Extraction of molybdenum(VI) from sulfate media by 3-pyridineketoxime and its quaternary salts

Wejman-Gibas, Katarzyna; Wieszczycka, Karolina; Wojciechowska, Aleksandra; Ochromowicz, Katarzyna; Pohl, Paweł

doi:10.1016/j.seppur.2015.11.037

Cited by 18 publications

(6 citation statements)

References 30 publications

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“…However, quantitative recovery of the metal was attained only when using Ox-3PC10-PrCl at pH = 2.5 in toluene with the addition of 10 vol.% decan-1-ol. The oxime 3PC10, although proven to be a weak extractant for Mo(VI), formed more stable complexes than its quaternary salts [72]. ) exhibited good extraction properties towards silver and palladium ions.…”

Section: Ilmentioning

confidence: 98%

Ionic Liquids as Components of Systems for Metal Extraction

Yudaev

Chistyakov

2022

ChemEngineering

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This review addresses research and development on the use of ionic liquids as extractants and diluents in the solvent extraction of metals. Primary attention is given to the efficiency and selectivity of metal extraction from industrial wastewater with ionic liquids composed of various cations and anions. The review covers literature sources published in the period of 2010–2021. The bibliography includes 98 references dedicated to research on the extraction and separation of lanthanides (17 sources), actinides (5 sources), heavy metals (35 sources), noble metals, including the platinum group (16 sources), and some other metals.

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Section: Ilmentioning

confidence: 98%

Ionic Liquids as Components of Systems for Metal Extraction

Yudaev

Chistyakov

2022

ChemEngineering

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“…Due to the excellent coordination properties of N atom toward Ni(II), LIX solvent extractants and pyridine derivative extractants are capable of combining and forming extracted complexes with Ni(II) via the N atom. , Thus, a variety of LIX solvent extractants and pyridine derivative extractants have been synthesized and tested. Some of the representative extractants are as follows: LIX63, DH2,3,4PIA, 3PC10, 3PC-PrCl, and 2, 3, 4PC . As depicted in Figure , these extractants containing oximido (−CNOH) are susceptible to degradation in the presence of organic acids .…”

Section: Introductionmentioning

confidence: 99%

Direct Extraction of Ni(II) from Acidic Polymetallic Sulfate Media with a Novel Synergistic Extraction System of DNNSA-MSL211

Zheng

Cao

et al. 2023

ACS Sustainable Chem. Eng.

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Direct extraction of Ni(II) from Fe(III), Al(III), Ca(II), Mg(II), and Mn(II) is a bottleneck issue in the hydrometallurgy processes of laterite-nickel ore, spent batteries, and other secondary sources. One of the biggest challenges in achieving direct extraction of Ni(II) is the lack of stable and efficient extractants. Hence, a novel bipyridine extractant MSL211 was designed and synthesized in this paper. With its strong steric resistance and electrostatic interaction, MSL211 can form a stable eight-membered chelating ring with Ni(II), thereby having a high bonding ability toward Ni(II). Therefore, based on the high bonding ability of MSL211 toward Ni(II) and the low extraction capacity of DNNSA for Fe(III), an efficient synergistic extraction system of DNNSA-MSL211 was proposed. The synergistic extraction system of DNNSA-MSL211 realizes direct extraction of Ni(II) from Fe(III), Al(III), Ca(II), Mg(II), and Mn(II) without neutralization, precipitation, and solid/liquid separation processes, which are inevitable but problematic processes in the current hydrometallurgy processes for removing Fe(III), Al(III), and Mn(II). The effects of the molar ratios of DNNSA:MSL211, shaking time, temperature, O/A ratios, and equilibrium pH on the extraction behavior of Ni(II) were investigated. Under optimum conditions, the extraction efficiency of Ni(II) was as high as 97.62%, and the separation coefficient of Ni(II) over all impurities was greater than 400. To elucidate the mechanism of the high selectivity of DNNSA-MSL211 toward Ni(II), DFT calculations were carried out to calculate the binding energy (ΔE) and Gibbs free energy (ΔG(ext)) of the extraction process. Furthermore, this paper investigated the entire ″extraction-stripping″ process, demonstrating that the synergistic extraction system of DNNSA-MSL211 avoids neutralization, precipitation, and solid/liquid separation processes, minimizes hazardous waste generation, and shortens process flow while meeting the objectives of sustainable and clean production.

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“…Molybdenum(VI), Mo(VI), is a transition metal that exhibits many industrial applications such as the forming of nickel-based super alloys, within the hydrodesulfurization of petroleum, engine lubrication, and so on. Molybdenum is selectively recovered from acid leach solutions by means of solvent extraction (SX) using either alkylphosphonic acids, − oximes, − or alkylamines. − These extractants are normally dissolved in kerosene or similar organic solvents which show several drawbacks such as high volatility, flammability, and toxicity. Lately, room-temperature ionic liquids (RTILs) have been proposed as an alternative to those organic solvents in SX because of their excellent properties, such as negligible vapor pressure, nonflammability, and in some cases, remarkable hydrophobicity.…”

Section: Introductionmentioning

confidence: 99%

Task-Specific Ionic Liquids as Extractants for the Solvent Extraction of Molybdenum(VI) from Aqueous Solution Using Different Commercial Ionic Liquids as Diluents

Quijada‐Maldonado

Sanchez

Perez

et al. 2018

Ind. Eng. Chem. Res.

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In this work, the recovery of molybdenum(VI) (Mo) from aqueous solutions was carried out by solvent extraction (SX) using ammonium and phosphonium-based task-specific ionic liquids (TSILs) as extractants diluted in kerosene and two other hydrophobic room-temperature ionic liquids (RTILs). Four different TSILs were used as extractants: trioctylmethylammonium bis(2-ethylhexyl) phosphate [TOMA][D2EHP]; trioctylmethylammonium benzoate [TOMA][BA]; trihexyltetradecylphosphonium bis(2-ethylhexyl) phosphate [P6,6,6,14][D2EHP]; and trihexyltetradecylphosphonium benzoate [P6,6,6,14][BA]. These TSILs were synthesized to assess the effect of the cation and anion on the SX of Mo(VI). Experimental results indicated that high extraction percentages of Mo(VI) were obtained with all the synthesized TSILs. Besides that, the best cation was [TOMA]+ for all the diluents and [BA]− was the best anion when kerosene and 1-octyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [omim][Tf2N], were the diluents. Furthermore, the SX process using these ionic liquids followed an anion-exchange mechanism for kerosene and [omim][Tf2N] as diluents. Finally, the stripping was successfully performed with a solution of ammonium carbonate, and the extent of stripping depended on the selected diluent.

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Extraction of molybdenum(VI) from sulfate media by 3-pyridineketoxime and its quaternary salts

Cited by 18 publications

References 30 publications

Ionic Liquids as Components of Systems for Metal Extraction

Ionic Liquids as Components of Systems for Metal Extraction

Direct Extraction of Ni(II) from Acidic Polymetallic Sulfate Media with a Novel Synergistic Extraction System of DNNSA-MSL211

Task-Specific Ionic Liquids as Extractants for the Solvent Extraction of Molybdenum(VI) from Aqueous Solution Using Different Commercial Ionic Liquids as Diluents

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