Separation of platinum(IV) and rhodium(III) from acidic chloride solution by ion exchange with anion resins

Sun, Panpan; Lee, J.Y.; Lee, M.S.

doi:10.1016/j.hydromet.2011.12.009

Cited by 25 publications

(9 citation statements)

References 16 publications

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“…Ionexchangers play a vital role in the separation process and some of the details on the ionexchangers are mentioned in table 4 Desorption of Pt, Pd from the loaded resins was better using acidic thiourea. In both [119] and [120], it is stated that the adsorption of Rh on the resins and desorption from the loaded resins using the eluting agent were difficult. Alternative methods need to be used for the recovery of Rh.…”

Section: Ion-exchange Methodsmentioning

confidence: 99%

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Recovery of Noble Metals from Spent Catalysts: A Review

Padamata

Yasinskiy

Polyakov

et al. 2020

Metall Mater Trans B

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During several past decades, plenty of technologies for platinum group metals (PGM) and rhenium (Re) recovery from electronic wastes and spent catalysts have been developed and published. The reasons for the rising interest in this area are: □ The abundance of these elements in the earth's crust is less than 10 -3 ppm (~6.6 10 4 t all over the world); □ global demand for PGMs is over 590 t; □ electronics and catalysts industry consumes over 90% of precious metals (about 65% of Pd, 45% of Pt and 84% of Rh are consumed in catalytic converters); □ properties of PGMs and Re (resistance towards corrosion and oxidation, high melting temperatures, electrical conductivity, and catalytic activity) are of great commercial interest.Even though several comprehensive reviews on the recovery of precious metals from spent catalysts have been recently published, several developments were out of the attention of the scientific community. The reviews divide the technologies into hydro-and pyrometallurgical ones. However, the variety of different approaches requires a more detailed classification. This article is an overview of the recently reported works and the comparison of different technologies in terms of extraction efficiency, environmental friendliness, and capital and operational expenditures. The new electrochemical method, which is now under development, is also presented.

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Section: Ion-exchange Methodsmentioning

confidence: 99%

“…The elution process is carried out on loaded organic resins by adding eluents like Na2CO3, NaCl, and a mixture of thiourea and HCl to strip the PGMs. Separation of Pt and Rh from the HCl solution with varying concentrations of 0.1-5 M using IX technique was investigated in[119]. Three different ion exchangers were used namely AGMP-1, AG1-x2, and AG1-x8.…”

mentioning

confidence: 99%

Recovery of Noble Metals from Spent Catalysts: A Review

Padamata

Yasinskiy

Polyakov

et al. 2020

Metall Mater Trans B

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“…27) Na 2 CO 3 , NaCl, NaOH, thiourea and Na 2 S 2 O 3 have each shown the ability to elute platinum from several basic anion exchange resins. 15,28) In this study, elution of platinum from the loaded Diaion SA10AP resin, after removal of iron, was tested using all of the above agents. Loading experiments were carried out by loading the leaching solution with 40 g/dm 3 of resin.…”

Section: Elution Of Ptmentioning

confidence: 99%

“…29) Thiourea is a soft ligand, which was also reported to be effective in stripping Pt/Pd from a loaded organic phase, such as DEHTPA and Alamine336. 28,30) The elution reaction might be explained by the following reaction:…”

Section: Elution Of Ptmentioning

confidence: 99%

Recovery of Platinum from Chloride Leaching Solutions of Spent Reforming Catalysts by Ion Exchange

et al. 2015

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Platinum and base metals (Al, Fe, Si) are present in the chloride leaching solutions of spent reforming catalysts. In order to develop a process to recover platinum from such leaching solutions, batch and continuous ion exchange experiments were performed using a strong anionic resin (DiaionSA10AP). The adsorption equilibrium data of Pt are described by the Langmuir adsorption isotherm. Batch experiments indicate that it is possible to separate Pt and Fe from other metal ions in the present leaching solution. Fe was selectively removed from the loaded resin using diluted HCl, while Pt was eluted using thiourea after Fe removal. The results of column experiments verified the feasibility of the separation and recovery of platinum from leaching solutions using the present process. The elution efficiency exceeded 99% for both Pt and Fe. The recovery percentage of Pt from the leaching solution using this method was 99.3%.

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“…A variety of adsorbents, including clays, zeolites, dried plant parts, agricultural waste biomass, biopolymers, metal oxides, microorganisms, sewage sludge, fly ash, cation and anion exchangers and activated carbon have been used for lead(II)ions removal. Ion exchange now is a well-established technology, particularly in water purification and the concentration and removal of hazardous substances at very low concentrations in chemical process industries [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

INVESTIGATE THE ADSORPTION KINETICS AND ISOTHERM MODELS OF Pb(II) IONSREMOVAL BY RESINEXTMK-8 STRONG ACID CATION EXCHANGE RESIN.

Wassel

Swelam

Elzaref

2013

Al-Azhar Bulletin of Science- Basic Science Sector

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In the present study we investigated the adsorption kinetics and isotherm models of Pb(II) removal by Resinex TM K-8 strong acid cation exchange resin at different temperatures. Adsorption kinetics is investigated to develop an understanding of controlling reaction pathways (e.g. chemisorptions versus physisorption) and the mechanisms (e.g. surface versus intraparticle diffusion) of adsorption reactions. Kinetic data can be used to predict the rate at which the target contaminant is removed from aqueous (pure water) and aqueous-organic solutions (formic, acetic, propionic) and equilibrium adsorption isotherms are used to quantify the adsorptive capacity of an adsorbent. The results can be used to assess the utility of the adsorbent for the heavy metal removal, in particular Pb(II) ions adsorption, in the field scale. Thermodynamic parameters, the Gibbs free energy change (∆G), enthalpy change (∆H), and entropy change (∆S), were calculated and show that adsorption of Pb(II) ions is spontaneous and endothermic in nature.

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Separation of platinum(IV) and rhodium(III) from acidic chloride solution by ion exchange with anion resins

Cited by 25 publications

References 16 publications

Recovery of Noble Metals from Spent Catalysts: A Review

Recovery of Noble Metals from Spent Catalysts: A Review

Recovery of Platinum from Chloride Leaching Solutions of Spent Reforming Catalysts by Ion Exchange

INVESTIGATE THE ADSORPTION KINETICS AND ISOTHERM MODELS OF Pb(II) IONSREMOVAL BY RESINEXTMK-8 STRONG ACID CATION EXCHANGE RESIN.

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