Selective recovery of gold on functionalized resins

Pilśniak-Rabiega, Magdalena; Trochimczuk, Andrzej W.

doi:10.1016/j.hydromet.2014.03.016

Cited by 32 publications

(15 citation statements)

References 20 publications

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“…Several processes can be used including solvent extraction, electrochemical deposition and membranes processes . However, these processes are generally poorly competitive for low‐concentration effluents and ion‐exchange and chelating resins or biosorbents may be more competitive. Impregnated resins are combining the beneficial effects of high recovery efficiency of solvent extraction and the stability associated to resin.…”

Section: Introductionmentioning

confidence: 99%

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

Navarro

Lira

Saucedo

et al. 2017

Macromolecular Symposia

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Phosphonium‐based ionic liquids have been successfully impregnated on several Amberlite XAD resins for recovering Au(III) chloro‐anions. Sorption performance was evaluated through sorption isotherms (very favorable profiles) and uptake kinetics (controlled by the resistance to intraparticle diffusion). The binding mechanism consists of an ion‐exchange between AuCl4− and the counter ion bound to the phosphonium cation. Increasing the IL loading proportionally increases the sorption capacity but decreases the sorption speed (by increasing the resistance to intraparticle diffusion). Changing the counter ion on the phosphonium cation (i.e., complex anion vs. chloride ion) does not improve sorption performance. Highly porous resin (high pore volume and large pore size), such as Amberlite XAD‐1180, shows the best diffusion performance and highest sorption velocity (lower equilibrium time).

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Section: Introductionmentioning

confidence: 99%

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

Navarro

Lira

Saucedo

et al. 2017

Macromolecular Symposia

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show abstract

“…With the ever-growing demand of gold, primary resources become so limited that low-content secondary sources cannot be ignored anymore. Some methods reported in literature for gold recovery from aqueous solutions include extraction, ion exchange, chemical http precipitation and adsorption [1][2][3][4]. In recent years, adsorption has drawn more attention than other methods due to its ability to recover even trace quantities of metal ions.…”

Section: Introductionmentioning

confidence: 99%

Gold-recovery PVDF membrane functionalized with thiosemicarbazide

Wang

Cao

et al. 2015

Chemical Engineering Journal

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“…The results demonstrated that the half equations (10) and (11) for the reaction of Au species were as follows:…”

Section: Xpsmentioning

confidence: 98%

“…The properties of adsorbents play a key role in adsorption ability. For this perspective, extensive attention has been focused on developing novel adsorbents with high selectivity, cost-effectiveness and high capacity [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%