Separation and recovery of heavy metals from concentrated smelting wastewater by synergistic solvent extraction using a mixture of 2-hydroxy-5-nonylacetophenone oxime and bis(2,4,4-trimethylpentyl) -phosphinic acid

Sun, Qi; Wang, Wei; Yang, Limei; Huang, Songtao; Zheng, Xu; Ji, Zhongguang; Li, Yan; Hu, Yihanna

doi:10.1080/07366299.2018.1446680

Cited by 30 publications

(12 citation statements)

References 24 publications

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“…The melting effluents are rich sources of heavy metals such as zinc, copper, nickel, and cadmium. Studies on the recovery of these ions with 2-hydroxy-5-nonylacetophenone oxime and Cyanex272 have shown that the solvent extraction process can play an influential role in their recovery and reduce environmental impact 24 . The technology for extracting zinc from molten effluents has been extensively developed, but the issue of removing other ions has received little research.…”

Section: Introductionmentioning

confidence: 99%

Recycling of zinc ions in disc-donut column considering forward mixing mass transfer, and effects of pulsed and non-pulsed condition

Asadollahzadeh

Torkaman

Torab‐Mostaedi

et al. 2022

Sci Rep

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The current study focuses on the recovery of zinc ions by solvent extraction in the pulsed contactor. The Zn(II) ions from chloride solution were extracted into the organic phase containing di-(2-ethylhexyl) phosphoric acid (D2EHPA) extractant. The resulting data were characterized for the relative amount of (a) pulsed and no-pulsed condition; and (b) flow rate of both phases. Based on the mass balance equations for the column performance description, numerical computations of mass transfer in a disc-donut column were conducted and validated the experimental data for zinc extraction. Four different models, such as plug flow, backflow, axial dispersion, and forward mixing were evaluated in this study. The results showed that the intensification of the process with the pulsed condition increased and achieved higher mass transfer rates. The forward mixing model findings based on the curve fitting approach validated well with the experimental data. The results showed that an increase in pulsation intensity, as well as the phase flow rates, have a positive impact on the performance of the extractor. In contrast, the enhancement of flow rate led to the reduction of the described model parameters for the adverse phase.

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Section: Introductionmentioning

confidence: 99%

Recycling of zinc ions in disc-donut column considering forward mixing mass transfer, and effects of pulsed and non-pulsed condition

Asadollahzadeh

Torkaman

Torab‐Mostaedi

et al. 2022

Sci Rep

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“…In this sense, when cation-exchange processes are used for the separation of As(V) from Cu(II)/Zn(II) streams or when anion-exchange resins are used for the selective removal of the As(V)-oxyanion, the formation of Cu(II) and Zn(II)-arsenates on the impregnated ion-exchange (IX) resin beds limits their effective separation and subsequent valorisation [7]. Similar limitations have been reported using solvent extraction or selective precipitation [1,8,9]. Recently, membrane-based processes have also been used to separate, concentrate, and purify metallurgical and hydrometallurgical streams [10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 87%

Integration of selectrodialysis and solvent-impregnated resins for Zn(II) and Cu(II) recovery from hydrometallurgy effluents containing As(V)

Reig

Vecino

Hermassi

et al. 2019

Separation and Purification Technology

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“…Liquid streams associated with both Ni plating and industrial sludge leaching typically contain high amounts of SO4 2-and Ca that can reach up to 560 mM and 11 mM, respectively [14,18].…”

Section: Introductionmentioning

confidence: 99%

Selective and enhanced nickel adsorption from sulfate- and calcium-rich solutions using chitosan

Nicomel

Otero-González

Folens

et al. 2021

Separation and Purification Technology

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Highlights• Chitosan effectively adsorbed Ni from a real Ni/Ca/SO4 2bearing leachate • Sulfate had a positive effect on Ni adsorption while Ca did not have any effect• Formation of NiSO4 0 species contributed to the enhanced Ni adsorption onto chitosan • Chitosan has a Ni qmax of 1.49 mmol/g even with 500 mM SO4 2and 10 mM Ca present • Chitosan was selective for Ni over Ca as validated in a column setup ABSTRACT Nickel (Ni) is an economically important metal characterized by its mechanical strength and anticorrosion properties. With the increasing industrial demand for Ni and the depleting accessible Ni primary ores, sustainable technologies are required for the recovery of this metal from alternative resources. In this study, adsorption using chitosan was investigated as a sustainable technique to recover Ni from sulfate (SO4 2-) and calcium (Ca) rich secondary resources. The effects of pH, contact time, and the presence of SO4 2and Ca on Ni adsorption were investigated in batch experiments. Chemical speciation modeling was performed to analyze how the predominant Ni species present under different conditions may affect the efficiency of the adsorption process. The comparison of chitosan's maximum Ni adsorption capacities in the absence (1.00 mmol/g) and presence (1.49 mmol/g) of 500 mM SO4 2and 10 mM Ca indicated the positive effect of these ions on Ni adsorption. The predominance of the neutrally charged NiSO4 0 species in Ni/SO4 2system has contributed to the enhanced Ni adsorption on chitosan as verified by X-ray photoelectron spectroscopy (XPS) analysis.However, kinetic studies confirmed that the Ni adsorption rate decreased by 4.5 times when SO4 2was present. The subsequent continuous Ni adsorption from a real SO4 2--rich leachate in a column setup revealed that chitosan is selective for Ni over Ca and Cr with selectivity quotients of 9.6 (KNi/Ca) and 3.0 (KNi/Cr). Overall, this study indicated that Ni complexation with SO4 2enhances the Ni adsorption capacity of chitosan, but slows down the adsorption process.

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Separation and recovery of heavy metals from concentrated smelting wastewater by synergistic solvent extraction using a mixture of 2-hydroxy-5-nonylacetophenone oxime and bis(2,4,4-trimethylpentyl) -phosphinic acid

Cited by 30 publications

References 24 publications

Recycling of zinc ions in disc-donut column considering forward mixing mass transfer, and effects of pulsed and non-pulsed condition

Recycling of zinc ions in disc-donut column considering forward mixing mass transfer, and effects of pulsed and non-pulsed condition

Integration of selectrodialysis and solvent-impregnated resins for Zn(II) and Cu(II) recovery from hydrometallurgy effluents containing As(V)

Selective and enhanced nickel adsorption from sulfate- and calcium-rich solutions using chitosan

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