Solvent Extraction of Mn(II) from Strong Hydrochloric Acid Solutions by Alamine336

Lee, Man Seung; Filiz, M.

doi:10.2320/matertrans.mra2008213

Cited by 9 publications

(6 citation statements)

References 12 publications

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“…31 P NMR spectra of P 8,8,8,12 Cl and P 8,8,8,12 R 2 POO both exhibited a singlet at around 34.5 ppm, as shown in Figure2. This signal was attributed to the quaternary phosphorus atom of P 8,8,8,12[18,25].…”

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confidence: 86%

“…that occurred during the extraction process. As shown in the31 P NMR spectrum of P 8,8,8,12 R 2 POO in Figure 2d, the content of bis(2,4,4-trimethylpenthyl)phosphinic acid, which is present at 47.4 ppm decreased after adding excess Figure 2. 31 P NMR spectra of (a) P 8,8,8,12 Cl, (b) P 8,8,8,12 R 2 POO, (c) P 8,8,8,12 R 2 POO after extraction, and (d) P 8,8,8,12 R 2 POO after NaOH treatment.…”

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confidence: 86%

“…The final product was dried using an evaporator (EYELA N-1000, Tokyo, Japan) at 40°C in vacuo for 3 h. P 8,8,8,12 Cl was obtained as a clear liquid with 98% yield (by mass) and its purity exceeded 96.0%. P 8,8,8,12 Cl was characterized by 1 H, 13 C, and 31 P NMR spectroscopy (Bruker Bio Spin AVANCE500, Kanagawa, Japan) and elemental analysis (Yanaco CHN Corder MT-5, Kyoto, Japan). 1 (15 g).…”

Section: Reagentsmentioning

confidence: 99%

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Recovery of Cobalt and Manganese from Spent Lithium-ion Batteries using a Phosphonium-based Ionic Liquid

Firmansyah

Fajar

Mukti

et al. 2021

SERDJ

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A novel ionic liquid (IL) trioctyldodecyl phosphonium bis (2,4,4-trimethylpentyl)phosphinate was developed as a recovery agent for cobalt(II) and manganese(II) from spent lithium-ion batteries (LIBs).Absence of organic diluent provides an advantageous factor to IL-based extraction than the conventional one. Co(II) and Mn(II) were extracted quantitatively from the aqueous phase to the IL phase. Extracted Co(II) and Mn(II) were stripped from the IL using water and NH 4 NO 3 , respectively. After stripping, the IL can be reused as the extractant, facilitating the realization of a continuous extraction process. The developed hydrophobic IL shows promise as an extractant for Co(II) and Mn(II) from the spent LIBs. IntroductionLithium-ion batteries (LIBs) have become crucial components of many modern technologies. LIBs are attractive for power storage because of their high charge density, which allows them to be more compact than other rechargeable batteries [1]. The increased use of various types of portable equipment, such as mobile devices and personal computers, in recent decades, has led to huge growth in their market and greatly stimulated the production of LIBs. However, the great increase of LIB usage will be followed by the problem of spent LIBs in forthcoming years [2]. The cathodes of LIBs contain various valuable metals, such as lithium (Li), cobalt (Co), nickel (Ni), and manganese (Mn). Therefore, recycling spent LIBs is considered beneficial from both economic and environmental aspects. To date, the approaches used to recycle valuable metals in LIBs mainly involve pyrometallurgical and hydrometallurgical processes [3].Liquid-liquid extraction is an important hydrometallurgical method in metal processing. For spent LIBs, liquid-liquid extraction is generally carried out using an inorganic acid, such as H 2 SO 4 , HCl, or HNO 3 , as an acidic leaching agent [4].

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confidence: 86%

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confidence: 86%

Section: Reagentsmentioning

confidence: 99%

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Recovery of Cobalt and Manganese from Spent Lithium-ion Batteries using a Phosphonium-based Ionic Liquid

Firmansyah

Fajar

Mukti

et al. 2021

SERDJ

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“…In this estimation of equilibrium constant, the activity coefficients of species in the aqueous phase are calculated by applying the Bromley equation and the complex formation reactions between manganese and chloride ions. 10 Sousa Junior et al reported the equilibrium constant for the solvent extraction of manganese from sulfate solutions with D2EHPA in isoparaffin. The modified Davies equation was applied for the calculation of activity coefficients of all solutes in the aqueous phase.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Lee and Filiz calculated the extraction equilibrium constant for the solvent extraction reaction of Mn(II) from hydrochloric acid solutions with Alamine 336. In this estimation of equilibrium constant, the activity coefficients of species in the aqueous phase are calculated by applying the Bromley equation and the complex formation reactions between manganese and chloride ions . Sousa Junior et al reported the equilibrium constant for the solvent extraction of manganese from sulfate solutions with D2EHPA in isoparaffin.…”

Section: Introductionmentioning

confidence: 99%

Chemical Model on the Synergistic Solvent Extraction of Manganese(II) from Chloride Solutions by a Mixture of Cyanex 272 and Cyanex 301

Kumar

Sonu²,

Lee

2013

J. Chem. Eng. Data

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Synergistic solvent extraction of manganese(II) using a mixture of Cyanex 272 and Cyanex 301 from chloride solutions has been studied in the view of developing a chemical model. Slope analysis method was used for the determination of extraction stoichiometry. The equilibrium constant for the synergistic solvent extraction reaction was calculated by taking into account of the complex formation reactions between Mn(II) and chloride ions. The activity coefficients of species in the aqueous phase were estimated by applying the Bromley equation. The calculated distribution ratios of Mn(II) agreed well with the experimentally measured values.

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Recovery of valuable metals from the hydrochloric leaching solution of reduction smelted metallic alloys from spent lithium‐ion batteries

Tran

Moon

Lee

2022

J of Chemical Tech & Biotech

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BACKGOUND The recycling of valuable metals from spent lithium‐ion batteries (LIBs) has attracted much attention. This work investigated the recovery of cobalt (Co), nickel (Ni), copper (Cu), iron (Fe) and manganese (Mn) from metallic alloys generated from the reduction smelting of spent LIBs by a hydrometallurgical process. RESULTS The complete leaching conditions for metals from the alloys were optimized as: 2.0 mol L–1 hydrochloric acid (HCl), 5% (v/v) hydrogen peroxide (H2O2) with 30 g L–1 pulp density at 60 °C within 150 min. Metal ions such as Co(II), Ni(II), Cu(II), Fe(III), Mn(II) and silicon [Si(IV)] from HCl leachate were separated sequentially in four steps using solvent extraction and oxidative precipitation. First, Fe(III) was completely extracted over others using 0.5 mol L–1 Di‐(2‐Ethyl Hexyl) phosphoric acid (D2EHPA). Second, Cu(II) from the Fe(III)‐free raffinate was selectively extracted using 0.25 mol L–1 Cyanex301. Fe(III) and Cu(II) were quantitatively stripped from their loaded phases using 50% (v/v) aqua regia. Third, Co(II) from the Fe(III)‐ and Cu(II)‐free raffinate was selectively extracted over Ni(II), Mn(II) and Si(IV) with 0.25 mol L–1 ALi‐SCN and stripped with 10% (v/v) ammonia (NH3). Finally, Mn(II) from the raffinate containing Ni(II) and Si(IV) was separated at pH 3 by oxidative precipitation of MnO2 after adding 10% (v/v) sodium hypochlorite (NaClO). Mass balance analysis of the whole process indicated that the recovery and purity percentage of the metal ions were >99.9%. CONCLUSION With its effective and selective performance, the application of this process to real‐life recovery of valuable metals from spent LIBs can be considered. © 2021 Society of Chemical Industry (SCI).

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Solvent Extraction of Mn(II) from Strong Hydrochloric Acid Solutions by Alamine336

Cited by 9 publications

References 12 publications

Recovery of Cobalt and Manganese from Spent Lithium-ion Batteries using a Phosphonium-based Ionic Liquid

Recovery of Cobalt and Manganese from Spent Lithium-ion Batteries using a Phosphonium-based Ionic Liquid

Chemical Model on the Synergistic Solvent Extraction of Manganese(II) from Chloride Solutions by a Mixture of Cyanex 272 and Cyanex 301

Recovery of valuable metals from the hydrochloric leaching solution of reduction smelted metallic alloys from spent lithium‐ion batteries

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