract uranyl(VI) ions, while the extracting capacity for lanthanide(III) ions is not enough for the application in practice. 4 The distribution ratios for the extraction of uranium and thorium show second-and third-order dependences, respectively, on the extractant concentration for both the N-alkyl and N,N-dialkyl amides. 5 The results of extraction study suggested the formation of the 1:2:1 uranyl(II) ion, nitrate ion and N,N,N,N-tetrabutylsuccinylamide complex as extracted species.…”

Section: Introductionmentioning

confidence: 99%

“…18 In UO 2 (NO 3 ) 2 extraction with quaternary ammonium nitrate and dialkylphosphinic acid solutions in toluene, the compounds (R 4 N) 2 UO 2 (NO 3 ) 4 and UO 2 A 2 are formed in the organic phase, respectively. 19 Alamine 336 used as extractant for uranium extraction from sulfate solutions was reported.…”

mentioning

confidence: 99%

Solvent extraction studies on uranium using amine based extractants and recovery from low grade ore leach liquors

Kim¹,

Kumar²,

Kim³

et al. 2012

J. Braz. Chem. Soc.

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Neste estudo, extratores à base de amina (Alamine 336, Alamine 308, Alamine 304 e Aliquat 336) diluídos em querosene foram usados para extração de urânio e separação de outros elementos associados. Alamine 336 foi o melhor extrator para o processo de extração de urânio de soluções de sulfato quando comparado com outros reagentes à base de amina, Alamine 308, 304 Alamine 336 e Aliquat 336. O comportamento da extração sinérgica foi estudado com aminas como extratantes assim como reagentes sinergistas e organofosforados usados em misturas sinergistas com aminas. Os estudos de extração sinérgica com aminas não foram adequados entre si para melhor eficiência da extração. No entanto, aminas misturadas com extratores organofosforados forneceram comportamento sinérgico positivo, com um coeficiente de 0,567, calculado a partir de resultados obtidos. A metodologia desenvolvida foi aplicada ao processamento de minério de baixo grau de urânio, e 99,83% de urânio foi recuperado sem interferências de outros metais.In this study, amine based extractants (Alamine 336, Alamine 308, Alamine 304 and Aliquat 336) diluted in kerosene were used as promising extractants for uranium extraction and separation from other associated elements. Alamine 336 was the best extractant for uranium extraction process from sulfate solutions when compared with other amine based extractants, Alamine 308, Alamine 304 and Aliquat 336. Synergistic extraction behavior was studied with amines as extractants as well as synergists and organophosphorus reagents used as synergist mixed with amines. Synergistic extraction studies with amines were not suitable with each other for better extraction efficiency. However, amines mixed with organophosphorus extractants gave positive synergetic behavior with the highest synergistic coefficient 0.567 calculated from results obtained. The developed methodology was applied to uranium low grade ore processing and 99.83% of uranium was recovered without the interferences of other metals.

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Extraction of Actinides and Lanthanides

Roundhill

2001

Extraction of Metals From Soils and Waters

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Extraction of Lanthanide(iii) and Uranyl(vi) From Nitric Acid Solution by N,n'-Dimethyl-N,n'-Dibutylmalonamide

Cited by 58 publications

References 12 publications

Synthesis of some N,N,N′,N′‐Tetraalkyl‐3‐Oxa‐Pentane‐1,5‐Diamide and their Applications in Solvent Extraction

Synthesis of some N,N,N′,N′‐Tetraalkyl‐3‐Oxa‐Pentane‐1,5‐Diamide and their Applications in Solvent Extraction

Solvent extraction studies on uranium using amine based extractants and recovery from low grade ore leach liquors

Extraction of Actinides and Lanthanides

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