An efficiency strategy for cobalt recovery from simulated wastewater by biphasic system with polyethylene glycol and ammonium sulfate

Amjad, Razieh Sobhi; Asadollahzadeh, Mehdi; Torkaman, Rezvan; Torab‐Mostaedi, Meisam

doi:10.1038/s41598-022-21418-7

Cited by 10 publications

(2 citation statements)

References 48 publications

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“…Reaction 6 requires excess ammonia addition (Reinhardt, 1998). REEs extraction can then be achieved by solvent extraction, using non aqueous methods (Wang et al, 2018;Amjad et al, 2022).…”

Section: Potential For Oxidative Dissolution Of Rres In Hydrogenated ...mentioning

confidence: 99%

Rare Erath Elements: Their Geological Sources and the Potential of Organosulfonic Acids For Rare Earth Elements Leaching from Coal Ash and Process Optimization

Miadonye,

Amadu

2023

Preprint

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The orbital elactronic structure of Rare Earth Elements (REEs) contains many unpaired electrons which render them capable of storing large amount of magnetic energy in addition to being critical for hitech applications. Geological deposits are their conventional sources, and the current supply chain relies on production from these deposits. However, given their critical roles in the anticipated global energy transition, there is the need to explore other viable sources to supplement current and future supplies chains. REEs occur in coal as accessory minerals and their concentration in coal ash to levels that rival those of geological deposits has been estab;ished by sophisticated analytical chemical methods. Conmventional hydrometallurgical processes rely on acid leaching, using tioxic mineral acids. Meanwhile, organosulfonic acids have pKa values that rival those of conventional minerals acid and can, therefore, be used in hydrometallurgy but their uses in this regard are not well documented in the literature. In this extensive review, we have covered geological sources of REEs exaustively in addition to showing the potential of organosulfonic acids as environmentally benign lixiviants for REEs extraction from coal ash. We have also shown how process optimization can be achieved using advance technologies while using organisulfonic acids. Moreover, we have shown current and future global market trends regarding the production of select organosulfonic acids, and the anticipated global increase in their production motivates the use of organosulfonic acids as viable lixiviants for REEs extraction from caol ash deposits.

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“…Reaction 6 requires excess ammonia addition (Reinhardt, 1998). REEs extraction can then be achieved by solvent extraction, using non aqueous methods (Wang et al, 2018;Amjad et al, 2022).…”

Section: Potential For Oxidative Dissolution Of Rres In Hydrogenated ...mentioning

confidence: 99%

Rare Erath Elements: Their Geological Sources and the Potential of Organosulfonic Acids For Rare Earth Elements Leaching from Coal Ash and Process Optimization

Miadonye,

Amadu

2023

Preprint

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“…Two solutes in the system with different entropies of hydration are concentrated in two different phases after salting out . Recently, many studies on the separation of valuable metals from waste batteries using an ABS have been reported. − Coutinho and co-workers showed a remarkable separation ratio for Co(II) and Ni(II) using the ionic liquid (IL)-based ABS composed of tributyltetradecylphosphonium chloride ([P 44414 ]Cl) and NiCl 2 for a spent-battery recovery. They also optimized the process route and integrated leaching and ion recovery.…”

Section: Introductionmentioning

confidence: 99%

Amino Acid Leaching of Critical Metals from Spent Lithium-Ion Batteries Followed by Selective Recovery of Cobalt Using Aqueous Biphasic System

et al. 2023

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In this study, we have successfully developed an eco-friendly process to integrate the leaching and separation of cobalt (Co) from a spent lithium-ion battery (LIB) cathode using an amino acid-based aqueous biphasic system (ABS). We, for the first time, demonstrated a simple method for leaching a LIB cathode using only amino acids. In addition, we have investigated the leaching mechanism using the typical cathode active material lithium cobalt oxide (LiCoO 2 ). Then, the Co was selectively extracted by a biphasic system (amino acid− PPG400−H 2 O). This novel process has an excellent prospect in the field of spent-battery recycling because of its eco-friendly and processsimplified advantages.

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Removal of Co(II) and various metal ions from the residue of the zinc plant through solvent extraction using both acid and neutral extractants

Maleki,

Torkaman,

Asadollahzadeh

2024

Can J Chem Eng

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The recovery of cobalt from secondary sources is a crucial issue in technology development, particularly for its numerous applications in various industries. Solvent extraction has proven an effective method for metallic ions separation from secondary sources. The main goal of this work was to study the separation of metals by solvent extraction technique from zinc plant leach waste. Initially, several extractants, including Cyanex 272, Cyanex 301, LIX 5640 H, Alamine 336, and tri‐n‐octylamine (TOA), were tested to treat the leach solution. It was discovered that the saponified extractant di‐(2‐ethylhexyl) phosphoric acid (D2EHPA) (10%) + tri‐n‐butyl phosphate (TBP) (10%) effectively eliminated interfering elements such as manganese, zinc, and iron, with extraction efficiencies of 95%, 98%, and 99.9%, respectively. To increase the concentration of cobalt in the purified solution, the cobalt recovery step was performed using various acids on the loaded organic phase. The best outcome was achieved using ammonium sulphate salt (1 M), which recovered about 50% of the cobalt present in the organic phase. The recovered cobalt was then subjected to the electrowinning process to produce cobalt metal of high purity. A cathodic current density of 100 A/m2 was determined to be the optimal current for the electrolyte solution. Lastly, scanning electron microscope (SEM) and X‐ray fluorescence (XRF) analyses were carried out to examine the structure and purity of the resulting metallic cobalt, which was found to have a purity of 99.5%.

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An efficiency strategy for cobalt recovery from simulated wastewater by biphasic system with polyethylene glycol and ammonium sulfate

Cited by 10 publications

References 48 publications

Rare Erath Elements: Their Geological Sources and the Potential of Organosulfonic Acids For Rare Earth Elements Leaching from Coal Ash and Process Optimization

Rare Erath Elements: Their Geological Sources and the Potential of Organosulfonic Acids For Rare Earth Elements Leaching from Coal Ash and Process Optimization

Amino Acid Leaching of Critical Metals from Spent Lithium-Ion Batteries Followed by Selective Recovery of Cobalt Using Aqueous Biphasic System

Removal of Co(II) and various metal ions from the residue of the zinc plant through solvent extraction using both acid and neutral extractants

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