Selective separation of gold from iron ore samples using ion exchange resin

Al-Merey, R.; Hariri, Z.; Hilal, J. Abu

doi:10.1016/s0026-265x(03)00092-4

Cited by 43 publications

(19 citation statements)

References 22 publications

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“…Grafted cellulose and lignin copolymers have, on one hand, the characteristics of the electron exchangers and, on the other hand, characteristics of complexes with high degree of selectivity. They have been used as new cellulose and lignin materials for noble metal ions containing wastewater treatments for chemical and electronic industries (Alguacil, 1998;Al-Merey et al, 2003;Azarudeen et al, 2009;Chang &Chen, 2006;Farang et al, 2007;Hussain & Khan 2011;Ladhe, 2008;Nguyen et al, 2010;O Malley, 2002;Ran et al, 2002;Zhong et al, 2007). Chemical and electrochemical modification of cellulose and lignin is based on synthesis of new materials with 4-vinylpyridine or similar vinyl derivatives of heterocyclic skeleton with at least one nitrogen atom, and they were used as specific chemisorbents of noble metals ions from dissolved aqueous solutions.…”

Section: The Application Of New Grafted Cellulose and Lignin Copolymementioning

confidence: 99%

New Technology for the Synthesis of New Materials Based on Cellulose and Sorption of Noble Metals

Bojanić¹,

Pavlović²

2012

Noble Metals

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Section: The Application Of New Grafted Cellulose and Lignin Copolymementioning

confidence: 99%

New Technology for the Synthesis of New Materials Based on Cellulose and Sorption of Noble Metals

Bojanić¹,

Pavlović²

2012

Noble Metals

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“…There are many methods such as precipitation, ion exchange, filtration, solvent extraction, and liquid-liquid extraction for recovering PGMs from aqueous solutions [10][11][12][13][14][15]. Among the above methods, ion exchange seems to be the most suitable method for the recovery of PGMs in the case of low concentration due to its low cost and high efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…The separation and recovery of platinum by ion exchange has been reported extensively [12][13][14][15], but literatures concerning the adsorption process of Pd complexes onto anion exchange resin are limited. In this work, a macroporous strong basic anion exchange resin (D201) was used.…”

Section: Introductionmentioning

confidence: 99%

Adsorption behavior of Pd(II) from aqueous solutions by D201 resin

et al. 2011

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The adsorption and desorption behaviors of Pd(II) on D201 resin were investigated. The effects of parameters including HCl concentrations, initial metal ion concentrations, contact time, and temperature on the adsorption of Pd(II) were studied by batch method. The HCl concentration for studying the effects was set from 0.01 to 2 mol·L −1 and the optimal adsorption condition is in 0.01 mol·L −1 HCl solution. The adsorption isotherm of Pd(II) on D201 resin was determined and the equilibrium data fitted the Langmuir model better than the Freundlich model. The maximum uptake capacity of Pd(II) was 253 mg·g −1 at 298 K. The adsorption could be best described by the liquid film diffusion model. The enthalpy variation (ΔH) and entropy change (ΔS) of adsorption were equal to 2.49 kJ·mol −1 and 74.8 J·(mol·K) −1 respectively, indicating that the adsorption was endothermic in nature. Furthermore, the negative value of ΔG showed that movement of adsorbate from the solution to adsorbent surface was a spontaneous process. Pd(II) could be eluted with 0.5 mol·L −1 HNO 3 solution. Thomas model was applied to experimental column data to determine the characteristic parameters of the column useful for process design.

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“…In combination with these techniques, various preconcentration and separation procedures have also been used. These include solvent extraction [14,15], solid phase extraction [16][17][18][19][20][21], coprecipitation [22] and electrodeposition [23,24].…”

Section: Introductionmentioning

confidence: 99%

Cloud point extraction and preconcentration of gold in geological matrices prior to flame atomic absorption determination

et al. 2010

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Brilliant green was used as a complexing agent in cloud point extraction (CPE) and applied for selective preconcentration of trace amounts of gold in geological matrices. The analyte in the initial aqueous solution was acidified with hydrochloric acid (0.1 M) and octylphenoxypolyethoxyethanol (Triton X-114) was added as a surfactant. After phase separation, based on the cloud point separation of the mixture, the surfactant rich phase was diluted with methanol and the analyte determined in the surfactant rich phase by flame atomic absorption spectrometry (FAAS). After optimization of the complexation and extraction conditions, a preconcentration factor of 31 was obtained for only 10 mL of sample. The analytical curve was linear in the range of 3-1000 ng mL −1 and the limit of detection was 1.5 ng mL −1 . The proposed method was applied to the determination of gold in geological samples.. Warsaw and Springer-Verlag Berlin Heidelberg. © Versita

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Selective separation of gold from iron ore samples using ion exchange resin

Cited by 43 publications

References 22 publications

New Technology for the Synthesis of New Materials Based on Cellulose and Sorption of Noble Metals

New Technology for the Synthesis of New Materials Based on Cellulose and Sorption of Noble Metals

Adsorption behavior of Pd(II) from aqueous solutions by D201 resin

Cloud point extraction and preconcentration of gold in geological matrices prior to flame atomic absorption determination

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