Solvent Extraction of Scandium from the Waste Solution of TiO2 Production Process

Shibata, Junji; Murayama, Norihiro

doi:10.1007/s12666-016-1008-3

Cited by 9 publications

(1 citation statement)

References 12 publications

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“…Other extractants e.g. Cyanex 302 [Wu et al 2004; Karve and Vaidya 2008], Cyanex 272 [Wang and Li 1994; Karve and Vaidya 2006], D2EHPA [Ochsentihn-Petropulu et al 1995; Singh and Dhadke 2003], PC 88A [Singh and Dhadke 2003], mixture of bis-(2-ethylhexyl)phosphoric acid and TBP [Qiu et al 2019], O, O-bis(2-ethylhexyl) Hydrogen Thiophosphate [Fujinaga et al 2018] and mixture of Versatic Acid 10 (VA10) and Tri-n-butyl phosphate (TBP) [Shibata and Murayama 2017] were also exploited for solvent extraction studies of Sc(III). 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].…”

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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