Results 151 to 160 of about 535 (180)
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Stoichiometric relation for the extraction of the gold-thiourea complex with D2EHPA
Hydrometallurgy, 1995Abstract The stoichiometric relation for the solvent extraction of gold from acidic thiourea solutions was studied with di(2-ethylhexyl) phosphoric acid (D2EHPA). The results showed that the gold-thiourea complex was solvated with five molecules of the D2EHPA monomer and that the extracted species were not associated with each other.
Sung-Gyu Kim +3 more
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Structure formation in LnCl3-H2O-D2EHPA-Solvent systems
Theoretical Foundations of Chemical Engineering, 2015The structure formation in aqueous and organic phases during extraction of REEs by D2EHPA solutions has been studied. It has been shown that the limiting stress of shear increases; in addition, the limiting stress of shear for organic phase is far higher than that for the aqueous phase.
N. F. Kizim +2 more
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Reactive Zinc Extraction with D2EHPA in a Kühni Miniplant Column
Chemical Engineering & Technology, 2018AbstractReactive extraction of Zn2+ with di‐(2‐ethylhexyl) phosphoric acid (D2EHPA) was examined in a multistage countercurrent extraction column of type Kühni. Hydrodynamics and mass transfer for the reactive European Federation of Chemical Engineering (EFCE) test system were comprehensively experimentally investigated in a DN32 Kühni miniplant column.
Christian Korb +2 more
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Droplet phenomena in the Ni/Na/D2EHPA/H2O system
Metallurgical Transactions B, 1977Droplet behavior in the liquid-liquid extraction of nickel by mixtures of the sodium and hydrogen forms of di-2-ethylhexylphosphoric acid in toluene is reported. Mass transfer to single drops of organic phase dispersed in the aqueous has been measured.
K. Durrani, C. Hanson, M. A. Hughes
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Solvent Extraction of Copper Using TBP, D2EHPA and MIBK
Russian Journal of Non-Ferrous Metals, 2018In this research, a synergetic system of solvent extraction process was developed to recover copper from aqueous solutions with tri-n-butyl phosphate (TBP), di-2-ethyl hexyl phosphoric acid (D2EHPA) and methyl iso-butyl ketone (MIBK). The effect of significant parameters such as pH, organic phase composition, aqueous to organic phase ratio (A : O ...
null Mehdi Irannajad +2 more
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The spectrophotometric determination of D2EHPA
AIP Conference Proceedings, 2019K. L. Popilovskaya +2 more
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Some physico-chemical properties of D2EHPA
Hydrometallurgy, 2003R.K. Biswas, R.A. Banu, M.N. Islam
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D2EHPA treated resin for the extraction of rare earth elements
Indian Chemical Engineer, 2022Benadict Rakesh +3 more
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Solvent Extraction of Metals From a Brazilian Nickel Lateritic Liquor With D2EHPA and Cyanex 272
Brazilian Journal of Chemical Engineering, 2023Marcelo Borges Mansur +2 more
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