Selective extraction of palladium(II) from hydrochloric acid solutions with phosphonium extractants

Cieszyńska, Anna; Wiśniewski, Maciej

doi:10.1016/j.seppur.2011.05.025

Cited by 144 publications

(93 citation statements)

References 41 publications

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“…Almost 100 % of palladium is efficiently extracted from 0.1 M HCl using Cyphos IL 101, in the presence of ions such as Ni, Cu, Pb, Fe(III), Rh and Ru, while only 12 % of the other metal is transported into the organic phase. Separation of palladium from platinum is not as effective (70 % Pd and 65 % Pt) [93] . Increase in HCl concentration in the aqueous phase has a negative effect on the efficiency of palladium extraction with phosphonium ILs, while stripping takes place preferably with 0.5 M NH 4 OH.…”

Section: Ionic Liquids In Extractionmentioning

confidence: 99%

Recent trends in metals extraction

Regel‐Rosocka¹

2013

REVMETAL

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After near 70 years of practical usage, solvent extraction is a perfectly mastered technique of separation, widely used on an industrial scale for the separation of metals mainly from raw materials. However, currently, in the era of depleting natural resources and increasingly less accessible deposits, environmental restrictions, etc., an increasing interest, both from social and economical constrains, is being directed at the extraction of metals from the secondary sources (such as batteries, electronic scrap). In many cases, solvent extraction, due to its operational characteristics, can be considered as the Best Available Technology for the purpose of separating multielemental metal solutions. This paper provides a brief overview of past achievements and present scenario of solvent extraction investigations and developments, describing some recently commissioned solvent extraction plants, whereas the Skorpion Zinc plant (Namibia) for zinc extraction from raw materials and caesium removal from radioactive High Level Wastes (HLWs) are told over in detail as case studies. The paper also presents some proposals for the use of liquid-liquid extraction to separate metal ions from secondary sources (e.g. cobalt from industrial waste streams). The review highlights the emerging use of ionic liquids as new extractants for metals, providing an insight into this exciting research field. Despite its detractors, solvent extraction has entered in force into XXI century as a leading separation technology for metals. KeywordsLiquid-liquid extraction; Metals; Extractants; Ionic liquids; Caesium. Tendencias recientes en la extracción de metales ResumenDespués de casi 70 años de uso práctico, la extracción líquido-líquido o extracción con disolventes es una técnica de separación muy evolucionada, utilizándose a escala industrial en el beneficio de metales obtenidos de diversas materias primas. Sin embargo, con el agotamiento de los recursos naturales y el aumento de depósitos minerales de más difícil acceso, restricciones medio ambientales, etc., ha aumentado el interés, tanto desde el punto de vista económico como social, en la recuperación de los metales contenidos en materiales secundarios (baterías, chatarras electrónicas). En muchos casos, la extracción líquido-líquido y debido a sus características operacionales, se considera como la mejor tecnología disponible respecto a la separación de disoluciones metálicas multielementales. Este trabajo considera algunos de estos anteriores estudios y presenta la situación actual de la tecnología en cuanto a investigaciones y desarrollos, describiendo algunas de las más recientes plantas industriales en funcionamiento, detallando la planta Skorpion (Namibia) para la obtención de zinc, así como investigaciones encaminadas a la eliminación de cesio de efluentes radioactivos. También se presentan algunas de las propuestas encaminadas a la separación-recuperación de metales de materiales secundarios (por ejemplo, cobalto). Por último, se describe el uso emergente de los iones líq...

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Section: Ionic Liquids In Extractionmentioning

confidence: 99%

Recent trends in metals extraction

Regel‐Rosocka¹

2013

REVMETAL

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“…Recycling of 0.005 M [QP][Cl], loaded with Pd 2+ , was tested in 5 cycles of extraction (one step) and stripping (two steps with 0.5 M NH 4 OH). After this procedure percentage extraction of Pd 2+ does not change and remains 98 and 55% for the feed containing 0.1 and 3 M HCl, respectively Cieszynska & Wisniewski, 2011). [QP][Cl] is a stable extractant that can be regenerated and used again for efficient extraction of Pd 2+ .…”

Section: +mentioning

confidence: 99%

Ionic Liquids in Separation of Metal Ions from Aqueous Solutions

Regel‐Rosocka¹,

Wiśniewski²

2011

Applications of Ionic Liquids in Science and Technology

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“…Because the consumption of Pd increases each year, the recovery of this metal from either ores or secondary resources is essential. Several methods are used in the separation of Pd(II) from the leaching solutions of HCl or HNO 3 , such as precipitation [3], ion exchange [2,4], and solvent extraction [5][6][7][8][9][10][11][12]. Among these methods, solvent extraction is suitable for the separation of platinum group metals (PGMs) because of its high selectivity and the purity of metals thus obtained [9].…”

Section: Introductionmentioning

confidence: 99%

Extraction of Palladium(II) from Hydrochloric Acid Solutions by Solvent Extraction with Mixtures Containing Either Cyanex 301 or LIX 63

Truong

Lee

Son

2017

Metals

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Cyanex 301 and 5,8-diethyl-7-hydroxyldodecane-6-oxime (LIX 63) can selectively extract Pd(II) over Pt(IV) from concentrated hydrochloric acid solutions. Therefore, solvent extraction experiments have been performed by extractant mixtures containing either Cyanex 301 or LIX 63, and the extraction behavior of Pd(II) was compared. Among the mixtures of Cyanex 301, the highest synergistic enhancement coefficient was achieved by mixing Cyanex 301 and trioctylphosphine oxide (TOPO). However, it was very difficult to strip the Pd(II) from the loaded mixture phase. Among the mixtures of LIX 63, the mixture of LIX 63 and alamine 336/TOPO enhanced the extraction of Pd(II). Although the synergistic coefficient by Cyanex 301 + TOPO was higher than that by LIX 63 + Alamine 336, the Pd(II) in the loaded mixture phase of LIX 63 and alamine 336 was easily stripped by thiourea.

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Selective extraction of palladium(II) from hydrochloric acid solutions with phosphonium extractants

Cited by 144 publications

References 41 publications

Recent trends in metals extraction

Recent trends in metals extraction

Ionic Liquids in Separation of Metal Ions from Aqueous Solutions

Extraction of Palladium(II) from Hydrochloric Acid Solutions by Solvent Extraction with Mixtures Containing Either Cyanex 301 or LIX 63

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