Sustainable regeneration of high-performance cathode materials from spent lithium-ion batteries through magnetic separation and coprecipitation

Ding, Wei; Bao, Shenxu; Zhang, Yimin; Xin, Chunfu; Chen, Bo; Li, Jia; Liu, Bo; Xia, Yifeng; Hou, Xiaochuan; Xu, Kaihua

doi:10.1016/j.jclepro.2024.140798

Cited by 16 publications

(2 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the kinetics of thiosulfate generation, the iodometric titration method was employed to test the concentration of thiosulfate in real time. 29,30 ■ RESULTS AND DISCUSSION Theoretical Basis of Self-Generated Thiosulfate. Thermodynamic Analysis of Self-Generated Thiosulfate.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Eco-Friendly and Low-Energy Innovative Scheme for Green Gold Extraction: Thermodynamics, Kinetics, and Application of Self-Generating Thiosulfate at Atmospheric Pressure

Ou,

Yang,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

The self-generation of thiosulfate from sulfurbearing minerals at atmospheric pressure can address its high consumption bottleneck. However, the stability factors, generation model of thiosulfate, and its systematic application in gold extraction are still elusive. Herein, it was elucidated that the adverse effects of temperature elevation on shortening the thermodynamic stability range of thiosulfate can be overcome by increasing the alkalinity of the solution. And the generation kinetics fitting results indicate that the oxidation process conforms to a shrinking core model under the control of surface chemical reactions (E a = 40.67 kJ/mol), which contributed to the precise regulation of the thiosulfate generation process. Further, a gold extraction rate of 86.02% was obtained by utilizing self-generated thiosulfate, and copper and gold were efficiently recovered from the desorbed pregnant solution (the desorption rates of copper and gold were 99.41% and 98.63%, respectively), demonstrating that self-generated thiosulfate can completely replace conventional chemically pure thiosulfate. This successful research has perfected the theoretical and technical framework for self-generating thiosulfate from sulfur-containing minerals, providing valuable insights and technical support for successfully applying this technology in refractory sulfide gold ore resources.

show abstract

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…The solid was digested with acid, and then the content of valuable elements was analyzed by an atomic absorption spectrometer (AAS). In the kinetics of thiosulfate generation, the iodometric titration method was employed to test the concentration of thiosulfate in real time. , …”

Section: Methodsmentioning

confidence: 99%