Solvent extraction of thorium from nitric acid solutions using di-N-butyl sulfoxide (DBSO) in xylene

Khan, Muhammad Haleem; Hasany, S. M.; Ali, Akbar; Khan, Muhammad Ali

doi:10.1007/bf02036557

Cited by 17 publications

(3 citation statements)

References 18 publications

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“…Amberlite XAD-16 resin functionalized with nitrosonaphthol was [183] used for the adsorption of Ni(II) and Cu(II) [158] and amberlite XAD-4 resin impregnated with dibenzoylmethane (DBM) was employed in flow injection for the determination of U(VI) from aqueous solution of pH 5.5 [159], the same impregnated with N-benzoylphenylhydroxylamine was utilised in flow injection for the determination of Th(IV) from aqueous solution of pH 4.5 [160]. di-n-butyl sulfoxide (DBSO) was used for the separation of Hf(IV) [161] and Th(IV) [162] by solvent extraction. PAN was used for the separation of Hg [111], IB, IIB and IIIA-VA elements [163] by solvent extraction and U(VI) by adsorption [164].…”

Section: Separation Studiesmentioning

confidence: 99%

Development of radiochemistry in Pakistan – 1960 to 2010

et al. 2012

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Development of radiochemistry / Uranium and thorium chemistry / Nuclear reaction cross section / Radioisotope and radiopharmaceutical production / Neutron activation analysis / Separation studies / PINSTECHSummary. With the inception of Pakistan Atomic Energy Commission (PAEC) in 1956, peaceful uses of atomic energy commenced for the benefit of scientific community as well as masses of Pakistan. Radiochemistry played a vital role right from the beginning. The research and development in this field accelerated soon after the criticality of the first research reactor named as Pakistan Research Reactor (PARR-1) at the Pakistan Institute of Nuclear Science and Technology (PINSTECH), Islamabad. The first radioisotope produced at PARR-1 for application in nuclear medicine was 131 I. Later on, many other radioisotopes were prepared and radiopharmaceuticals were synthesised for their use in industry and hospitals. Besides providing pure radioactive tracers for nuclear medicine, radiochemistry also enhanced the detection limit of impurities at all stages of nuclear fuel cycle for power generation. In 1983, research in the field of nuclear data measurement began. The main aim was to identify suitable conditions for the production of radionuclides for cancer diagnostics, treatment and therapy. With the establishment of a second research reactor (PARR-2) at PINSTECH, research in neutron activation analysis, radioisotope production and separation studies gained more momentum and many research articles were published. Solvent extraction, adsorption and ion-exchange were the main routes of separation in those studies. Separation of heavy metals and treatment of waste generated in a nuclear power plant are other important aspects related to environmental restoration and nuclear waste management, where radiochemistry is required. In future, work in radiochemistry will be continued on similar lines to develop novel radiopharmaceuticals, identify indigenous schemes for nuclear waste management and work out intelligent procedures for material characterization for benefit to mankind, especially the people of Pakistan.

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Section: Separation Studiesmentioning

confidence: 99%

Development of radiochemistry in Pakistan – 1960 to 2010

et al. 2012

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“…It is the only sulfoxide, which is commercially available. In continuation of our previous work [25,26], a systematic study for the extraction of hafnium by DBSO in cyclohexane from nitric acid solution is presented in this communication.…”

Section: Introductionmentioning

confidence: 97%

Liquid-liquid extraction of Hf(IV) from nitric acid with dibutylsulfoxide in cyclohexane

Khan¹,

Ali²

2002

Radiochimica Acta

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Hafnium / Extraction / Dibutylsulfoxide / Cyclohexane / Nitric acid Summary.A liquid-liquid extraction method has been investigated for quantitative extraction of hafnium from 8 M HNO 3 using 50% di-n-butyl sulfoxide (DBSO) dissolved in cyclohexane. The extraction parameters such as nitric acid, DBSO and metal ion concentrations, equilibration time and temperature were optimized. The extraction was found to be independent of metal ion concentration in the range 4.5 × 10 −4 -4.5 × 10 −2 M and inversely dependent upon the temperature. Phosphate, fluoride and oxalate interfere seriously and have almost masked the extraction of Hf(IV) whereas, thiocyanate and bromide have greatly decreased (25%-34%) the extraction. The stoichiometric composition of the extracted species was found to be Hf(NO 3 ) 4 ·2DBSO. Hafnium can be stripped from the organic phase by using 1 M HClO 4 . The proposed method allows the mutual separation of Hf(IV) and Zr(IV) using H 2 O 2 as masking agent for zirconium. The method has also been applied on synthetic mixtures of Hf and Zr for their separation and, the recovery was found to be quantitative.

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“…The extraction of thorium by β-hydroxy naphthaldoxime in presence of neutral donors and the effects of neutral organo-phosphorous compounds on the extraction of thorium by β-hydroxy naphthaldoxime in o-xylene were studied (Banerjee, et al, 2001). The extraction of thorium(IV) from nitric acid solutions by di-n-butyl sulfoxide (DBSO) in o-xylene was evaluated and the extracted species were supposed to be Th(NO 3 ) 4 •2DBSO wherein extraction was found to be almost independent of thorium concentration in the range between 4.3×10 -4 -4.3×10 -2 M and inversely dependent on the temperature factor (Khan, et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Solvent extraction of Thorium(IV) from chloride acidic solution using Schiff base

Orabia

Cheirab

Hassaneinb

et al. 2018

Journal of Scientific Research in Science

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Thorium(IV) is extracted from chloride medium by solvent extraction using a prepared Schiff base chelating agent, (E)-4-(2-hydroxy phenyl imino) pentane-2-one (AcPh) that is synthesized and characterized by FT-IR, 1 H-NMR and elemental analysis. The obtained optimum extraction parameters were 0.02M AcPh/chloroform and diethyl ether ratio mixture, pH 6.5, 3:1 aqueous to organic phase ratio for 5 min. contact time at room temperature. The thorium(IV) was then stripped into aqueous media containing 0.5 M HNO 3 solution using of 1:2 aqueous to organic phase ratio for 7 min. contact time at room temperature.

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Solvent extraction of thorium from nitric acid solutions using di-N-butyl sulfoxide (DBSO) in xylene

Cited by 17 publications

References 18 publications

Development of radiochemistry in Pakistan – 1960 to 2010

Development of radiochemistry in Pakistan – 1960 to 2010

Liquid-liquid extraction of Hf(IV) from nitric acid with dibutylsulfoxide in cyclohexane

Solvent extraction of Thorium(IV) from chloride acidic solution using Schiff base

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