دانلود کتاب تبدیل زباله های الکترونیکی به محصولات پایدار

Small electronic waste has been addressed in this chapter. With this, issues such as consumption and generation, composition and recycling techniques were raised. The equipment/waste addressed were cell phones and smartphones, LED lamps, computers, and electrical wires and cables, which were chosen due to their great generation, for being more current technologies, their great applicability and quantity, and variety of valuable and critical materials in their compositions. All this waste shows a notable quantity and variety of precious and technological metals, and of rare-earth elements, all metals of great interest and research today. All except electrical wires and cables show considerable portions of gold, for example, which is a precious metal of great applicability, and which has been achieving high yield values, being, with this, one of the metals most studied by researchers. On the other hand, electrical wires and cables are waste, which is present in almost every WEEE, and are rich in copper and PVC, which are materials of great use in the most diverse areas. In any case, there is a need for the development of viable techniques of recovery of these metals, as well as the development of viable industrial processes. Impor-tant steps, such as disassembly and mechanical processing, should be developed, as they enable better revenues, in addition to the development of more sustainable and productive recovery procedures. As well as the development of designs that aim to facilitate the end of life of these products, seeking to meet the precepts of the tripod of sustainability, industrial ecology, and, more recently, the circular economy strategy, where all materials, not only metals, of this waste are recovered, valued, and recycled.