A cleaner strategy for comprehensive recovery of waste SmCo magnets based on deep eutectic solvents

Ni, Shuainan; Su, Jia; Zhang, Hepeng; Zeng, Zhiyuan; Zhi, Hailan; Sun, Xiaoqi

doi:10.1016/j.cej.2021.128602

Cited by 29 publications

(11 citation statements)

References 46 publications

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“…Additionally, the combination of DA:LA (2 : 1) hydrophobic deep eutectic solvent (HDES) enabled the recovery of 99 % of Fe(III) and Co(II). [19] Co, Ni, Mn, Cu To recover the metals from the metal-loaded DES phase, a 1.0 mol/L solution of HCl was employed as strippant. [20] Ni, Cu Choline chloride (ChCl) Urea ChCL:Urea (1 : 2) DES was used as an extractant to extract Ni(II) and Cu(II) from water and biological samples.The method exhibited a robust response over concentration range from 0.25 to 50 μg/L for Cu(II) and from 4 to 125 μg/L for Ni(II).…”

Section: Chemicals and Instruments Usedmentioning

confidence: 99%

“…[15] Table 1 presents studies involving the application of DES for extracting transition metals from different sources using solvent extraction technique. [16][17][18][19][20][21][22] In the current investigation, metal (Fe, Co & Ni) extraction from simulated crud solution has been performed using hydrophobic DES, menthol and decanoic acid diluted with kerosene. A series of experiments were carried out following the design of experiments and the data were modeled with the help of RSM to find out the optimized condition for extraction taking into consideration, the combined effect of process parameters like pH, shaking time, and DES molarity on the extraction.…”

Section: Introductionmentioning

confidence: 99%

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Process Optimization Using Box‐Behnken Design for the Solvent Extraction and Separation of Iron, Cobalt, and Nickel from Simulated Crud Solution

Panda,

Mishra

2024

ChemistrySelect

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The corrosion product deposit (crud) found on the surface of the fuel rod of the pressurized water reactors (PWRs) chiefly made up of nickel ferrite. Fe, Co, Ni and Cr are the major elements exist in PWR crud. Ascribable to the simplicity in execution, handling, and option for recyclability, solvent extraction technique has been broadly used in nuclear energy sector. In the present investigation, the recovery of iron, cobalt, and nickel has been studied from simulated crud solution in nitrate medium using a novel hydrophobic menthol‐decanoic acid‐based deep eutectic solvent. Process parameters such as pH, DES concentration and shaking time were considered as input variables, and concentration of Fe, Co, and Ni as response variables for the design of experiments. Response surface methodology via Box‐Behnken design using polynomial quadratic model was selected for optimization of solvent extraction experiments. A total of 17 runs were conducted and the results were used for optimization purpose. Complete separation of Co/Fe and Co/Ni is achievable under various extraction conditions. As per the BBD analysis, the optimization conditions obtained were pH=1.9, [DES]=2.99 mol/L and shaking duration=18.27 min. Under these conditions,the amount of Fe, Co and Ni extracted were found as 32.29 g/L, 0.2111 g/L, and 19.83 g/L, respectively.

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Section: Chemicals and Instruments Usedmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Process Optimization Using Box‐Behnken Design for the Solvent Extraction and Separation of Iron, Cobalt, and Nickel from Simulated Crud Solution

Panda,

Mishra

2024

ChemistrySelect

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“…The viscosity of this type of DES at 50 °C was 36 cP, which was comparable to many common organic solvents. There is an interesting study [133] describing to the comprehensive recovery of waste SmCo magnets with the help of hydrophobic DESs based on dodecanol (Dodec), tri-noctylphosphine oxide (TOPO), and decanoic acid (DA):lauric acid (LA) (2:1). The first two DESs was used to selectively extract Fe(III) and Sm(III) from the Sm-Co magnets leachate, and the third DES was used for Co and Cu separations.…”

Section: Variation Of Ionic Liquids: Deep Eutectic Solvents (Dess)mentioning

confidence: 99%

Application of Ionic Liquids for the Recycling and Recovery of Technologically Critical and Valuable Metals

2022

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Population growth has led to an increased demand for raw minerals and energy resources; however, their supply cannot easily be provided in the same proportions. Modern technologies contain materials that are becoming more finely intermixed because of the broadening palette of elements used, and this outcome creates certain limitations for recycling. The recovery and separation of individual elements, critical materials and valuable metals from complex systems requires complex energy-consuming solutions with many hazardous chemicals used. Significant pressure is brought to bear on the improvement of separation and recycling approaches by the need to balance sustainability, efficiency, and environmental impacts. Due to the increase in environmental consciousness in chemical research and industry, the challenge for a sustainable environment calls for clean procedures that avoid the use of harmful organic solvents. Ionic liquids, also known as molten salts and future solvents, are endowed with unique features that have already had a promising impact on cutting-edge science and technologies. This review aims to address the current challenges associated with the energy-efficient design, recovery, recycling, and separation of valuable metals employing ionic liquids.

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“…Hydrophobic DESs (HDESs) demonstrated promising results as extracting phases for the extraction and separation of metallic elements [209][210][211][212][213]. However, REE recovery has not been studied apart from a recent study showing the potential of HDES for recovery of waste SmCo magnets [214]. Also, non-ionic hydrophobic eutectics should be considered, as recent studies have proposed a hydrophobic eutectic solvent-based on TOPO as an extractant for liquid-liquid separation of uranyl nitrate from aqueous acid [215] or platinum group and transition metals in HCl media [216].…”

Section: Future Of Liquid-liquid Extractionmentioning

confidence: 99%

Recovery of Rare Earth Elements (REEs) Using Ionic Solvents

et al. 2021

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Rare earth elements (REEs) are becoming more and more significant as they play crucial roles in many advanced technologies. Therefore, the development of optimized processes for their recovery, whether from primary resources or from secondary sources, has become necessary, including recovery from mine tailings, recycling of end-of-life products and urban and industrial waste. Ionic solvents, including ionic liquids (ILs) and deep-eutectic solvents (DESs), have attracted much attention since they represent an alternative to conventional processes for metal recovery. These systems are used as reactive agents in leaching and extraction processes. The most significant studies reported in the last decade regarding the recovery of REEs are presented in this review.

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A cleaner strategy for comprehensive recovery of waste SmCo magnets based on deep eutectic solvents

Cited by 29 publications

References 46 publications

Process Optimization Using Box‐Behnken Design for the Solvent Extraction and Separation of Iron, Cobalt, and Nickel from Simulated Crud Solution

Process Optimization Using Box‐Behnken Design for the Solvent Extraction and Separation of Iron, Cobalt, and Nickel from Simulated Crud Solution

Application of Ionic Liquids for the Recycling and Recovery of Technologically Critical and Valuable Metals

Recovery of Rare Earth Elements (REEs) Using Ionic Solvents

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