The BRISA process as a path for efficient copper recovery from waste PCBs

Iglesias‐González, Nieves; Carranza, Francisco; Mazuelos, Alfonso; Romero, R.; Lorenzo-Tallafigo, Juan; Romero-García, Aurora; Ramírez, Pablo

doi:10.1016/j.hydromet.2021.105750

Cited by 7 publications

(1 citation statement)

References 24 publications

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“…Copper has been widely applied in electrical engineering and electronic fields, especially in printed circuit board devices; , thus, the consumption of copper around the world is huge, and the market share in China accounts for more than 50% of this figure. Furthermore, with the depletion of resources and the increase of mining costs, it is important to explore the reuse of recycled copper goods, especially from industrial waste. , Recycling copper from waste will reduce pollution, so it is conducive to carbon neutrality and development of green and sustainable industries.…”

Section: Introductionmentioning

confidence: 99%

Copper Recovery from Industrial Bimetallic Composite Ionic Liquids by Direct Electrodeposition and the Effect of Temperature and Ultrasound

et al. 2023

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Critical processing protocols of industrial bimetallic composite ionic liquid (IL) are necessary to assure good mass transfer rates for process optimization and efficient metal recovery. Here, the effects of different conditions on the electrochemical behavior and copper recovery from the industrial bimetallic composite IL are crucial for effective resource utilization. Cyclic voltammetry (CV) shows that the reduction of Cu(I) to Cu(0) during the cathodic reduction region is the irreversible diffusion-controlled process, and the diffusion coefficient increased with temperature which indicated that increasing temperature could promote the diffusion and mass transfer. During electrodeposition, metallic copper is obtained exclusively on the cathode, while CuCl2 accumulates exclusively on the anode. Scanning electron microscopy shows that the micron-size electrodeposits become larger and significantly rougher with increasing temperature and ultrasonic frequency, illustrating that these factors hasten the nucleation and crystallization rates at high overpotentials. The efficiency of copper recovery is greatly improved by employing high temperature and ultrasonic cavitation, and the highest values correspond to r = 76.9% at 80 °C and r = 63.6% at 40 kHz. The study lays the foundation for efficient and rapid recovery of copper from spent ILs.

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