Solvent extraction separation of scandium with 4-methyl-3-penten-2-one as its thiocyanate complex

“…Most of them used solvent extraction. Moreover Kalyanaraman and Khopkar [29] evidenced that scandium can be selectively extracted with mesityl oxide as its thiocyanate complex and then recovers in HCl solution. Nonetheless, calcium seemed to be a significant interfering for quantities higher than 25 mg.…”

Section: Introductionmentioning

confidence: 99%

Cyclotron production of high purity 44m,44 Sc with deuterons from 44 CaCO 3 targets

Alliot

Kerdjoudj

Michel

et al. 2015

Nuclear Medicine and Biology

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“…Several separation methods have been described in the literature, each strongly related to the form of the initial target material. Those proposed for separation of scandium comprised mostly solvent extraction (Zhang et al 1997;Vibhute and Khopkar 1985;Rane and Bhatki 1966;Radhakrishnan and Owens 1972;Kalyanaraman and Khopkar 2002). However, for the radioactive isotopes of scandium extraction chromatography is preferred.…”

Section: Chemical Processingmentioning

confidence: 99%

Production of scandium radionuclides for theranostic applications: towards standardization of quality requirements

Mikołajczak

Huclier‐Markai

Alliot

et al. 2021

EJNMMI radiopharm. chem.

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In the frame of “precision medicine”, the scandium radionuclides have recently received considerable interest, providing personalised adjustment of radiation characteristics to optimize the efficiency of medical care or therapeutic benefit for particular groups of patients. Radionuclides of scandium, namely scandium-43 and scandium-44 (43/44Sc) as positron emitters and scandium-47 (47Sc), beta-radiation emitter, seem to fit ideally into the concept of theranostic pair. This paper aims to review the work on scandium isotopes production, coordination chemistry, radiolabeling, preclinical studies and the very first clinical studies. Finally, standardized procedures for scandium-based radiopharmaceuticals have been proposed as a basis to pave the way for elaboration of the Ph.Eur. monographs for perspective scandium radionuclides.

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“…The high molecular weight amines (Amberlite LA-1 or Amberlite LA-2) and long alkyl chain carboxylic acid/organophosphonic ester binary extractant [Sharaf et al 2018] have also been used for the extraction of scandium from malonic acid medium [Dalvi and Khopkar 1979]. A number of noncommercial extractants such as mesityl oxide [Langade amd Shinde 1980], bis(diphenylphosphorylmethylcarbamoyl)alkane [Turanov et al 2011], 4-methyl-3-pentene-2-one [Kalyanaraman and Khopkar 1977] and sec-nonylphenoxyacetic acid [Wang et al 2002] were also used by different authors for the extraction of scandium.…”

Section: Introductionmentioning

confidence: 99%

A systematic study on extraction and separation of scandium using phosphinic acid by both solvent extraction and hollow fibre membrane

Rout

Sarangi

2021

Mineral Processing and Extractive Metallurgy

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A method for separation of scandium and preparation of scandium oxide using hollow fibre supported liquid membrane (HFSLM) was described. Scandium was separated from a multi metal solution bearing copper, nickel, cobalt, zinc, iron, manganese and scandium using bis (2,4,4-trimethylpentyl) phosphinic acid (Cyanex 272) as the mobile carrier. The effect of parameters such as pH, extractant concentration, flow rate, metal ion concentration and strip solution concentration on extraction of scandium was investigated and maximum flux was obtained at pH 2.0, Cyanex 272 concentration of 0.3 M, flow rate of 240 mL/min and 1.0 M H 2 SO 4 in strip solution. From the equilibrium studies the extracted species was determined to be ScR 3 .3RH. A comparative study between solvent extraction and HFSLM has also been carried out to predict the efficiencies of both the techniques for the present system which could be useful for the treatment of industrial wastes bearing very low amount of Sc. It was observed that Sc recovery using Cyanex 272 with HFSLM and solvent extraction was 99.9 and 91%, respectively. Scandium was separated from other metal ions with high separation factors which followed the trend a Sc/Ni < a Sc/Mn < a Sc/Co < a Sc/Zn < a Sc/Fe < a Sc/Cu . High pure scandium oxide (Scandia) was prepared from the strip solution by precipitation with oxalic acid and thermal decomposition at 750°C for 1 h.

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Solvent extraction separation of scandium with 4-methyl-3-penten-2-one as its thiocyanate complex

Cited by 14 publications

References 20 publications

Cyclotron production of high purity 44m,44 Sc with deuterons from 44 CaCO 3 targets

Cyclotron production of high purity 44m,44 Sc with deuterons from 44 CaCO 3 targets

Production of scandium radionuclides for theranostic applications: towards standardization of quality requirements

A systematic study on extraction and separation of scandium using phosphinic acid by both solvent extraction and hollow fibre membrane

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