Solvent Extraction of Indium, Gallium, and Zinc Ions with Acidic Organophosphates having Bulky Alkyl Groups

Nakamura, Takahide; Sakai, Asami; Nishihama, Syouhei; Yoshizuka, Kazuharu

doi:10.1080/07366290902967017

Cited by 24 publications

(17 citation statements)

References 11 publications

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“…A follow-up study was also done using LCD waste as the starting material instead of ITO [8,9]. Solvent extraction equilibriums of metals found in zinc refinery residues (In 3+ , Ga 3+ ) with D2EHPA and two similar extractants have also been investigated by Nakamura et al [10].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Indium Recovery and Separation from LCD Waste by Solvent Extraction with Bis(2-ethylhexyl) Phosphate (D2EHPA)

Yang

Ekberg

Retegan

2014

International Journal of Chemical Engineering

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Indium tin oxide (ITO) is currently the choice of electrode material in liquid crystal displays (LCDs). D2EHPA is known to be an extractant that can be used to selectively recover indium from 1 M sulfuric acid. In order to optimize the extraction and separation of indium from LCD waste, the effects of pH, temperature, time, and extractant concentration on the distribution ratios of In(III) and the major impurities such as Al(III), Cu(II), Fe(III), and Zn(II) were investigated. Metal concentrations in the aqueous feed were based on the concentrations found in the leach liquor of LCD panel glass at 0.1 g/mL S/L ratio. This study showed that extraction of indium could be increased at <293 K and stripping of indium could be increased at >293 K. Furthermore, by increasing D2EHPA concentration from 0.1 M to 0.25 M, extraction of indium could be increased from 70% to >95%.

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Section: Introductionmentioning

confidence: 99%

Optimization of Indium Recovery and Separation from LCD Waste by Solvent Extraction with Bis(2-ethylhexyl) Phosphate (D2EHPA)

Yang

Ekberg

Retegan

2014

International Journal of Chemical Engineering

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“…Phosphoric acid extractants are available for the extraction of indium(III). Di (2-ethylhexyl) phosphoric acid (D2EHPA) shows high selectivity for indium(III) over gallium [3][4][5][6][7]. PC-88A is also used for the extraction of indium(III) from sulfuric acid solution [8,9].…”

Section: Solvent Extraction Research and Development Japan Vol 17mentioning

confidence: 99%

Synthesis of New Extractants Containing a Carboxylic Acid Group and Their Extraction Equilibria with Indium(III), Gallium(III) and Zinc(II)

Kai

Oshima

Baba

2010

SERDJ

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“…1,5,6 Molybdenum(VI) forms complexes with various natural organic ligands, such as polyphenols and their functional derivatives, polyhydroxycarboxylic acids, aminopolycarboxylic acids, hydroxamic acids, amines (primary, secondary and tertiaty), 8-hydroxyquinoline and its derivatives, aldehyde hydrazones, oximes, β-diketones, fluorones, hydroxyazodyes, biomolecules (chitosan, chitin, D-glucosamine, L-alanine, L-phenylalanine). [7][8][9][10][11][12][13][14][15][16][17][18][19][20] Molybdenum(VI) gives colored chelates with aromatic compounds, containing two or more hydroxyl groups in ortho position relative to each other. The colored anionic chelates of molybdenum(VI) form ion-associated complexes Stojnova et al: Study on the Chelate Formation and ... with bulky organic cations, like methyltrioctylammonium, cetylpyridinium, cetyltrimethylammonium, tetraphenylammonium tetraphenylphosphonium.…”

Section: Introductionmentioning

confidence: 99%

Study on the Chelate Formation and the Ion-association of Anionic Chelate of Molybdenum(VI) with 3,5-Dinitrocatechol and Monotetrazolium Cation

Stojnova

Divarova

Racheva

et al. 2018

ACSi

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The equilibria of the chelate formation and ion-association in the liquid-liquid extraction system Mo(VI)-3,5-DNC-INT-H 2 O-CHCl 3 were studied by spectrophotometry. The optimum conditions for the chelate formation and extraction of the ion-associated complex formed between the anionic chelate of Mo(VI)-3,5-dinitrocatechol (3,5-DNC) and the cation of 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyl-2H-tetrazolium chloride (INT) were established. The validity of Beer's law was checked and some analytical characteristics were calculated. The effect of various co-existing ions and reagents on the process of complex formation was investigated. The molar ratio of the components in the ternary ion-associated complex Mo(VI)-3,5-DNC-INT was determined by independent methods. The association process in aqueous phase and the extraction equilibria were investigated and quantitatively characterized. The following key constants of the processes were calculated: association constant, distribution constant, extraction constant and recovery factor. Based on this, a reaction scheme, a general formula and a structure of the complex were suggested.

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Solvent Extraction of Indium, Gallium, and Zinc Ions with Acidic Organophosphates having Bulky Alkyl Groups

Cited by 24 publications

References 11 publications

Optimization of Indium Recovery and Separation from LCD Waste by Solvent Extraction with Bis(2-ethylhexyl) Phosphate (D2EHPA)

Optimization of Indium Recovery and Separation from LCD Waste by Solvent Extraction with Bis(2-ethylhexyl) Phosphate (D2EHPA)

Synthesis of New Extractants Containing a Carboxylic Acid Group and Their Extraction Equilibria with Indium(III), Gallium(III) and Zinc(II)

Study on the Chelate Formation and the Ion-association of Anionic Chelate of Molybdenum(VI) with 3,5-Dinitrocatechol and Monotetrazolium Cation

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