Mechanism-driven moderate alkalinity release for efficient recovery of high-purity cobalt and nickel from spent lithium-ion batteries

Jia, Wenting; Sun, Baogang; Guo, Lin; Ning, Puqi; Cao, Hongbin

doi:10.1016/j.seppur.2023.123645

Cited by 5 publications

(3 citation statements)

References 35 publications

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“…18,19 Reducing raw ore mining by recovering valuable metals substantially alleviates environmental damage caused by mining and promotes ecological sustainability. 20–22 Researchers have discussed the current status and prospects of the recovery of spent LIBs. 23 Wu et al 24 thoroughly analyzed and evaluated the main sources of retired power batteries from the perspective of sustainable development; investigated the intrinsic relationship between the failure mechanism of rechargeable batteries and the recovery technologies of batteries; and comprehensively evaluated the echelon utilization, recovery, and regeneration, and sustainable development of batteries from four aspects, including economic feasibility, environmental impact, technology, and safety.…”

Section: Introductionmentioning

confidence: 99%

A systematic review of efficient recycling for the cathode materials of spent lithium-ion batteries: process intensification technologies beyond traditional methods

Men,

Feng,

Zhang

et al. 2024

Green Chem.

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Section: Introductionmentioning

confidence: 99%

A systematic review of efficient recycling for the cathode materials of spent lithium-ion batteries: process intensification technologies beyond traditional methods

Men,

Feng,

Zhang

et al. 2024

Green Chem.

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“…However, both wet reduction leaching and fire reduction leaching only transfer metals such as Co and Ni into solution, and subsequent separation is an inevitable step to achieve metal recovery. The main methods for separating Co and Ni from complicated leaching solutions include chemical precipitation, 21–23 ion exchange, 24 membrane separation, 25 electrodialysis, 26 and solvent extraction 27,28 . Solvent extraction is the most popular technique due to its short time consumption, low operating costs, high selectivity, and high product purity 29,30 .…”

Section: Introductionmentioning

confidence: 99%

“…The main methods for separating Co and Ni from complicated leaching solutions include chemical precipitation, [21][22][23] ion exchange, 24 membrane separation, 25 electrodialysis, 26 and solvent extraction. 27,28 Solvent extraction is the most popular technique due to its short time consumption, low operating costs, high selectivity, and high product purity. 29,30 Commonly used extractants for the separation of Co and Ni from sulfate media are mainly organophosphate extractants including D2EHPA (P204), [31][32][33] PC-88A (P507), [34][35][36] and Cyanex 272.…”

mentioning

confidence: 99%

Efficient separation and recovery of Co and Ni from ammonium sulfate roasting‐water leaching solutions of oceanic cobalt‐rich crusts by sulfide precipitation and P507–Cyanex 272 synergistic extraction

Ju,

Feng,

et al. 2024

Asia-Pacific J Chem Eng

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Oceanic cobalt‐rich crusts contain many valuable metals including Co, Ni, Cu, and Mn, of which Co and Ni are scarce metal resources on terrestrial land. Co, Ni, Cu, and Mn in cobalt‐rich crusts can be efficiently extracted by the ammonium sulfate roasting‐water leaching (ARWL) process, but separating and recovering Co and Ni from the leaching solution containing high concentrations of Mn is a challenging problem. In this study, a combination of sulfide precipitation and P507–Cyanex 272 synergistic extraction is proposed for the separation and recovery of Co and Ni from the ARWL solutions of oceanic cobalt‐rich crusts. Under the optimum sulfide precipitation conditions, Co and Ni were precipitated with 99.85% and 99.63% efficiency, respectively, while Mn was coprecipitated with only .79% efficiency. The Co–Ni mixed sulfides were dissolved by dilute sulfuric acid under oxidative conditions to obtain a solution containing 12.584 g/L Co, 11.012 g/L Ni, and a small amount of Mn. Subsequently, Co and Mn were extracted from this solution using P507–Cyanex 272 synergistic extraction, the single‐stage extraction efficiencies of Co and Mn were 95.76% and 99.73%, respectively, and the coextraction efficiency of Ni was 3.02%, under the conditions of a feed solution pH of 3.0, an extractant saponification degree of 70%, a total extractant concentration of 20% (P507 to Cyanex 272 ratio of 3:7), and an O/A ratio of 1.1:1. The results of the thermodynamic study showed that the reaction of Co extraction by this mixed extraction system was exothermic. Ni in the organic phase was washed with an H2SO4 concentration of .12 mol/L, followed by stripping of Co and Mn with an H2SO4 concentration of .6 mol/L. Mn in the stripping solution was removed by oxidative precipitation with (NH4)2S2O8, after which the Co3O4 product was obtained by precipitation with (NH4)2C2O4 and calcination. Similarly, NiC2O4·2H2O can be obtained from the raffinate by (NH4)2C2O4 precipitation. Finally, a flowsheet was developed for the separation and recovery of Co, Ni, Cu, and Mn from the ARWL solutions of oceanic cobalt‐rich crusts. The study provides a promising scheme for the recovery of various valuable metals from deep‐sea cobalt‐rich crusts or manganese nodules.

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Separation of trace amount of nickel from cobalt sulphate solutions using a synergistic solvent extraction system consisting of dinonylnaphthalene sulfonic acid (DNNSA) and decyl 4-picolinate (4PC)

Xiao,

Zeng,

et al. 2024

Hydrometallurgy

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Mechanism-driven moderate alkalinity release for efficient recovery of high-purity cobalt and nickel from spent lithium-ion batteries

Cited by 5 publications

References 35 publications

A systematic review of efficient recycling for the cathode materials of spent lithium-ion batteries: process intensification technologies beyond traditional methods

A systematic review of efficient recycling for the cathode materials of spent lithium-ion batteries: process intensification technologies beyond traditional methods

Efficient separation and recovery of Co and Ni from ammonium sulfate roasting‐water leaching solutions of oceanic cobalt‐rich crusts by sulfide precipitation and P507–Cyanex 272 synergistic extraction

Separation of trace amount of nickel from cobalt sulphate solutions using a synergistic solvent extraction system consisting of dinonylnaphthalene sulfonic acid (DNNSA) and decyl 4-picolinate (4PC)

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