Extraction of ternary complexes of thorium(IV) with 3-phenyl-4-benzoyl-5-isoxazolone and neutral donors from nitric acid medium

Thakur, P.; Veeraraghavan, R.; Mohapatra, P. Κ.; Manchanda, V. Κ.; Dash, K.

doi:10.1016/0039-9140(96)01883-8

Cited by 37 publications

(21 citation statements)

References 10 publications

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“…The raffinate contained Th-234 activity with traces of U. Decontamination from the residual U was achieved by extracting the Th-234 with 0.5 M HPBI (3-phenyl-4-benzoyl-5-isoxazolone), as reported earlier (17). Studies with Th 4þ ion carrier were carried out using nitrate salts of natural Th and spiking with the radiotracer.…”

Section: Th-234 Stockmentioning

confidence: 99%

“…Th-234 tracer (t 1=2 ¼ 24 days) was used after freshly obtaining the radiotracer from natural uranium by a procedure reported earlier (17). A feed containing 200 g=L natural U in 6 M HCl was contacted with three successive lots of 30% Aliquat 336 in chloroform.…”

Section: Th-234 Stockmentioning

confidence: 99%

“…Assaying of Th-234 was done by gamma counting of the 63 and 93 keV peaks using NaI(Tl) scintillation detector. Analysis of Th in case of studies involving the Th carrier solution was done using a spectrophotometric method involving Arsenazo III (17).…”

Section: Th-234 Stockmentioning

confidence: 99%

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Transport of Thorium(IV) Across a Supported Liquid Membrane Containing N,N,N′,N′-Tetraoctyl-3-oxapentanediamide (TODGA) as the Extractant

Panja

Mohapatra

Tripathi

et al. 2010

Separation Science and Technology

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The transport behavior of Th 4þ was investigated from a feed containing 3.0 M HNO 3 into a receiver phase containing 0.1 M oxalic acid across a PTFE flat sheet supported liquid membrane (SLM) which contained TODGA (N,N,N 0 ,N 0 -Tetraoctyl-3-oxapentanediamide) in n-dodecane as the extractant. Effects of the nature of the strippant, extractant concentration, Th concentration in the feed, and feed acidity on the transport rates were investigated. The transport behavior apparently depended on the rate of extraction of the metal ion at the feed-membrane interface and was not diffusion controlled. Influence of Th concentration on flux was also investigated. Transport mechanism was elucidated and the diffusion coefficient was calculated to be 2.13 Â 10 À7 cm 2 / s. Solvent extraction studies at varying feed acidity and TODGA concentration were also carried out.

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Section: Th-234 Stockmentioning

confidence: 99%

Section: Th-234 Stockmentioning

confidence: 99%

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Transport of Thorium(IV) Across a Supported Liquid Membrane Containing N,N,N′,N′-Tetraoctyl-3-oxapentanediamide (TODGA) as the Extractant

Panja

Mohapatra

Tripathi

et al. 2010

Separation Science and Technology

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“…241 Am was purified by the procedure given elsewhere [20]. 234 Th is a daughter product of 238 U and, therefore, it is separated from the natural uranium [21]. Uranium solution at 8 M HCl was loaded in 30% aliquat 336 (tricapryl methyl ammonium chloride) dissolved in chloroform.…”

Section: Chloromethylatedmentioning

confidence: 99%

A novel malonamide grafted polystyrene-divinyl benzene resin for extraction, pre-concentration and separation of actinides

Ansari¹,

Mohapatra²,

Manchanda³

2009

Journal of Hazardous Materials

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“…Thorium estimation was done by spectrophotometry using Arsenazo III as the chromogenic agent. 15 The distribution ratio values (D) were obtained from the ratio of the concentration of metal ion in the PEGrich phase per unit volume to that in the salt-rich phase. The separation studies using 241Am and 152,154Eu were carried out by taking the tracers in separate tubes and carrying out the experiments under identical conditions.…”

Section: Distribution Studiesmentioning

confidence: 99%

Extraction of actinides and fission products from salt solutions using polyethylene glycols (PEGs)

Pawaskar

Mohapatra

Manchanda³

1999

J Radioanal Nucl Chem

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The extraction behavior of several metal ions viz., Am 3+, Eu 3+, UO22+, Th 4+, Sr 2+ and Cs + was investigated from sulphate medium employing phosphotungstic acid (PTA) and polyethylene glycol (PEG). The influence of various parameters such as pH, PTA concentration, PEG concentration and salt concentration was studied. The order of extraction followed the trend: Am3+>Eu3+>>Th4+>UOz2+>Sr2+>Cs + which deviate significantly from the reported order with conventional solvents. The relatively poor extraction of UO22+, Sr 2+ and Cs + was ascribed to their lack of interaction with the phosphotungstate anion. The separation behaviour of Am 3+ vis-a-vis Eu 3+ was also investigated under different experimental conditions.

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Extraction of ternary complexes of thorium(IV) with 3-phenyl-4-benzoyl-5-isoxazolone and neutral donors from nitric acid medium

Cited by 37 publications

References 10 publications

Transport of Thorium(IV) Across a Supported Liquid Membrane Containing N,N,N′,N′-Tetraoctyl-3-oxapentanediamide (TODGA) as the Extractant

Transport of Thorium(IV) Across a Supported Liquid Membrane Containing N,N,N′,N′-Tetraoctyl-3-oxapentanediamide (TODGA) as the Extractant

A novel malonamide grafted polystyrene-divinyl benzene resin for extraction, pre-concentration and separation of actinides

Extraction of actinides and fission products from salt solutions using polyethylene glycols (PEGs)

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