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Solvent Extraction Leachates

CA2391394A1 - Solvent extraction process for the recovery ...

Solvent extraction process for the recovery of valuable metals from acidic leachates Download PDF Info Publication number CA2391394A1. ... 238000000638 solvent extraction Methods 0.000 title description 5; 239000007788 liquids Substances 0.000 claims abstract description 37; 238000000605 extraction Methods 0.000 claims abstract description 34; 150000002500 ions Chemical class 0.000

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Solvent extraction fractionation of Li-ion battery ...

31/05/2017  A solvent extraction process for the fractionation of Co, Ni, and Li from the sulfuric acid leachate of Li-ion battery waste was designed. The most suitable reagent, operating pH, phase ratio, and number of equilibrium stages were determined based on batch equilibrium experiments. The loading, scrubbing, and stripping steps of the process were verified by bench-scale continuous counter-current ...

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Recovery of scandium from sulfation-roasted leachates of ...

04/04/2017  Solvent extraction of scandium from acidic solutions is most commonly performed with traditional acidic or neutral ... towards the most important elements present in bauxite residue leachates was investigated by extraction studies on synthetic solutions. Most of the major elements, including Al, Na, Ca and Ti, together with the lanthanides and Y, were almost not extracted at low pH values ...

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(PDF) Solvent extraction fractionation of Li-ion battery ...

A solvent extraction process for t he fractionation of Co, Ni, and Li from the sulfur ic acid leachate of Li-ion battery waste was designed. The most suitable reagent, operating pH,

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Recovery of gold ions from discarded mobile phone

01/05/2019  Solvent extraction. The solvent extraction system consisted of D2EHAG in n-dodecane as the extracting organic solution and a synthetic or actual leachate of the discarded mobile phones as the feed aqueous solution. A synthetic feed solution was prepared by dissolving metal salts in an HCl solution in concentrations similar to those in the ...

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Solvent extraction separation of copper and zinc from

01/10/2015  Solvent extraction is a purification method that utilizes the immiscibility of liquids to separate different species between two liquid phases, usually an aqueous phase and an organic solvent phase. The transfer of species, for example metal ions, from the aqueous phase to the organic phase is aided by extractants forming lipophilic complexes with the target metals. The metal-extractant ...

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Solvent extraction separation of copper and zinc from

Request PDF Solvent extraction separation of copper and zinc from MSWI fly ash leachates Fly ash from combustion of municipal solid waste (MSW) contains significant amounts of metals, some of ...

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Methods for the Determination of Red List Substances in ...

identified a modification to the solvent extraction step of this method which overcame this problem; methods for most organophosphoms compounds worked well for the water matrix, but not for any of the leachates at the levels tested; more internal standards (I’C labelled or analogues) are required to allow for the wide range of chemical properties experienced with some classes of compounds ...

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New PhD on cobalt rare-earth solvent extraction –

Selective recovery of scandium(III) from bauxite residue leachates by solvent extraction with a carboxyl-functionalised ionic liquid. Proceedings of the Bauxite Residue Valorisation and Best Practices Conference 2015. Bauxite Residue Valorisation and Best Practices Conference 2015. Leuven (Belgium), 5-7 October 2015 (pp. 331-337). Onghena B., Opsomer T., Binnemans K. (2015). Separation of ...

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Chromatographic separation of rare earths from aqueous and ...

improve the selectivity of processes.23 In non-aqueous solvent extraction processes for the separation of REEs, the mutual solubility and the poor phase disengagement of the less polar organic phase comprising the extractant and the more polar organic phase comprising the components that need to be separated can be issues. For instance, the applicability of ethanol in non-aqueous solvent ...

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CA2391394A1 - Solvent extraction process for the

Solvent extraction process for the recovery of valuable metals from acidic leachates Download PDF Info Publication number CA2391394A1. ... 238000000638 solvent extraction Methods 0.000 title description 5; 239000007788 liquids Substances 0.000 claims abstract description 37; 238000000605 extraction Methods 0.000 claims abstract description 34; 150000002500 ions Chemical class 0.000

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Solvent extraction separation of copper and zinc from

This paper describes the development and evaluation of a process for recovery of Cu and Zn from MSW combustion fly ash based on hydrochloric acid leaching followed by two solvent extraction processes, one for each metal. 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 ...

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(PDF) Solvent extraction fractionation of Li-ion battery ...

Co nclus ions. A solvent extraction process for t he fractionation of Co, Ni, and Li from the sulfur ic acid. leachate of Li-ion battery waste was designed. The most suitable reagent, operating pH ...

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Table I from Solvent extraction fractionation of Li-ion ...

Table I. Previous research on the solvent extraction fractionation of Co, Ni, and Li from battery waste leachates. The diluent of the organic phase in all studies has been some conventional commercial kerosene, except for those where sulfonated kerosene is mentioned. - "Solvent extraction fractionation of Li-ion battery leachate containing Li, Ni, and Co"

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Solvent extraction separation of copper and zinc from

Request PDF Solvent extraction separation of copper and zinc from MSWI fly ash leachates Fly ash from combustion of municipal solid waste (MSW) contains significant amounts of metals, some of ...

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Determination of 99 Tc in fuel leachates using extraction ...

Determination of 99 Tc in fuel leachates using extraction chromatography ... solvent extraction and ion-exchange. A simple, quick and efficient method is described for measuring 99Tc in nuclear fuel leachate solutions of varying composition and levels of radioactivity, using cation exchange resin and a solid phase extraction chromatographic resin (TEVA Spec Industries, Inc., Darien, Illinois ...

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Chromatographic separation of rare earths from aqueous and ...

improve the selectivity of processes.23 In non-aqueous solvent extraction processes for the separation of REEs, the mutual solubility and the poor phase disengagement of the less polar organic phase comprising the extractant and the more polar organic phase comprising the components that need to be separated can be issues. For instance, the applicability of ethanol in non-aqueous solvent ...

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Uranium processing - Leaching Britannica

As a general rule, solvent extraction is preferred over ion-exchange methods for acidic leachates containing more than one gram of uranium per litre. Solvent extraction is not useful for recovery of uranium from carbonate leach liquors, however. Precipitation of yellow cake. Prior to final purification, uranium present in acidic solutions produced by the ion-exchange or solvent-extraction ...

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New PhD on cobalt rare-earth solvent extraction –

Selective recovery of scandium(III) from bauxite residue leachates by solvent extraction with a carboxyl-functionalised ionic liquid. Proceedings of the Bauxite Residue Valorisation and Best Practices Conference 2015. Bauxite Residue Valorisation and Best Practices Conference 2015. Leuven (Belgium), 5-7 October 2015 (pp. 331-337). Onghena B., Opsomer T., Binnemans K. (2015). Separation of ...

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Recovery of scandium from sulfation-roasted leachates of ...

To improve the separation between scandium and iron, Fe(III) was reduced to Fe(II) by addition of ascorbic acid to the sulfate leachate prior to extraction. The phase ratio and pH of the extraction were optimized to achieve high extraction and concentration of scandium in the ionic liquid phase. Co-extracted metal ions were scrubbed from the loaded ionic liquid phase by HCl and the purified ...

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WO2001038590A3 - Solvent extraction process for the ...

Multistage process for the recovery of valuable metals from an acidic, aqueous leachate solution in which valuable metal ions are present in concentrations of from 10 to 40 g/l, which comprises (I) liquid/liquid extraction of the leachate solution, where the leachate solution is brought into contact at least once with an organic, water-insoluble extractant, (II) and subsequently bringing the ...

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CA2391394A1 - Solvent extraction process for the

Solvent extraction process for the recovery of valuable metals from acidic leachates Download PDF Info Publication number CA2391394A1. ... 238000000638 solvent extraction Methods 0.000 title description 5; 239000007788 liquids Substances 0.000 claims abstract description 37; 238000000605 extraction Methods 0.000 claims abstract description 34; 150000002500 ions Chemical class 0.000

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Solvent extraction separation of copper and zinc from

Solvent extraction separation of copper and zinc from MSWI fly ash leachates Journal article, 2015 ... of a process for recovery of Cu and Zn from MSW combustion fly ash based on hydrochloric acid leaching followed by two solvent extraction processes, one for each metal. The separation of Cu from the acid leachate was done using an aldoxime extractant, LIX860N-I, in kerosene and a mixture of ...

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Determination of 99 Tc in fuel leachates using extraction ...

Determination of 99 Tc in fuel leachates using extraction chromatography ... solvent extraction and ion-exchange. A simple, quick and efficient method is described for measuring 99Tc in nuclear fuel leachate solutions of varying composition and levels of radioactivity, using cation exchange resin and a solid phase extraction chromatographic resin (TEVA Spec Industries, Inc., Darien, Illinois ...

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Uranium processing - Leaching Britannica

As a general rule, solvent extraction is preferred over ion-exchange methods for acidic leachates containing more than one gram of uranium per litre. Solvent extraction is not useful for recovery of uranium from carbonate leach liquors, however. Precipitation of yellow cake. Prior to final purification, uranium present in acidic solutions produced by the ion-exchange or solvent-extraction ...

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Chromatographic separation of rare earths from aqueous and ...

improve the selectivity of processes.23 In non-aqueous solvent extraction processes for the separation of REEs, the mutual solubility and the poor phase disengagement of the less polar organic phase comprising the extractant and the more polar organic phase comprising the components that need to be separated can be issues. For instance, the applicability of ethanol in non-aqueous solvent ...

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Polybrominated diphenyl ethers (PBDEs) in leachates from ...

153, -154, and -183) in landfill leachates using different solvent systems, hexane, dichloromethane (DCM), petroleum ether (PE), acetone and mixtures of some of these solvents. The solvents listed above have widely been used in liquid–liquid extraction of PBDEs in river and seawater samples (Powell, 1995; Ikomomou et al., 2002). However, they have not been investigated comparatively as ...

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New PhD on cobalt rare-earth solvent extraction –

Selective recovery of scandium(III) from bauxite residue leachates by solvent extraction with a carboxyl-functionalised ionic liquid. Proceedings of the Bauxite Residue Valorisation and Best Practices Conference 2015. Bauxite Residue Valorisation and Best Practices Conference 2015. Leuven (Belgium), 5-7 October 2015 (pp. 331-337). Onghena B., Opsomer T., Binnemans K. (2015). Separation of ...

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Recovery of gold ions from discarded mobile phone

This paper reports on the selective separation and recovery of gold ions from leachates of discarded mobile phones using liquid-liquid extraction and a polymer inclusion membrane (PIM) transport system. The collected mobile phones were crushed by a mill and the obtained powder was calcinated. After leaching with aqua regia, the metal composition of the leachate was analyzed by inductively ...

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Recovery of Rare-Earth Elements from Neodymium Magnet ...

12/12/2018  After the preliminary tests using liquid–liquid extraction (Fig. 6), it was concluded that D2EHPA was the best extractant for selective extraction of the REEs from glycolic and maleic acid leachates, while keeping other metals mostly in the aqueous phase. TODGA showed promising results in the maleic acid leachate. Other extractants tested all showed lower D values for REEs, so that the ...

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