Waste remediation: Low-temperature synthesis of hybrid Cu(OH)/CuO and CuO nanostructures from spent printed circuit boards and their dye degradation studies.

The demand for environmentally friendly and sustainable resource utilization techniques for recycling waste printed circuit boards is significant due to their status as valuable secondary resources, containing high-purity copper and precious metals. In this context, Cu(OH)/CuO and CuO nanostructures were fabricated using alkaline precipitation and low-temperature aging methods using the strip solution originated from laboratory-scale spent mobile phone printed circuit board recovery process. XRD, FTIR, FESEM-EDX, and TEM were utilized to characterize the as-recovered nanoproducts.

Genesis of copper oxide nanoparticles from waste printed circuit boards and evaluation of their photocatalytic activity.

Discarded Printed Circuit Boards (PCBs) are one of the secondary resources of high-purity copper, and precious materials, which if disposed off inappropriately may present several environmental risks. This study focuses on the production of copper oxide nanoparticles (CuO NPs) from reclaimed copper via a facile precipitation route to obtain a value-added nanoproduct. The synthesis involved the dissolution of downsized PCBs, leaching of Cu into the solution phase and the precipitation of nanoparticles (NPs) in an alkaline medium.

ZnO/CuO nanocomposites from recycled printed circuit board: preparation and photocatalytic properties.

Cost-effective recycling of e-waste (from computer printed circuit boards, PCB's) for the synthesis of metal oxide nanocomposites is demonstrated. Metals in electronic components of waste memory slots were leached out using nitric acid (HNO). Compositional analyses of the filtrate obtained after leaching were 66 wt.

Synthesis and characterization of tamarugite from aluminium dross: Part I.

Aluminium dross, which is otherwise a hazardous waste, can be used for the synthesis of Tamarugite. Since aluminium dross is a good source of aluminium, utilizing the aluminium dross for the generation of valuable products is a reliable method of recycling this industrial waste. The motivation of the present research is to jointly recycle aluminium dross and synthesize Tamarugite.