A Review of Copper and Nickel Extraction from Wastewater by Emulsion Liquid Membrane (ELM)

Ma, Hao; Waters, Kristian E.; Wang, Haibei

doi:10.1007/s42461-022-00726-6

Cited by 5 publications

(3 citation statements)

References 248 publications

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“…The leaching test equipment containing a beaker, agitator, potentiometer, and pH meter is shown in Figure 1. Copper, cobalt, and other ions contained in the leach residue and leaching liquor were analyzed, and the metal leaching percentage was calculated using Equation (20) [21,22]:…”

Section: Stirring Leaching Processmentioning

confidence: 99%

“…The mineralogy factors affecting copper and cobalt leaching are further explored, and a new concept of oreblending leaching can be proposed. On this basis, a joint study on ore beneficiation and hydrometallurgy was carried out, providing a reference for the development of this type of ore. Copper, cobalt, and other ions contained in the leach residue and leaching liquor were analyzed, and the metal leaching percentage was calculated using Equation (20) [21,22]:…”

Section: Stirring Leaching Processmentioning

confidence: 99%

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Agitation Leaching Behavior of Copper–Cobalt Oxide Ores from the Democratic Republic of the Congo

et al. 2023

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Agitation leaching is a promising technology in hydrometallurgy for treating copper–cobalt oxide ores. In this work, the behavior of oxide ores containing around 2.3% Cu and 0.3% Co received from Congo was investigated for varying particle size, acidity, pulp density, temperature, leaching time, and reduction potential. XRD, optical microscopy (OM), and ICP-OES methods were used to examine the chemical composition, morphology, and metal content of the samples. The copper and cobalt recovery reached 88.2% and 82.5%, respectively, at room temperature, with a leaching time of 4 h, a pulp density of 33%, an acidity of 178 g/L, and no reductant. The Cu and Co remaining in the leaching residue were found to be in their sulfide forms and coated with dense and fine calcium sulfate. To improve the metal recovery, a combination of flotation and agitation leaching of the flotation tailings method was adopted, after which the Cu and Co recovery reached 96.6% and 86.0%, respectively.

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Section: Stirring Leaching Processmentioning

confidence: 99%

Section: Stirring Leaching Processmentioning

confidence: 99%

Agitation Leaching Behavior of Copper–Cobalt Oxide Ores from the Democratic Republic of the Congo

et al. 2023

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“…In the past few decades, several methods have been developed and used for removing heavy metal ions from water, including precipitation, flocculation, membrane separation, ion exchange, and evaporation [5][6][7]. Each of these methods has its own advantages and disadvantages in terms of efficiency, sensitivity, selectivity, and specificity [8,9].…”

Section: Introductionmentioning

confidence: 99%

Blend of polyvinylpyrrolidone/thermally reduced graphene for adsorption of heavy metal ions in water

Le,

Nguyen,

Tran

et al. 2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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This paper presents the preparation of a modified polyvinylpyrrolidone (PVP)/graphene mixture and evaluates its adsorption capacity for heavy metal ions in water. Graphene with a high specific surface area of about 362 m2 g−1 was obtained through the thermal separation of graphite oxide (GO), which had been synthesised from graphite by the Hummer method. The graphene-PVP blend was prepared by dispersing the graphene into a PVP solution and then crosslinking it to prevent washout by water. This crosslinking ensured a well-dispersed and stable graphene-PVP blend. The maximum adsorption capacity of graphene-PVP for Cu2+ and Cd2+ ions was found to be 158 mg g−1 and 134 mg g−1, respectively, at pH 3 and a contact time of 30 min. The experimental results were found to be consistent with Langmuir and pseudo-second-order kinetic models. The study further reveals that the adsorption mechanism of Cu2+ and Cd2+ ions on graphene-PVP follows an ion exchange mechanism, driven by strong interactions between PVP and metal ions. The study provides an easy, low-cost, and eco-friendly method to produce highly adsorptive graphene-PVP materials.

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Emulsion liquid membrane (ELM) enhanced by nanoparticles and ionic liquid for extracting vanadium ions from wastewater

Al-Obaidi,

Selem,

Al-Dahhan

2024

Environ Sci Pollut Res

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A Review of Copper and Nickel Extraction from Wastewater by Emulsion Liquid Membrane (ELM)

Cited by 5 publications

References 248 publications

Agitation Leaching Behavior of Copper–Cobalt Oxide Ores from the Democratic Republic of the Congo

Agitation Leaching Behavior of Copper–Cobalt Oxide Ores from the Democratic Republic of the Congo

Blend of polyvinylpyrrolidone/thermally reduced graphene for adsorption of heavy metal ions in water

Emulsion liquid membrane (ELM) enhanced by nanoparticles and ionic liquid for extracting vanadium ions from wastewater

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