Recovery of gold from gold slag by wood shaving fly ash

Aworn, Amphol; Thiravetyan, Paitip; Nakbanpote, Woranan

doi:10.1016/j.jcis.2005.02.048

Cited by 27 publications

(10 citation statements)

References 18 publications

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“…The results were given in Table 1. Due to gold(III) forms strong complexes with I − , S 2 O 3 2− , CN − , (NH 2 ) 2 CS and SCN − [3,22,31,37], the various solution of these ions were also examined as eluting agent. As can be seen in Table 1, the recoveries of gold ions were not quantitative when I − , S 2 O 3 2− , CN − , (NH 2 ) 2 CS and SCN − as eluent.…”

Section: Effect Of Eluentmentioning

confidence: 99%

See 1 more Smart Citation

Separation and enrichment of gold(III) from environmental samples prior to its flame atomic absorption spectrometric determination

Şentürk¹,

Gündoğdu²,

Bulut³

et al. 2007

Journal of Hazardous Materials

107

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Section: Effect Of Eluentmentioning

confidence: 99%

“…Gold possesses a unique combination of properties that have resulted in its use in a wide range of industrial applications [1]. Cyanide, as a leaching agent, is commonly used in industrial gold extraction [2,3]. The recovery of gold by the adsorption of auro-cyanide complexes onto activated carbon is a well-established process [4].…”

Section: Introductionmentioning

confidence: 99%

Separation and enrichment of gold(III) from environmental samples prior to its flame atomic absorption spectrometric determination

Şentürk¹,

Gündoğdu²,

Bulut³

et al. 2007

Journal of Hazardous Materials

107

View full text Add to dashboard Cite

“…This increasing price of gold with its ever increasing demand is not only due to the jewelry values but also due to the vast application of gold in various high-tech industries (Aworn et al 2005;Xiong et al 2009;Adhikari et al 2007;Yap and Mohamed 2007;Kwak et al 2010;Ha et al 2010) for its unique physical and chemical characteristics (Senturk et al 2007). In recent years, the manufacturing of electronic and electrical devices is a major demand sector for precious metals (Chancerel et al 2009) like gold.…”

Section: Introductionmentioning

confidence: 99%

Selective recovery of gold(III) using cotton cellulose treated with concentrated sulfuric acid

et al. 2011

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Novel utilization of cotton cellulose was developed by chemically modifying with concentrated sulfuric acid to prepare a novel kind of adsorption gel for gold. The adsorption behaviors of the gel were investigated for various metals from acidic chloride media. The gel was found to be highly selective for Au(III) over other precious and base metals tested over the whole concentration range of hydrochloric acid. The maximum adsorption capacity for Au(III) was evaluated as 6.21 mmol/g at 303 K. The amount of adsorbed Au(III) was increased with increasing temperature. A kinetic study for the adsorption of Au(III) at various temperatures confirmed the endothermic adsorption process following pseudo-first order kinetics. The activation energy was evaluated as 78.8 kJ/mol. Interestingly, it was found that the adsorbed Au(III) was reduced to elemental form which was evidenced by the clearly visible elemental gold particles which was further confirmed by means of the X-ray diffraction spectrum and optical microscope image of the gel after the adsorption of Au(III). The mechanism of Au(III) adsorption on the cotton gel and its reduction to elemental gold was proved from the results of IRspectra. The main mechanism could be explained in terms of the coordination of Au(III) to oxygen atom of C-O-C linkage of cross linked cotton gel and to the oxygen atoms of the hydroxyl groups at C 2 and C 3 atoms of pyranose ring of cotton cellulose followed by the reduction to metallic gold. The adsorbed gold in the cotton gel can easily be recovered by incineration.

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“…Due to the low level of gold in the environmental samples and its great importance, many articles have been reported on the separation of traces of gold in water and other matrices containing Cd 2+ , Zn 2+ , Cu 2+ , Ni 2+ , Mn 2+ , Co 2+ , Pd 2+ , Hg 2+ , Pb 2+ , Pt 4+ , Fe 3+ , alkaline and alkaline earth ions before their actual determination [2][3][4][5][6][7][8]. However, the low level of gold in drinking waters is not compatible with the detection limit and some of these methods are expensive, unselective and require careful experimental conditions and considerable time consuming.…”

Section: Introductionmentioning

confidence: 99%

Utility of solid phase extraction for spectrophotometric determination of gold in water, jewel and ore samples

Amin

2010

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Recovery of gold from gold slag by wood shaving fly ash

Cited by 27 publications

References 18 publications

Separation and enrichment of gold(III) from environmental samples prior to its flame atomic absorption spectrometric determination

Separation and enrichment of gold(III) from environmental samples prior to its flame atomic absorption spectrometric determination

Selective recovery of gold(III) using cotton cellulose treated with concentrated sulfuric acid

Utility of solid phase extraction for spectrophotometric determination of gold in water, jewel and ore samples

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