Over the last decade, AMD waters have gained more attention as a potential source of metals due to the emerging need to recover or recycle metals from secondary resources. Metals recovery supports sustainability and the development of a circular economy with benefits for resource conservation and the environment. In this study, five extractants (Acorga M5640, …
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If the concentration of LIX 54 remains in the range of 0.015–0.10 kmol m −3, the extraction process will be then controlled by chemical reaction and diffusion in the aqueous boundary layer. An integrated extraction-stripping process using two hollow fibre contactors allowed the attaining of raffinates with marginal concentration of copper.
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A number of extractants which extract copper from ammoniacal solution were studied, including hydroxyoximes (LIX-84) and beta-diketons (LIX-54) [24], [25], [26].LIX-54 has the virtue of higher saturation capacity of copper and lower ammonia extraction during the extraction in ammoniacal solution [27].The advantages of hydroxyoximes are high efficiency …
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Co pper extraction from e-waste using the organic extractants Lix 84-IC and . ... de cobre utilizando-se extração com os solventes orgânicos Lix 984N e Lix 54, respectivamente.
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Commercial extractants LIX 54-100, LIX 84 I and TOA were used to recover zinc(II) from ammonia solutions. The effect of extractant and ammonia concentration, contact time and reextraction were ...
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The best degree of lithium extraction was obtained with [LIX 54] to [TRPO] ratio of 1:1. At equilibrium pH of 11.5, [LIX 54]:[TRPO] ratio of 5:5, the synergistic extraction coefficient of the synergistic system reaches 4147, which is much higher than the coefficient under other equilibrium pH value. It can be seen that for the LIX 54/TRPO ...
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Nickel extraction from ammoniacal media, containing initially 0.5 g/l of nickel, by LIX 54 in an aliphatic diluent, Iberfluid, has been studied as a function of aqueous pH, equilibration time, temperature, counter anion (sulphate) and extractant concentration. The stripping of nickel from loaded organic phases using H 2 SO 4 has also been studied as a function of acid …
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The use of LIX 54 to separate copper from ammoniacal etch solutions is described by patent applications (2–4) and an information paper of Henkel KGaA. The extraction of …
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The extraction of copper from acidic medium using Liquid Emulsion Membrane LEM as contactors was studied. diketone LIX 54 as an extractant, sesqueoleate which is nonionic surfactant with HLB value ...
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LIX ® Reagents. BASF's copper extraction reagents are based on oxime chemical structures. These reagents give up a proton (hydrogen cation) and exchange it for the Cu +2 ion. The structure of the resultant complex, called a chelate, is very specific to copper at a pH <2.5 and will reject every other metal except from a small amount of iron.
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A method capable of selectively extracting and concentrating lithium from diluted alkaline aqueous media is proposed using a polymer inclusion membrane composed of cellulose triacetate (CTA) and the carriers LIX-54-100 and Cyanex 923 without the addition of plasticizer.Transport conditions were optimized using the modified simplex algorithm.
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Extraction of copper from ammoniacal solutions with LIX 84 and LIX 54 used alone and their mixture was studied, and a chemical model was proposed and verified. The …
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LIX 54 was designed for the extraction of copper from ammoniacal leach liquors. Its ease of stripping, low ammonia loading, fast kinetics, good phase separation, high copper …
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The extraction of copper by LIX 54 can be described by the following equation: The thermodynamic equilibrium constant was evaluated in terms of the aqueous phase and was found to be 10 (2.89±0.03) M 2 at 298 K. The nonideality of the aqueous phase was taken into account by applying the Pitzer model and the extended Debye‐Hückel equation ...
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There have been data on LIX 984N-C [9], LIX 54 [10], LIX 84 [11] for copper extraction by LEMs. In this sudy extractant LIX 664N has been selected based on the excellent extractive property of LIX ...
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Extraction of copper using LIX 984N. Effect of equilibrium pH. Experiments were carried out at room temperature to study the effect of equilibrium pH on the extraction of 0.1M Cu(II) using 15% (v/v) LIX® 984N in kerosene. The results are presented in Figure 2 as percentage of copper extraction versus equilibrium pH. As expected, the percentage ...
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As an example, Alguacil and Alonso [8] studied the extraction of copper from an ammoniacal/ammonium sulphate medium using the β-diketone LIX 54 as extractant. They …
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[5] conducted extraction of copper(II) from ammoniacal solutions by among others a LIX 54-100. Also other metals, for example nickel, can be separated from ammoniacal media by means of LIX 54 [6]. Authors proved that nickel extraction is very sensitive to equilibrium pH and the extraction decreases beyond pH 9.0.
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ABSTRACT Commercial extractant LIX 54-100 was analysed and its components were separated by GC and identified with MS. It contains some amounts of hydrocarbons, including C11-C14 alkanes as a solvent, six isomeric 1-phenyldecane-l,3-diones with different alkyl group structures, heptadecane-8,10-dione, l,3-diphenyl-propane-l,3-dione and an unknown …
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The extraction of Cu(II) by LIX 54-100 (ß-diketone) in Iberfluid (kerosene type diluent) from ammoniacal/ammonium sulphate solutions has been investigated. The analysis of metal distribution data ...
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The percentage copper extraction at different equilibrium pH values as shown in Fig. 1 indicated an increase in percentage extraction from 5.46 to 50.08 for LIX 84-I and from 24 to 60.2 for LIX 622N. The percentage co-extraction of nickel, cobalt and zinc was from 0.06 to 0.38, 0.38 to 1.54 and 0.77 to 1.54 with LIX 84-I and from 0.06 to 0.32 ...
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Commercial extractants LIX 54-100, LIX 84 I and TOA were used to recover zinc(II) from ammonia solutions. The effect of extractant and ammonia concentration, contact time and reextraction were ...
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TBP becomes almost quantitative at pH ~ 4.2, while extraction by 5% LIX-54 in benzene passes through a maximum at pH 5.3 (Ema x = 30%). The pHo. s value for extraction by the mixture is 3.0. Extraction of the metal at pH 4.2 increases with in- creasing proportions of LIX-54 in benzene, the maximum extraction being 68% at ...
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Keywords UX 54, solvent extraction, J3-diketones, tautomerism Some commercial reagents of the,B-diketone type have been proposed for the large-scale extraction of ... LIX 54 was kindly supplied by Henkel Co. (Lot. no. 90051). For thin layer chromatography, Merck silica gel GF-254 plates (0.2 mm thick) were used. The
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Extraction of copper from bacterial leach liquor of a low grade chalcopyrite test heap using LIX 984N-C (PDF) Copper Extraction from Chalcopyrite using LIX 984N-C Academia.edu no longer supports Internet Explorer.
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The copper extraction with 10 % v/v LIX 984N as a function of pH was studied in pH range -0.08 to 2.5. Fig. 2 describes that copper extraction starts at -0.08 pH and quantitative extraction takes place ... pper-0.08 0.45 1.02 1.54 2.5 Equilibrium pH 0.01643 M Copper and 4 M Chloride concentration 0.008309 M Copper and 0.008 M chloride ...
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A novel synergistic solvent extraction (SSX) system consisting of LIX 54 and Cyanex 923 in ShellSol D70 to recover lithium and separate it from sodium in chloride solutions has been developed. With the SSX system, over 97% of lithium was extracted at pH 11 from a synthetic solution with almost no extraction of sodium in a single contact, resulting in a separation factor …
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LIX 54: A beta-diketone based reagent, used for the selective extraction of copper from ammoniacal leach solutions, which strips with very low concentrations of residual sulfuric acid and operates at a high net copper transfer. It may be possible to strip copper from this reagent using concentrated ammonia solutions.
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Copper Extraction Using LIX 84 as a Mobile Carrier in the Emulsion Liquid Membrane Process. November 2023; ... LIX 54 (0.06M) Toluene . Span 83 (8%) H 2 SO 4 (0.1M) E = 85% .
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