Optimization of Selective Hydrometallurgical Tantalum Recovery from E-Waste Using Zeolites.

ABSTRACT: To protect future high-tech metal demand, a selective and efficient recovery method for tantalum from a tantalum-rich e-waste component sample was developed. Ultrasound-assisted digestion of the component sample was optimized, and the highest dissolution rate was achieved using a mixture of 8 mol/L H₂SO₄ and HF at a temperature of 60 °C. The determined amount of tantalum was as high as 11 000 ± 1000 mg/kg, which results in a high potential for recyclable tantalum. The other major elements of this complex e-waste fraction were silicon, iron, aluminum, and tin. Efficient recovery of tantalum from the leachate was performed using the zeolite material ZSM-5. Extremely high selectivity and a recovery rate of over 98% were obtained. In terms of adsorption efficiency, select

SUBMITTER: Koskinen J 

PROVIDER: S-EPMC10993384 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature