Purification of recovered phosphoric acid by extracting aluminium with di-2-ethylhexyl phosphoric acid

Reuna, Sini; Väisänen, Ari

doi:10.1007/s11696-021-01848-9

Cited by 3 publications

(3 citation statements)

References 20 publications

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“…In general, it was observed that Al 3+ and Fe 3+ remained in the D2EPHA. This recalcitrant stripping of Fe 3+ and Al 3+ from D2EPHA has been reported [53,54]. However, the stripping of metals from higher concentrated extractant (40% v/v D2EPHA) was investigated (Figure 8b).…”

Section: Conceptual Flow Sheetsupporting

confidence: 63%

Sequential Recovery of Critical Metals from Leached Liquor of Processed Spent Lithium-Ion Batteries

Ajiboye,

Dzwiniel

2023

Batteries

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The processing and extraction of critical metals from black mass is important to battery recycling. Separation and recovery of critical metals (Co, Ni, Li, and Mn) from other metal impurities must yield purified metal salts, while avoiding substantial losses of critical metals. Solvent extraction in batch experiments were conducted using mixed metal sulphates obtained from the leach liquor obtained from spent and shredded lithium-ion batteries. Selective extraction of Mn2+, Fe3+, Al3+ and Cu2+ from simulated and real leached mixed metals solution was carried out using di-2-ethylhexylphophoric acid (D2EPHA) and Cyanex-272 at varying pH. Further experiments with the preferred extractant (D2EPHA) were performed under different conditions: changing the concentration of extractant, organic to aqueous ratio, and varying the diluents. At optimum conditions (40% v/v D2EPHA in kerosene, pH 2.5, O:A = 1:1, 25 °C, and 20 min), 85% Mn2+, 98% Al3+, 100% Fe3+, and 43% Cu2+ were extracted with losses of only trace amounts (<5.0%) of Co2+, Ni2+, and Li+. The order of extraction efficiency for the diluents was found to be kerosene > Exxal-10 >>> dichloromethane (CH2Cl2) > toluene. Four stages of stripping of metals loaded on D2EPHA were performed as co-extracted metal impurities were selectively stripped, and a purified MnSO4 solution was produced. Spent extractant was regenerated after Fe3+ and Al3+ were completely stripped using 1.0 M oxalic acid (C2H2O4).

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Section: Conceptual Flow Sheetsupporting

confidence: 63%

Sequential Recovery of Critical Metals from Leached Liquor of Processed Spent Lithium-Ion Batteries

Ajiboye,

Dzwiniel

2023

Batteries

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“…In these industrial applications, the purity requirement for PA, especially for wet-process phosphoric acid (WPA), is extremely high. Some techniques for purifying PA have recently been developed, such as crystallization [2,3], ion exchange [4,5], adsorption [6,7], and solvent extraction [8][9][10]. Among these, solvent extraction is an ideal purifying approach because of its low energy consumption, comparatively simpler production technology and equipment, and ease of automating batch production.…”

Section: Introductionmentioning

confidence: 99%

Variation of Extraction Yield and Droplet Size during Emulsification Solvent Extraction of Wet-Process Phosphoric Acid

Cao

2023

SERDJ

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This research focuses on emulsification solvent extraction for purifying wet-process phosphoric acid. The effects of various parameters, including stirring speed, phase ratio and emulsification time on the extraction yield and droplet size distribution were investigated. The optimal conditions were determined. The influence of time and physical properties of solvent on average droplet diameter was fitted by dimensional analysis. The results showed that the mathematical model has a strong agreement with the experimental data. This model was reliable to predicting the droplet size in different conditions of manufacturing emulsion.

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“…Pulse on/off time, wire feed, gap voltage, and the relative atomic number (Ra) of the metal removed are all variables that have been shown to influence MRR. [15][16] With increasing SiC volume, MRR reduced and Ra increased, according to experiments conducted with L9 OA, which is employed for the research in this paper. The effects of pulse on time, pulse off time, and wire speed on reinforcement of fly ash were studied [17] at a range of weight percentiles.…”

Section: Introductionmentioning

confidence: 99%

Optimization of process parameters on wire cut electrical discharge machining and surface integrity studies of AA6070/MgO composites

Vinoth,

Rajasekar,

Sathish

et al. 2023

J. Phys.: Conf. Ser.

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There are a variety of uses for metal matrix composites (MMC), including the aerospace and automotive industries. Because of their benefits including light weight and inexpensive cost, they are popular. Wire cut electric discharge machining (WEDM) stands out as a great option for creating complex or complicated shapes out of composite materials, especially when compared to other common non-traditional machining processes. An AA6070 metal matrix composite containing 5% and 10% MgO weight fraction (wt) was made using the stir casting method in this work. Various process factors, such as wire tension (WT), dielectric pressure (Pd), gap voltage (Vg) and peak current (IP) are taken into account when the AMMC specimen is machined utilising WEDM. Slot machining rate (MR) and surface roughness (Ra) can be measured and assessed using L18 mixed Orthogonal Array (OA) investigations. Experiments are examined using TOPSIS and ANOVA methodologies for order preference based on similarity to the ideal results (ANOVA). Analysis has shown that the best mixture of processing factors for improved MR and Ra: wt = 5%, vg = 50 V, WT = 13 g, Ip = 9 A, and Pd = 15 bar. Machining Rate and Ra have ideal process parameters of 1.5 mm/min and 3.648 m. ANOVA shows that MR and Ra are significantly influenced by peak current.

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Purification of recovered phosphoric acid by extracting aluminium with di-2-ethylhexyl phosphoric acid

Cited by 3 publications

References 20 publications

Sequential Recovery of Critical Metals from Leached Liquor of Processed Spent Lithium-Ion Batteries

Sequential Recovery of Critical Metals from Leached Liquor of Processed Spent Lithium-Ion Batteries

Variation of Extraction Yield and Droplet Size during Emulsification Solvent Extraction of Wet-Process Phosphoric Acid

Optimization of process parameters on wire cut electrical discharge machining and surface integrity studies of AA6070/MgO composites

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