Gold Recovery from HCl Solutions using Cyphos IL‐101 (a Quaternary Phosphonium Ionic Liquid) Immobilized in Biopolymer Capsules

Campos, Karol; Vincent, Thierry; Bunio, P.; Trochimczuk, Andrzej W.; Guibal, Eric

doi:10.1080/07366290802301572

Cited by 87 publications

(60 citation statements)

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“…Moreover, nickel is not extracted, and therefore selective separation of Fe(III) from Ni(II) is possible. Cyphos IL 101 has been also used for the impregnation of Amberlite XAD-7 beds and biopolymer capsules in order to effectively remove Zn(II), Hg(II), Au(III) from HCl solution [130][131][132] .…”

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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“…Besides imidazolium and ammonium ILs, also phosphonium ionic liquids are considered to be prospective for substance separation (Bradaric et al, 2003b), and have been proposed as solvents for crown ether extractants mixed with organic solvents and as carriers in impregnated resins (Campos et al, 2008a(Campos et al, , 2008bGallardo et al, 2008;. In fact, many phosphonium ILs used for separation are based on widely known and applied Cytec Industries extractants such as trialkylphosphine oxides or Cyanex 272; however there is still little information about their use in extraction processes.…”

Section: Phosphonium Ilsmentioning

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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“…Consequently, liquid-liquid extraction that use Cyphos IL-101 has made the separation occurred consistent, gold is adsorbed on the Cyphos IL-101 through the stoichiometric interaction of R3R'P + with AuCl4 -, therefore recovery % the extraction efficiency of Au is high, in quantitative extraction (>99%) can be achieved, because 90% or even 95% is not considered sufficient for gold extraction. [77][78][79] . Accordingly, modified approach of IL structure is needed to improve the performance in gold separation.…”

Section: Frequent Types Of Il Used Is [C N Mim]mentioning

confidence: 99%

“…The experimental results showed that the addition of soft anions will decrease the capability of Au extraction 30,76,86 . Therefore, to improve the IL performance in Au separation, an extractant can also be modified by adding chelator 62,63,79,87 . Au has similar properties such as has ion charge is 2+ in aqueous condition as like as other ion metals such as Cu, Ag, Zn, and Pd, so that one of the most important task is to separate the ions from one another.…”

Section: Optimization Of Gold Separation Condition By Ionic Liquids Ementioning

confidence: 99%

“…Futhermore, another IL like Cyphos IL-101 (tetraalkylphosphonium chloride) is also has the potential to separate gold, because it has a stronger affinity for Au(III) than another metal ions viz. Pd(II), Zn (II), and Pt(IV) based on the competition effect (in large excess of the competitor metal) [77][78][79] . Consequently, liquid-liquid extraction that use Cyphos IL-101 has made the separation occurred consistent, gold is adsorbed on the Cyphos IL-101 through the stoichiometric interaction of R3R'P + with AuCl4 -, therefore recovery % the extraction efficiency of Au is high, in quantitative extraction (>99%) can be achieved, because 90% or even 95% is not considered sufficient for gold extraction.…”

Section: Frequent Types Of Il Used Is [C N Mim]mentioning

confidence: 99%

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Solvent extraction of gold using ionic liquid based process

Makertihartha

Zunita

Rizki

et al. 2017

AIP Conference Proceedings

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Abstract. In decades, many research and mineral processing industries are using solvent extraction technology for metal ions separation. Solvent extraction technique has been used for the purification of precious metals such as Au and Pd, and base metals such as Cu, Zn and Cd. This process uses organic compounds as solvent. Organic solvents have some undesired properties i.e. toxic, volatile, excessive used, flammable, difficult to recycle, low reusability, low Au recovery, together with the problems related to the disposal of spent extractants and diluents, even the costs associated with these processes are relatively expensive. Therefore, a lot of research have boosted into the development of safe and environmentally friendly process for Au separation. Ionic liquids (ILs) are the potential alternative for gold extraction because they possess several desirable properties, such as a the ability to expanse temperature process up to 300°C, good solvent properties for a wide range of metal ions, high selectivity, low vapor pressures, stability up to 200°C, easy preparation, environmentally friendly (commonly called as "green solvent"), and relatively low cost. This review paper is focused in investigate of some ILs that have the potentials as solvent in extraction of Au from mineral/metal alloy at various conditions (pH, temperature, and pressure). Performances of ILs extraction of Au are studied in depth, i.e. structural relationship of ILs with capability to separate Au from metal ions aggregate. Optimal extraction conditon in order to gain high percent of Au in mineral processing is also investigated.

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Gold Recovery from HCl Solutions using Cyphos IL‐101 (a Quaternary Phosphonium Ionic Liquid) Immobilized in Biopolymer Capsules

Cited by 87 publications

References 58 publications

Recent trends in metals extraction

Recent trends in metals extraction

Ionic Liquids in Separation of Metal Ions from Aqueous Solutions

Solvent extraction of gold using ionic liquid based process

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