A review of copper cyanide recovery technologies for the cyanidation of copper containing gold ores

Dai, X.; Simons, Andrew M.; Breuer, P.L.

doi:10.1016/j.mineng.2011.10.002

Cited by 113 publications

(59 citation statements)

References 43 publications

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“…8b). Its parameters are close to those observed for a homogeneous Cu(II) complex with EDTA (1:1) of similar structure (g || = 2.321, g \ = 2.040) [37], which indicates that the Cu(II)-EDTA complex formed in the course of Cu(CN) 2 À destruction in the presence of EDTA Eq. (4).…”

Section: Cu(cn)supporting

confidence: 76%

“…These results suggest that Cu(CN) 3 2À was transformed to Cu(CN) 2 À from 30 min to 90 min. The peaks at 223 nm and 234 nm lowered gradually till its disappearance at 130 min, indicating the Cu(CN) 2 À was destroyed gradually till its complete destruction at 130 min. The spectrum at that time showed the similar absorption characteristics to Cu(II)-EDTA solution.…”

Section: Cu(cn)mentioning

confidence: 99%

“…, and Cu(CN) 2 À [3]. All forms of cyanide in wastewater must be adequately treated before being allowed to discharge due to its high toxicity.…”

Section: àmentioning

confidence: 99%

“…8a). It is indicated that Cu(CN) 2 À dissociated and Cu(I) was liberated partially with continuous oxidation of cyanide Eq. (2).…”

Section: Cu(cn)mentioning

confidence: 99%

“…Cyanide is widely used in the electroplating industry [1] and metallurgical process [2]. Usually, cyanide and copper are present in the effluents simultaneously, and the cyanide species generally include CN À , Cu(CN) 4 …”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Enhanced destruction of Cu(CN)32− by H2O2 under alkaline conditions in the presence of EDTA/pyrophosphate

Chen

Zhao

Liu

et al. 2014

Chemical Engineering Journal

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Section: Cu(cn)supporting

confidence: 76%

Section: Cu(cn)mentioning

confidence: 99%

“…, and Cu(CN) 2 À [3]. All forms of cyanide in wastewater must be adequately treated before being allowed to discharge due to its high toxicity.…”

Section: àmentioning

confidence: 99%

“…8a). It is indicated that Cu(CN) 2 À dissociated and Cu(I) was liberated partially with continuous oxidation of cyanide Eq. (2).…”

Section: Cu(cn)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Enhanced destruction of Cu(CN)32− by H2O2 under alkaline conditions in the presence of EDTA/pyrophosphate

Chen

Zhao

Liu

et al. 2014

Chemical Engineering Journal

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Instant Detection of Hydrogen Cyanide Gas and Cyanide Salts in Solid Matrices and Water by using Cu^II and Ni^II Complexes of Intramolecularly Hydrogen Bonded Zwitterions

Nair

Raju

Jana

et al. 2018

Chemistry A European J

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A series of intramolecularly hydrogen-bonded zwitterionic compartmental ligands HL1-HL4, containing a pendent diamine arm that is monoprotonated and an aldehyde functionality at two different ortho-positions of a 4-halophenoxide, is reported herein. Single-crystal X-ray diffraction (SXRD) provides persuasive evidence for the identification of this class of proton-transferred zwitterions at room temperature. The solid-state photoluminescent nature of these zwitterions remains intact in aqueous and organic solutions. Grinding of HL1 and HL2 with Cu /Ni salts develop turn-on probes 1-4. Compounds 1 and 4 are dinuclear Cu and Ni species, respectively. Compound 2 is a tetranuclear Cu complex. Interestingly, compound 3 is a mononuclear Ni species in which both nitrogen atoms in the pendant diamine arm are protonated and, therefore, not coordinated to the Ni center. All these probes (1-4) display an instant response to the poison gas hydrogen cyanide (HCN) and cyanide salts present in both solid matrices and aqueous (100 % water) solution. Selective and rapid sensing of HCN gas and cyanide salts in solid/soil/water phases, without any interference, by the mechanosynthesized complexes 1-4 can be perceived easily by the naked eye under a hand-held UV lamp.

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A Mature Tool to Address New Challenges: Harnessing Coordination Chemistry for The Sustainable Copper Recovery from Industrial and E‐Waste in The Age of Energy Transition

Ostellari,

Gross

2024

Eur J Inorg Chem

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Copper is arguably one of the most strategic metal for the energy transition, particularly in the shift from fossil fuel‐based engines to sustainable and renewable energy sources, with related and broader electrification efforts. While global copper mineral resources are far from depleted, their uneven distribution poses significant supply risks, especially in regions like Europe. In 2023, the European Union (EU) recognized this risk by designating copper as a strategic raw material (SRM), highlighting the need for innovative copper recovery processes. Copper recovery from industrial and electronic waste has been approached through various methods, primarily categorized into pyrometallurgy and solvo‐ and hydrometallurgy. The latter offers greater tunability and potential for sustainability, particularly when leveraging coordination chemistry. This review focuses on the most promising hydrometallurgical processes for copper recovery from industrial and e‐waste (i.e., electronic waste), with a special emphasis on the role of coordination chemistry in supporting these methods. We posed particular focus on the adaptability and versatility of the coordination chemistry‐based processes to the highly heterogenous composition of the copper‐containing wastes.

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A review of copper cyanide recovery technologies for the cyanidation of copper containing gold ores

Cited by 113 publications

References 43 publications

Enhanced destruction of Cu(CN)32− by H2O2 under alkaline conditions in the presence of EDTA/pyrophosphate

Enhanced destruction of Cu(CN)32− by H2O2 under alkaline conditions in the presence of EDTA/pyrophosphate

Instant Detection of Hydrogen Cyanide Gas and Cyanide Salts in Solid Matrices and Water by using Cu^II and Ni^II Complexes of Intramolecularly Hydrogen Bonded Zwitterions

A Mature Tool to Address New Challenges: Harnessing Coordination Chemistry for The Sustainable Copper Recovery from Industrial and E‐Waste in The Age of Energy Transition

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A review of copper cyanide recovery technologies for the cyanidation of copper containing gold ores

Cited by 113 publications

References 43 publications

Enhanced destruction of Cu(CN)32− by H2O2 under alkaline conditions in the presence of EDTA/pyrophosphate

Enhanced destruction of Cu(CN)32− by H2O2 under alkaline conditions in the presence of EDTA/pyrophosphate

Instant Detection of Hydrogen Cyanide Gas and Cyanide Salts in Solid Matrices and Water by using CuII and NiII Complexes of Intramolecularly Hydrogen Bonded Zwitterions

A Mature Tool to Address New Challenges: Harnessing Coordination Chemistry for The Sustainable Copper Recovery from Industrial and E‐Waste in The Age of Energy Transition

Contact Info

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Resources

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Instant Detection of Hydrogen Cyanide Gas and Cyanide Salts in Solid Matrices and Water by using Cu^II and Ni^II Complexes of Intramolecularly Hydrogen Bonded Zwitterions