Zn recovery attempts from a copper-free extreme Acid Mine Drainage with ~ 53 g/L Fe and ~ 2 g/L Zn revealed Fe co-extraction in solvent extraction with 0.9 M D2EHPA or a mixture of 0.72 M D2EHPA ...
A blend of brass ashes containing 48.0% of zinc and 16.6% of copper was processed through selective leaching with dilute H2SO4 and solvent extraction, using D2EHPA as the extracting agent in order ...
of copper, nickel and zinc from synthetic solution using LIX 984 N as the extractant dissolved in kerosene, with an aim to separate these metals efficiently by single stage extraction.
The present study aims to investigate the effect of copper ion concentration in the solution, extractant concentration in the solvent, solution pH and temperature on the extraction percentages of ...
A hydrometallurgical treatment involving solvent extraction of zinc using di-2-ethylhexyl phosphoric acid (D2EHPA) has been investigated to recover zinc from an industrial leach residue. The residue was leached with sulfuric acid producing leach liquor which was subjected to solvent extraction for enrichment of zinc and removal of impurities.
Download scientific diagram | McCabe Thiele plot for copper extraction (Aqueous : Cu =0.920 g/L in sulfate solution, pH = 4.70, Organic : 5% LIX84 in kerosene ) from publication: Extraction of ...
DOI: 10.1016/J.SEPPUR.2013.10.045 Corpus ID: 94485206; Solvent extraction of copper, zinc, cadmium and nickel from sulfate solution in mixer settler unit (MSU) @article{Jha2014SolventEO, title={Solvent extraction of copper, zinc, cadmium and nickel from sulfate solution in mixer settler unit (MSU)}, author={Manish Kumar Jha and Divika …
The extraction isotherms of copper, nickel and zinc were obtained by contacting the respective metal solutions and 0.05 M LIX 984N at different A:O phase ratio at their respective equilibrium pH ...
This paper describes a study of the separation of zinc and copper from the leach liquor generated in the treatment of the zinc residue (29.6 g/L Zn and 37.4 g/L Cu) by liquid–liquid extraction. In it, the influence of the extractant type and concentration, aqueous phase acidity, contact time and stripping agent concentration were investigated. . …
The solvent extraction of copper and zinc from the bioleaching solutions of low-grade sulfide ores with LIX984 and D2EHPA was investigated. The influences of extractant content, aqueous pH value, phase ratio and equilibration time on metals extraction were studied. The results show that LIX984 has a higher selectivity for …
Separation of iron(III), copper(II) and zinc(II) from a mixed sulphate/chloride leach liquor bearing 11.8 kg/m3 iron, 24.8 kg/m3 copper, 0.23 kg/m3 zinc, 3.8 kg/m3 cobalt, 35.2 kg/m3 nickel, 176.3 ...
Solvent extraction studies of copper and zinc have been carried out using Versatic 10 acid and Cyanex 272 separately from a model brass pickle liquor. Various parameters for the extraction and separation of copper and zinc such as effect of pH, extractant concentration, phase ratio etc. have been optimized. It was observed that …
Solvent extraction separation of copper and zinc from MSWI fly ash leachates ... The separation of Cu from the acid leachate was done using an aldoxime extractant, LIX860N-I, in kerosene and a mixture of phosphine oxides, Cyanex 923, also in kerosene, was used for extraction of Zn from the Cu-depleted aqueous phase. ... It was shown that it is ...
sulfuric acid. The zinc stripping rate is above 99~ with 100 g/I. sulfuric acid, while that of iron is 0.16°//00. Hence, the separation of zinc from iron can be achieved by the selective stripping. Key words: solvent extraction; bioleaehing; copper; zinc; L]X984; D2EHPA CLC number: TF18 Document code: A
The solvent extraction of copper and zinc from the bioleaching solutions of low-grade sulfide ores with LIX984 and D2EHPA was investigated. The influences of extractant content, aqueous pH value,…
Results from the solvent extraction of copper and zinc from pregnant solutions after bioleaching of re-floated tailings from the Kipushi concentrator in DR of …
Extraction studies were carried out with individual metal solutions containing 0.0025 M copper, nickel and zinc sulfate solutions. The extraction of these metals with 0.005 M …
Aqueous solution containing zinc, iron, and manganese for the solvent extraction process was obtained from leaching experiments. The organic phase was …
An acidic solution of copper (II) sulphate containing some contaminations of zinc and iron (II) ions was electrolysed till all the copper is deposited. If electrolysis is further continued for sometime, the product liberated at cathode would be: (Given : E o F e 2 + / F e = − 0.44 V and E o Z n 2 + / Z n = − 0.76 V)
to separate and recover copper and zinc. Solvent extraction of copper and zinc using Versatic 10 acid Effect of pH During extraction of metals using acidic extractants, H+ ions are released causing the decrease in pH which subsequently lowers extraction of metals in several instances. So the extraction process is greatly affected by pH.
A study has been carried out on the use of solvent extraction to remove copper from concentrated zinc sulfate leach solution. In a series of experiments using a plant leach solution containing 2 g/l Cu, 2 g/l Fe, 173 g/l Zn, 7.9 g/l H 2 SO 4, 250 mg/l Cd, 15 mg/l Co and LIX 622 in SX-1, up to 97–98% of the copper present in the zinc sulfate …
If you put pure zinc metal into a solution of copper (II) sulfate, the zinc will slowly dissolve to produce a zinc sulfate solution, and the copper (II) ion of the copper (II) sulfate will be converte; Define the following terms. 1. solution 2. solute 3. solvent 4. heterogeneous 5. homogeneous 6. alloy
A process for separating zinc and copper values from an aqueous solution of copper and zinc salts having a pH of between about 0.5 and 6 is provided comprising: A. contacting said aqueous solution with the copper salt of di-(2-ethylhexyl) phosphoric acid to form a zinc-containing organic phase and a copper-containing aqueous phase; B. separating …
Many researchers have studied the use of D2EHPA for extraction of zinc from various aqueous solutions such as the ammonium oxalate, oxalic acid [28], sulfate [25,27, 29], and phosphoric acid ...
Sodium hydrosulfide (NaHS) is used to selectively precipitate copper, arsenic, and zinc from a solvent-extraction raffinate stream. The resulting sulfide precipitate is bagged and ... The examination of copper sulfide precipitation in an acidic sulfate solution (Hong, 2020) noted temperature and pressure as key combined control fa ctors for ...
The extraction of copper from acidic leach solution with the aldoxime Acorga M5640 using a pulsed sieve plate column has been investigated. The pregnant leach solution was produced through pressure leaching of an industrial sphalerite concentrate that contained zinc, iron, copper, indium and other minor elements. Bench …
In case of the ammonium chloride solutions the extractant of 1-(3-pyridyl)nonan-1-one was used for extraction of copper(II) at pH below 6 whereas in case of acidic chloride solution the 1-(2 ...
After leaching of the waste printed circuit boards with HNO 3, the leach liquor bearing 5.13 kg/m 3 Cu, 0.63 kg/m 3 Fe (III), 0.36 kg/m 3 Zn, 1.31 kg/m 3 Ni and 34.59 kg/m 3 nitrate was obtained. Development of a solvent extraction flow chart for the separation and recovery of Cu, Ni and Fe (III) using LK-C2 as the extractant from nitrate …
Solvent extraction technique with 40 volume percent of bis(2-ethylhexyl)phosphoric acid as an extractant was applied for recovery of zinc from technological solutions.
The studies showed the selective extraction of copper after iron precipitation from the sulfuric acid leach solution of e-wastes containing 0.92 g/L Cu and minor impurities with 2-hydroxy-5-nonylacetophenoneoxime (LIX 84) above pH 2.0 in single stage. Further, extraction of zinc, nickel and cadmium was carried out using Cyanex 302.
