“…Another problem is that WEEE comprises a complex mix of different materials. WEEE can be composed of hazardous substances, such as lead, mercury, biphenyls, diphenyl ethers, brominated flame retardants, and other coolants, many of them with potential environmental impacts; however, WEEE also contains valuable substances, such as nonprecious metals (iron, steel, copper, aluminum, among others), precious metals (for instance, gold, silver, platinum, palladium), and plastics [3,14,15]. In Latin American countries, there are no WEEE management systems.…”