gold extraction ionic liquids

Efficient removal of gold complexes from water by

Liquidliquid extraction of anionic gold complexes with hydrophobic ionic liquids was also carried out. Gold was successfully extracted from water whatever the pH and the ionic liquid used. Distribution coefficients ranged from 3 215; 10 2 to 3 215; 10 4.

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Continuous Extraction of Gold(III) Using Pyridine Ionic

Hydrophilic hexadecylpyridinium chloride ionic liquid constructed water in oil microemulsion was applied for the continuous extraction of gold(III) in a microreactor system. The anion exchange extraction mechanism was proven by spectroscopic techniques.

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Gold Recovery from HCl Solutions using Cyphos IL101 (a

Aug 06, 20080183;32;Tetraalkyl phosphonium chloride (Cyphos IL101), an ionic liquid (IL), was tested for gold recovery from HCl solutions first in liquid/liquid extraction systems (using toluene and hexane as solvent) and in a second step, after being immobilized in a biopolymer composite matrix. SEMEDAX analysis was used for the characterization of the resins.

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Efficient extraction of gold from water by liquidliquid

Extraction of tetrachloroaurate or tetrabromoaurate anions has been carried out using several ionic liquids bearing trialkyl (2 ethoxy 2 oxoethyl)ammonium (alkyl group = C 2 H 5 [EtGBOEt + ], n C 3 H 7 [PrGBOEt +] or n C 4 H 9 [BuGBOEt + ]) cations and halide (Cl or Br ), bis (trifluoromethanesulfonyl)imide (Tf 2 N )

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Solvent Extraction of Gold using Ionic Liquid Based Process

Ionic liquids (ILs) are the potential alternative for gold extraction because they possess several desirable properties, such as a the ability to expanse temperature process up to 300176;C, good solvent properties for a wide range of metal ions, high selectivity, low vapor pressures, stability up to 200176;C, easy

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Extraction of Gold(III) from Hydrochloric Acid into

The extraction of gold(III) from 0.10 mol dm 3 hydrochloric acid into various aprotic ionic liquids (ILs) was investigated at 25 176;C. Abstract The extraction of gold(III) from 0.10 mol dm 3 hydrochloric acid into various aprotic ionic liquids (ILs) was investigated at 25 176;C.

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(PDF) Solvent Extraction of Gold using Ionic Liquid Based

Ionic liquids (ILs) with protonated cations were investigated as extraction solvents for gold(III) (5 215; 10 7 to 6 215; 10 4 mol dm 3) in hydrochloric acid (0.1 to 4 mol dm 3) at 25176;C.

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The recovery and selective extraction of gold and platinum

Although less efficient for gold extraction, the nearly same trend is observed for Pt (II) and Pt(IV) extraction except for Tf 2 N ionic liquids that do not extract Pt(II) and Pt(IV). Consequently, these ionic liquids may be used efficiently to carry out separation between Au

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Efficient extraction of gold(I) from alkaline aurocyanide

Influence of the ionic liquids in aqueous biphasic system on the extraction of gold(I) In order to explore the effect of IL in ABSs on gold(I) extraction, the experiments were conducted by varying the concentration of the imidazolium based ILs ([C n mim]Br, n = 4, 6, and 8) from 10 to 19 wt%.

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