Table 1 shows the studies on gold recovery from thiocyanate PLS using ion exchange (IX) resins. Kholomogorov et al. (2002) investigated gold recovery from thiocyanate PLS (0.4 M KSCN and 0.015 M ferric as sulfate, pH = 2–5) using three different organic ion exchangers, AV-17-10P (strong basic), AP-100 (medium basic) and ANKF-5 …
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What are the physical properties of IX resins? The geometric shape, size, and structure of IX resins can vary from one type to the next. Most IX exchange systems employ a resin bed consisting of tiny, porous microbeads, though some systems, such as those used for electrodialysis, use a sheet-like mesh resin.
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The Langmuir equilibrium constants (b) of the raw biomass and PEIB were 0.024 and 0.012 L mg −1, respectively, indicating an affinity between gold(I) and the biosorbent. The ion exchange resin achieved the highest gold(I) loading of 427.771 mg g −1. Download : Download full-size image; Fig. 2.
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Allows for highly selective recovery of target metals; ... Recover PGM's lost to tailings; GOLD: Treatment of shaft water ; Uranium recovery from water and tailings; ... Ion exchange resins consist of polymer beads that are chemically engineered to suit specific ion exchange reactions. These are moved in the opposite direction to the water ...
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Europe PMC is an archive of life sciences journal literature. Europe PMC Sequential recovery of gold and copper from bioleached wastewater using ion exchange resins.
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This paper will specifically investigate the recovery of gold using ion-exchange resins in a thiosulfate-thiourea lixiviant solution. A range of resins of different functionalities: Purolite ...
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Per- and polyfluoroalkyl substances (PFASs) are synthetic compounds, which have been widely produced, used, and recently identified as extremely toxic chemicals, and are responsible for serious environmental and human health risks. In this study, the removal efficiency of MIEX® GOLD resin was tested against six PFAS …
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This study investigates innovative methods for gold (Au) recovery from municipal wastewater treatment plant residues, focusing on the use of synthetic ion exchange …
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Ion exchange resins, that are semi-selective for gold, have been extensively used for gold recovery from cyanide leach processes in the former USSR. Despite forward looking …
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List of ion exchange resin companies, ... ion exchange resin Companies in Europe In Europe Serving Europe Near Europe. Premium. ... environmental analysis. Our first analyzer, the Tekran 2537, was introduced in 1993 and is now widely accepted as the gold standard for automated ambient ... Tekran - Model 1308 - Recirculating Water …
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The principal technological scheme of desorption of gold and accompanying metal-impurities from the AM-2B resin phase used for the sorption processing of gold-bearing ores is considered.
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[17, 33, 34]. The ion exchange resin can be used to recover gold from its pregnant solutions through the reversible ion exchange reactions between the counter ions in the resins and gold complex in the solutions. Depending on the gold pregnant solution, gold exists predominantly in two different oxidation states (anion forms)
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The ion exchange resins studied to recover gold from thiosulfate leach solution mainly involve weak-base anion resins and strong-base anion resins. The loading capacities of weak-base resins are usually less …
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The technique of ion-exchange resin adsorption is suitable for the gold recovery from thiosulfate leach solution because the resin can be employed in the form of resin-in-leach/pulp and be eluted and regenerated …
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The company Jacobi Group offers a full range of carbon products to serve the gold recovery industry. These include granular activated carbon grades, and higher capacity granular activated carbon (Group, 2017). 5.2. Ion-exchange resins (IX) The application of ion-exchange resins is an alternative to separate gold ions.
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DOI: 10.1016/j.rcradv.2023.200182 Corpus ID: 262205568; Gold recovery from synthetic mine tailings leachate using chelating ion exchange resins with thiosulfate-thiourea lixiviant
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The Global Ion Exchange Resin Market is expected to grow 4.2% by 2025. Europe accounts for a significant portion of the Global Ion Exchange Resin market, with many big companies based and …
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and recover gold from such diluted media requires the use of ion exchange resins. Ion exchange polymers have reliably established applica-tions [16,17] including the separation of noble metals [18 ...
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DOI: 10.1016/j.hydromet.2023.106055 Corpus ID: 257566437; Selective gold recovery from pregnant thiocyanate leach solution using ion exchange resins @article{Azizitorghabeh2023SelectiveGR, title={Selective gold recovery from pregnant thiocyanate leach solution using ion exchange resins}, author={Atefeh Azizitorghabeh …
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Recently, Choi et al. (2020) studied the sequential selective recovery of Au and Cu from a bio-leached cyanide solution containing 366 mg/L Cu and 23 mg/L Au by two ion exchangers i.e., Amberjet™ 4200 (anion exchange resin) and Amberlite IRC-86 (cation exchange resin) at different pH values. Based on their studies, over 98% Au was …
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This paper describes work aimed at evaluating the effectiveness of commercially available anion exchange resins for the recovery of gold from thiosulfate leach liquors and pulps. Increasing environmental and occupational safety concerns about the use of cyanide in gold processing has increased interest in more acceptable alternative
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The extraction of gold from chloride solutions by ion exchange is examined. It is shown that at initial gold concentrations between 1-5 ppm, 20 g/l Cl-and pH 5, the kinetics of loading on weak base resins are slightly slower than those observed with activated charcoal. Equilibrium loading of auric chloride varies considerably as a function of pH …
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GOLD RECOVERY FROM COPPER-RICH ORES EMPLOYING THE PUROLITE S992 GOLD-SELECTIVE ION EXCHANGE RESIN 1 1GOLD RECOVERY FROM COPPER -RICH ORES EMPLOYING THE PUROLITE S9 92 GOLD-SELECTIVE ION EXCHANGE RESIN J. van Deventer*, M. Kotze**, V Yahorava** * Purolite International, South Africa …
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The current study deals with the selective recovery of gold over copper from synthetic and real thiocyanate PLS using ion exchange resins. Consequently, selective adsorption of Au(I) by ion exchange resins and selective Au(I) elution by proper eluent is proposed to obtain a high-purity Au(I) solution.
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Current research about gold recovery by ion exchange resins from pregnant thiosulfate solutions is in its infancy and a large number of further work is needed to make the recovery technique more efficient, economical and environmentally friendly. In terms of the main problems existing in the resin adsorption technique, the following ...
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Pulp, 10–50% solids Resin-in-pulp (RIP), air-agitated pachuca or mechanically agitated vessel TABLE 1 Applications of Ion Exchange in Hydrometallurgy TABLE 2 Choice of IX Contactor Based on Solids Content of Feed A wide variety of process streams benefit from the application of ion exchange resins, as shown in Table 1.
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The applications of ion exchange (IX) resins in gold metallurgy will be discussed in three main contexts. The first one focuses on the use of the IX resins for the concentration and recovery of gold from leach pulps or solutions. In this case, the resins appear as an alternative to activated carbon, the typical gold adsorbent from dilute
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This paper will specifically investigate the recovery of gold using ion-exchange resins in a thiosulfate-thiourea lixiviant solution. A range of resins of different functionalities: Purolite® A200, Lewatit® MonoPlus TP 214, Dowex™ M-4195, Puromet MTS9140 and Lewatit® VPOC 1026 were assessed for their gold uptake capabilities via ...
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Ion-exchange resin can be used to recover gold from pregnant thiosulfate solutions through the reversible ion-exchange reactions between the counter ions in the resins and gold (Ι) thiosulfate complex in the solutions.
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Learn about the latest advances in gold recovery from leach solutions using cementation, adsorption, ion exchange and solvent extraction. The paper reviews the …
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