Amberlite XAD Resins Impregnated with Ionic Liquids for Au(III) Recovery

Navarro, Ricardo García; Lira, Miguel Angel; Saucedo, I.; Alatorre, Alejandro; Avila, M.J.; Guibal, Eric

doi:10.1002/masy.201600134

Cited by 12 publications

(10 citation statements)

References 39 publications

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“…In order to investigate kinetics of sorption of gold(III), platinum(IV) and palladium(II) ions on Lewatit VP OC 1026-Aliquat 336, the sorption kinetic models: pseudo-first-order (2), pseudo-second-order (3) and diffusion models as well as intra-particle diffusion model ( 4) and Dunwald-Wagner model (5) were used. Linear forms of these models are described by: ln q e À q t ð Þ ¼ lnq e À k 1 � t ðPFOÞ (2) q e = 0.8 mg/g Au(III) [25] XAD-7 impregnated by IL101 C = 0.01 M HCl, Agitation time: 7 days; q e = 87.9 mg/g Au(III) [26] XAD-1180 impregnated by IL101 C = 0.01 M HCl, Agitation time: 7 days; q e = 126 mg/g Au(III) [26] N-(diethylthiophosphoryl)-aza [18]crown-6 immobilized into Amberlite XAD-4 resin C = 0.05 M HCl q e = 42 mg/g Au(III) [27] Amberlite XAD-7 resin with a phenanthroline-derived diamide extractant N,N'diethyl-N,N'-ditolyl-2,9-diamide-1,10-phenanthroline (Et-Tol-DAPhen) C = 3 M HNO 3 q e = 74.6 mg/g Au(III) [28] XAD7HP impregnated by 2-mercaptobenzoxazole (MBO)/XAD7HP C = 0.5 M HNO 3 q e = 98.4 mg/g Pd(II) [29] Chitosan with dibenzo-18-crown-6-ether (Chitosan-DB18 C6) C o = 150 mg/L Pd(II), pH = 2 C o = 175 mg/L Pt(IV), pH = 2 q e = 17.6 mg/g Pd(II) q e = 98.4 mg/g Pt(IV) [30] Amberlite XAD7 functionalized with dibenzo-18-crown ether-6 (XAD7-DB18 C6) pH = 2, T = 298 K q e = 6.5 mg/g Pd(II) [31] Alginate-Cyanex 302 microcapsules 0.5 M HCl, T = 293 K q e = 22.1 mg/g Pd(II) [32] Monomer-impregnated adsorbent (MTCA XAD7) C o = 850 mg/L Pd(II), C = 1 M HCl q e = 7.9 mg/g Pd(II) [33] 2,2'-thiobisethanol dimethacrylate/ ethylene glycol dimethacrylate copolymer C = 4 M HCl q e = 100 mg/g Au(III) [34] Purogold™ A194 resin C = 1 M HNO 3 , T = 294 K q e = 0.76 mmol/ g Pd(II) [35] Lewatit VP OC 1026 impregnated by Aliquat 336 C = 0.1 M HCl, Agitation time: 24 h, T = 293 K, m:V = 0.1 g : 25 cm 3 q e = 94.1 mg/g Au(III) q e = 38.2 mg/g Pd(II) q e = 36.2 mg/g Pt(IV)…”

Section: Kinetic Modelsmentioning

confidence: 99%

Kinetic and Thermodynamic Studies of Precious Metals Sorption on Impregnated Lewatit VP OC 1026 from Chloride Solutions

Zinkowska,

Hubicki,

Wójcik

2024

ChemPhysChem

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Precious metals are used in many branches of industries. Due to their rarity and diminishing natural resources, more and more new methods are being sought to recover them from secondary sources, which can be electronic waste or spent car exhaust converters. This paper presents the research on the recovery of precious metals from chloride solutions using the Aliquat 336‐impregnated Lewatit VPOC 1026 sorbent. The study used a warm impregnation method without toxic solvents, which is beneficial for the environment. The maximal sorption capacities obtained for model solutions in 0.1 M HCl were: 95.6 mg/g for gold, 38.2 mg/g for palladium, and 36.2 mg/g for platinum. There were studied: kinetics and thermodynamics of adsorption, as well as amounts of the adsorbent, effects of phase contact time and HCl concentration on the adsorption of precious metals. Positive values of enthalpy change ΔH° validate that the process is endothermic. The research was also carried out on a real leaching solution obtained by digesting a spent catalytic converter, containing small amounts of platinum group metals. Desorption of precious metal ions was conducted using 1M thiourea in 1M hydrochloric acid. The obtained impregnated sorbent proved to be effective for adsorption of Au(III), Pd(II), Pt(IV) ions.

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Section: Kinetic Modelsmentioning

confidence: 99%

Kinetic and Thermodynamic Studies of Precious Metals Sorption on Impregnated Lewatit VP OC 1026 from Chloride Solutions

Zinkowska,

Hubicki,

Wójcik

2024

ChemPhysChem

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“…Among these, gold is significant due to both its color, and its sales price and profit potential. Thus, the separation and recovery of this precious metal, from any of the above materials, has attracted wide interest, and different separation technologies have been proposed for this task: adsorption [1,2], ion exchange [3], liquid membranes [4,5], and liquid-liquid extraction using ethers [6][7][8], amides [9], amines [10], ionic liquids [11] or phosphonic acid derivatives [12].…”

Section: Introductionmentioning

confidence: 99%

Insight into the Liquid–Liquid Extraction System AuCl4−/HCl/A327H+Cl− Ionic Liquid/Toluene

López

2021

Processes

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The ionic liquid A327H+Cl− is generated by reaction of the tertiary amine A327 (industrial mixture of tri-octyl and tri-decyl amines) and hydrochloric acid solutions. In this study, the extraction of Au(III) by A327H+Cl− ionic liquid under various variables, including metal and ionic liquid concentrations, was investigated. Results indicate that A327H+AuCl4− is formed by an exothermic (ΔH° = −3 kJ/mol) reaction in the organic solution. Aqueous ionic strength influences the formation constant values, and the specific interaction theory (SIT) was used to estimate the interaction coefficient between AuCl4− and H+. Gold (III) was stripped using thiocyanate media, and from the strip solutions, gold was precipitated as gold nanoparticles.

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“…The immobilization on polymer supports was performed both in the case of commercial ILs as well as newly designed compounds, although in the first group, mainly impregnation was used. An example is the immobilization of Cyphos IL-101 (tetradecyl(trihexyl)phosphonium chloride) onto Amberlite XAD series sorbents and Pd(II), Fe(III), Hg(II), Au(III), and Pt(IV) sorption from HCl [ 22 , 23 , 24 , 25 ]. Our previous studies also confirmed that the functionalization of PS-DVB by the incorporation and encapsulation of ionic liquid extractant [ 26 , 27 ] or by quaternization with IL-precursors to obtain the IL-functionalized polymers enabled us to obtain efficient sorbents [ 13 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Novel Polymer Sorbents with Imprinted Task-Specific Ionic Liquids for Metal Removal

et al. 2021

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In this paper, the potential of novel polymer sorbents with the imprinted IL-functional group for the removal of Cu(II), Cd(II), and Zn(II) from aqueous solutions was investigated by batch mode. The sorbents were fabricated by direct reaction of the prepared polymer matrix (poly(vinylbenzyl chloride-divinylbenzene), VBC, and poly(vinylbenzyl bromide-divinylbenzene), VBBr) with 1-(3- or 4-pyridyl)undecan-1-one and oxime of 1-(3- or 4-pyridyl)undecan-1-one. The Fourier Transform Infrared Spectroscopy (FT-IR), Raman Spectroscopy (Raman), Thermogravimetric Analysis (TG), Differential Scanning Calorimetry (DSC), and Scanning Electron Microscopy (SEM) techniques were used to show functionality and stability of the sorbents. The materials were also characterized by contact-angle goniometry, X-rayphotoelectron spectroscopy (XPS), and Zeta potential analysis. The removal of Cd(II), Cu(II), and Zn(II) was monitored and optimized under the influence of several operational controlling conditions and factors such as pH, shaking time, temperature, initial metal ions concentration, and counter-ions at the functional group. The results obtained confirmed the very high potential of the sorbents; however, the properties depend on the structure of the functional group. The tested sorbents showed fast kinetics, significant capacity at 25 °C (84 mg/g for the Zn(II) sorption with VBC-Ox4.10, 63 mg/g for the Cd(II) sorption with VBBr-Ox3.10, and 69 mg/g for the Cu(II) sorption with VBC-K3.10), and temperature dependence (even 100% increase in capacity values at 45 °C). The selected sorbent can be regenerated without a significant decrease in the metal removal efficiency.

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Amberlite XAD Resins Impregnated with Ionic Liquids for Au(III) Recovery

Cited by 12 publications

References 39 publications

Kinetic and Thermodynamic Studies of Precious Metals Sorption on Impregnated Lewatit VP OC 1026 from Chloride Solutions

Kinetic and Thermodynamic Studies of Precious Metals Sorption on Impregnated Lewatit VP OC 1026 from Chloride Solutions

Insight into the Liquid–Liquid Extraction System AuCl4−/HCl/A327H+Cl− Ionic Liquid/Toluene

Novel Polymer Sorbents with Imprinted Task-Specific Ionic Liquids for Metal Removal

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