Ion exchange recovery of platinum from chloride solutions

Кононова, О. Н.; Leyman, T.A.; Melnikov, A.M.; Kashirin, D. M.; Tselukovskaya, M.M.

doi:10.1016/j.hydromet.2009.11.011

Cited by 59 publications

(33 citation statements)

References 12 publications

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“…The strongly basic anion exchanger Lewatit M+ MP 600 exhibited a high sorption affinity to Pt, as seen in the sorption recovery of Pt from both process leach solution and synthetic solution. This is consistent with the observations by Kononova et al (2010c) and Mel'nikov et al (2012b) who tested a heterodisperse version of this ion exchanger. On the other hand, the sorption recovery of Rh from both synthetic solution and process leach solution was markedly unfavourable, which was also observed by Kononova et al (2009).…”

Section: Methods Used To Determine Rate Of Desorptionsupporting

confidence: 92%

“…11 should be noted that this is unlikely to be due to the effect of the acidity of the contacting solution (Kononova et al, 2009;2010c;Mel'nikov et al, 2012b) which is explained further in the latter section of this paper.…”

Section: Accepted M Manuscriptmentioning

confidence: 75%

“…This is also implied by the K R values in Table 5. The calculated K value in the Langmuir isotherm in Table 5 for the adsorption of Pt on Lewatit M+ MP 600 was also compared with previously published data (Kononova et al, 2010c). Despite its difference with Lewatit MP 600 WS in terms of bead The most notable result from this quantitative assessment, as was also observed from the qualitative assessment, is the ion exchange affinity of XUS 43600.00 for Pt and Pd.…”

mentioning

confidence: 68%

“…On the other hand, Lewatit M+ MP 600 which is a strong basic exchanger, has no complexation ability since its quaternary ammonia base functional group maintains equal adsorption ability in a broad range of pH values, in contrast to weak and intermediate basic anion exchangers (Kononova et al, 2010c(Kononova et al, , 2011Mel'nikov et al, 2012b). The adsorption ability of this resin for Pt and Pd is therefore not greatly affected by the low pH of the contacting medium, but more likely to be affected by the competing effect of the high chloride concentration in the strong acidic media, as illustrated by the following reaction scheme:…”

Section: Adsorption Selectivitymentioning

confidence: 99%

“…For these reasons, a scheme to recover Rh strongly retained by the resin via fuming, whereby resin is incinerated and Rh is recovered from the resulting ashes remains plausible (Hubicki et al, 2007). Such an approach may be economical and feasible for industrial application as the revenue from the metal recovered usually exceeds the losses due to the cost of the resins replacement even after a single adsorption (Brykina et al, 1995;Kononova et al, 2008;2010c).…”

Section: Bv/hmentioning

confidence: 99%

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Recovery of platinum, palladium and rhodium from acidic chloride leach solution using ion exchange resins

2015

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ÔØ Å ÒÙ× Ö ÔØRecovery of platinum, palladium and rhodium from acidic chloride leach solution using ion exchange resins This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT AbstractThe objective of this study was to investigate the applicability and performance of the selected ion exchangers with different physicochemical characteristics and functional groups to simultaneously recover three different platinum group elements (PGE), platinum(IV), palladium(II) and rhodium(III), present in a chloride solution produced by the leaching of spent automotive catalysts. The tested ion exchangers included a resin with a quaternary ammonium functional group (Lewatit MonoPlus (M+) MP 600), a resin with a polyamine functional group (Purolite S985) and a resin with a thiouronium functional group (XUS 43600.00). The study also focused on the achievable desorption from the loaded resins using different eluent systems. The leach solution was chlorine-saturated and contained 2.35 mol/L hydrochloric acid, platinum and palladium in concentrations of 0.13 mmol/L, and rhodium 0.03 mmol/L. It was found that XUS 43600.00 showed the best adsorption performance for platinum(IV) and palladium(II) chloride complexes among the investigated resins, but weak affinity for rhodium(III) chloride complexes was observed for all three resins. The adsorption kinetics were found to obey the Ho pseudo-second order expression. For Lewatit MonoPlus (M+) MP 600 and Purolite S985 the adsorption was best described by the Freundlich isotherm, while for XUS 43600.00 the Langmuir isotherm was more apt. Desorption of the PGE was examined using four different elution agents: sodium thiocyanate (2 mol/L); hydrochloric acid (2 mol/L); thiourea (1 mol/L) in hydrochloric acid (2 mol/L); and thiourea(1 mol/L) in sodium hydroxide (2 mol/L). The results showed that platinum and palladium can be fully eluted with the acidic thiourea but desorption of rhodium proved difficult with all the eluents.

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Section: Methods Used To Determine Rate Of Desorptionsupporting

confidence: 92%

Section: Accepted M Manuscriptmentioning

confidence: 75%

mentioning

confidence: 68%

Section: Adsorption Selectivitymentioning

confidence: 99%

Section: Bv/hmentioning

confidence: 99%

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Recovery of platinum, palladium and rhodium from acidic chloride leach solution using ion exchange resins

2015

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Magnetic Poly(vinylpyridine)‐Coated Carbon Nanotubes: An Efficient Supramolecular Tool for Wastewater Purification

et al. 2012

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Herein, we report the first example of a supramolecular carbon nanotube (CNT)-based magnetic depolluting agent for divalent metal ion (M(2+)) removal from aqueous solutions. In particular, magnetic multi-walled carbon nanotubes (m-MWCNTs) coated with poly(vinylpyridine) (PVPy) self-aggregate in aqueous solutions that contain divalent metal ions (such as Zn(2+), Cu(2+) and Pb(2+)) to form tight insoluble bundles in which the M(2+) ions remain trapped through pyridyl-M(2+)-pyridyl interactions. Magnetic filtration ultimately affords the efficient separation of the depolluted solution from the precipitated M(2+)-CNT agglomerates. Upon acid treatment, the supramolecular threads could be disassembled to afford the free CNT-polymer hybrid, thus allowing recycling of the depolluting agent. All materials and complexation/decomplexation steps were thoroughly characterised by using thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), transmission and scanning electron microscopy (TEM and SEM, respectively). The quantification of the M(2+) residual concentrations in water was evaluated by using inductively coupled plasma optical emission spectroscopy (ICP-OES), which showed that, depending on the metal cation, this material can remove up to 99% of the contaminant.

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Turning Waste into Wealth: Remotely NIR Light‐Controlled Precious Metal Recovery by Covalently Functionalized Black Phosphorus

et al. 2021

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It is a great challenge to refine precious metals from e‐wastes under mild conditions without hazardous reagents. Herein, black phosphorus (BP) was covalently functionalized with poly(N‐isopropylacrylamide) (PNIPAM) to obtain thermo/near‐infrared (NIR)‐responsive BP−P for precious metal recovery. Precious metals (Au, Ag, and Pd) with higher redox potentials than BP−P could be efficiently recovered by reduction‐driven enrichment. Taking Au as an example, the recovery process presented fast kinetics (<15 min), excellent selectivity, and high efficiency (≈98 %). Remote operation with NIR light could generate heat by BP, which induced the hydrophilic‐to‐hydrophobic transition of PNIPAM, allowing the spontaneous gathering, facile collection, and practical recycle of BP−P following Au extraction. Thanks to the unique features of BP−P, not only could high‐quality Au nanoparticles (20–30 nm) be economically extracted (cost: $0.731–1.222 g−1 Au nanoparticles; 5–6 orders of magnitude lower than the market price), but also the formed BP−P‐Au nanocomposites have potential application in hydrogen evolution reaction.

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Ion exchange recovery of platinum from chloride solutions

Cited by 59 publications

References 12 publications

Recovery of platinum, palladium and rhodium from acidic chloride leach solution using ion exchange resins

Recovery of platinum, palladium and rhodium from acidic chloride leach solution using ion exchange resins

Magnetic Poly(vinylpyridine)‐Coated Carbon Nanotubes: An Efficient Supramolecular Tool for Wastewater Purification

Turning Waste into Wealth: Remotely NIR Light‐Controlled Precious Metal Recovery by Covalently Functionalized Black Phosphorus

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